9110d2473d
* remotes/origin/tmp-81334f2: UPSTREAM: netfilter: nf_tables: remove busy mark and gc batch API UPSTREAM: netfilter: nft_set_hash: mark set element as dead when deleting from packet path UPSTREAM: netfilter: nf_tables: adapt set backend to use GC transaction API UPSTREAM: netfilter: nf_tables: GC transaction API to avoid race with control plane UPSTREAM: netfilter: nft_set_rbtree: fix overlap expiration walk UPSTREAM: netfilter: nft_set_rbtree: fix null deref on element insertion UPSTREAM: netfilter: nft_set_rbtree: Switch to node list walk for overlap detection UPSTREAM: netfilter: nf_tables: drop map element references from preparation phase UPSTREAM: netfilter: nftables: rename set element data activation/deactivation functions ANDROID: ABI: Update allowed list for QCOM BACKPORT: ALSA: compress: Allow pause and resume during draining UPSTREAM: netfilter: nf_tables: pass context to nft_set_destroy() UPSTREAM: netfilter: nf_tables: don't skip expired elements during walk ANDROID: GKI: db845c: Update symbols list and ABI on rpmsg_register_device_override ANDROID: Use GKI Dr. No OWNERS file ANDROID: Remove android/OWNERs file FROMGIT: Input: uinput - allow injecting event times ANDROID: fix up rpmsg_device ABI break ANDROID: fix up platform_device ABI break UPSTREAM: rpmsg: Fix possible refcount leak in rpmsg_register_device_override() UPSTREAM: rpmsg: glink: Release driver_override BACKPORT: rpmsg: Fix calling device_lock() on non-initialized device BACKPORT: rpmsg: Fix kfree() of static memory on setting driver_override UPSTREAM: rpmsg: Constify local variable in field store macro UPSTREAM: driver: platform: Add helper for safer setting of driver_override Revert "perf: Disallow mis-matched inherited group reads" Revert "xfrm: fix a data-race in xfrm_gen_index()" Revert "Bluetooth: hci_core: Fix build warnings" Revert "xfrm: interface: use DEV_STATS_INC()" Revert "netfilter: conntrack: allow sctp hearbeat after connection re-use" Revert "netfilter: conntrack: don't refresh sctp entries in closed state" Revert "netfilter: handle the connecting collision properly in nf_conntrack_proto_sctp" Reapply "netfilter: conntrack: don't refresh sctp entries in closed state" Reapply "netfilter: conntrack: allow sctp hearbeat after connection re-use" Linux 5.4.259 xfrm6: fix inet6_dev refcount underflow problem Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name Bluetooth: hci_sock: fix slab oob read in create_monitor_event phy: mapphone-mdm6600: Fix pinctrl_pm handling for sleep pins phy: mapphone-mdm6600: Fix runtime PM for remove phy: mapphone-mdm6600: Fix runtime disable on probe ASoC: pxa: fix a memory leak in probe() gpio: vf610: set value before the direction to avoid a glitch s390/pci: fix iommu bitmap allocation perf: Disallow mis-matched inherited group reads USB: serial: option: add Fibocom to DELL custom modem FM101R-GL USB: serial: option: add entry for Sierra EM9191 with new firmware USB: serial: option: add Telit LE910C4-WWX 0x1035 composition ACPI: irq: Fix incorrect return value in acpi_register_gsi() Revert "pinctrl: avoid unsafe code pattern in find_pinctrl()" mmc: core: Capture correct oemid-bits for eMMC cards mmc: core: sdio: hold retuning if sdio in 1-bit mode mtd: physmap-core: Restore map_rom fallback mtd: spinand: micron: correct bitmask for ecc status mtd: rawnand: qcom: Unmap the right resource upon probe failure Bluetooth: hci_event: Fix using memcmp when comparing keys HID: multitouch: Add required quirk for Synaptics 0xcd7e device btrfs: fix some -Wmaybe-uninitialized warnings in ioctl.c drm: panel-orientation-quirks: Add quirk for One Mix 2S sky2: Make sure there is at least one frag_addr available regulator/core: Revert "fix kobject release warning and memory leak in regulator_register()" wifi: cfg80211: avoid leaking stack data into trace wifi: mac80211: allow transmitting EAPOL frames with tainted key Bluetooth: hci_core: Fix build warnings Bluetooth: Avoid redundant authentication HID: holtek: fix slab-out-of-bounds Write in holtek_kbd_input_event tracing: relax trace_event_eval_update() execution with cond_resched() ata: libata-eh: Fix compilation warning in ata_eh_link_report() gpio: timberdale: Fix potential deadlock on &tgpio->lock overlayfs: set ctime when setting mtime and atime i2c: mux: Avoid potential false error message in i2c_mux_add_adapter btrfs: initialize start_slot in btrfs_log_prealloc_extents btrfs: return -EUCLEAN for delayed tree ref with a ref count not equals to 1 ARM: dts: ti: omap: Fix noisy serial with overrun-throttle-ms for mapphone ACPI: resource: Skip IRQ override on ASUS ExpertBook B1402CBA ACPI: resource: Skip IRQ override on ASUS ExpertBook B1502CBA ACPI: resource: Skip IRQ override on Asus Expertbook B2402CBA ACPI: resource: Add Asus ExpertBook B2502 to Asus quirks ACPI: resource: Skip IRQ override on Asus Vivobook S5602ZA ACPI: resource: Add ASUS model S5402ZA to quirks ACPI: resource: Skip IRQ override on Asus Vivobook K3402ZA/K3502ZA ACPI: resources: Add DMI-based legacy IRQ override quirk ACPI: Drop acpi_dev_irqresource_disabled() resource: Add irqresource_disabled() net: pktgen: Fix interface flags printing netfilter: nft_set_rbtree: .deactivate fails if element has expired neighbor: tracing: Move pin6 inside CONFIG_IPV6=y section net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve i40e: prevent crash on probe if hw registers have invalid values net: usb: smsc95xx: Fix an error code in smsc95xx_reset() ipv4: fib: annotate races around nh->nh_saddr_genid and nh->nh_saddr tun: prevent negative ifindex tcp: tsq: relax tcp_small_queue_check() when rtx queue contains a single skb tcp: fix excessive TLP and RACK timeouts from HZ rounding net: rfkill: gpio: prevent value glitch during probe net: ipv6: fix return value check in esp_remove_trailer net: ipv4: fix return value check in esp_remove_trailer xfrm: interface: use DEV_STATS_INC() xfrm: fix a data-race in xfrm_gen_index() qed: fix LL2 RX buffer allocation netfilter: nft_payload: fix wrong mac header matching KVM: x86: Mask LVTPC when handling a PMI regmap: fix NULL deref on lookup nfc: nci: fix possible NULL pointer dereference in send_acknowledge() ice: fix over-shifted variable Bluetooth: avoid memcmp() out of bounds warning Bluetooth: hci_event: Fix coding style Bluetooth: vhci: Fix race when opening vhci device Bluetooth: Fix a refcnt underflow problem for hci_conn Bluetooth: Reject connection with the device which has same BD_ADDR Bluetooth: hci_event: Ignore NULL link key usb: hub: Guard against accesses to uninitialized BOS descriptors Documentation: sysctl: align cells in second content column dev_forward_skb: do not scrub skb mark within the same name space ravb: Fix use-after-free issue in ravb_tx_timeout_work() powerpc/64e: Fix wrong test in __ptep_test_and_clear_young() powerpc/8xx: Fix pte_access_permitted() for PAGE_NONE dmaengine: mediatek: Fix deadlock caused by synchronize_irq() x86/cpu: Fix AMD erratum #1485 on Zen4-based CPUs usb: gadget: ncm: Handle decoding of multiple NTB's in unwrap call usb: gadget: udc-xilinx: replace memcpy with memcpy_toio pinctrl: avoid unsafe code pattern in find_pinctrl() cgroup: Remove duplicates in cgroup v1 tasks file Input: xpad - add PXN V900 support Input: psmouse - fix fast_reconnect function for PS/2 mode Input: powermate - fix use-after-free in powermate_config_complete ceph: fix incorrect revoked caps assert in ceph_fill_file_size() libceph: use kernel_connect() mcb: remove is_added flag from mcb_device struct iio: pressure: ms5611: ms5611_prom_is_valid false negative bug iio: pressure: dps310: Adjust Timeout Settings iio: pressure: bmp280: Fix NULL pointer exception usb: musb: Modify the "HWVers" register address usb: musb: Get the musb_qh poniter after musb_giveback usb: dwc3: Soft reset phy on probe for host net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read usb: xhci: xhci-ring: Use sysdev for mapping bounce buffer dmaengine: stm32-mdma: abort resume if no ongoing transfer workqueue: Override implicit ordered attribute in workqueue_apply_unbound_cpumask() nfc: nci: assert requested protocol is valid net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn() ixgbe: fix crash with empty VF macvlan list drm/vmwgfx: fix typo of sizeof argument xen-netback: use default TX queue size for vifs mlxsw: fix mlxsw_sp2_nve_vxlan_learning_set() return type ieee802154: ca8210: Fix a potential UAF in ca8210_probe ravb: Fix up dma_free_coherent() call in ravb_remove() drm/msm/dsi: skip the wait for video mode done if not applicable drm: etvnaviv: fix bad backport leading to warning net: prevent address rewrite in kernel_bind() quota: Fix slow quotaoff HID: logitech-hidpp: Fix kernel crash on receiver USB disconnect pwm: hibvt: Explicitly set .polarity in .get_state() lib/test_meminit: fix off-by-one error in test_pages() RDMA/cxgb4: Check skb value for failure to allocate Reapply "ANDROID: Revert "tracing/ring-buffer: Have polling block on watermark"" Revert "ring-buffer: Update "shortest_full" in polling" Revert "ANDROID: Revert "tracing/ring-buffer: Have polling block on watermark"" Revert "net: bridge: use DEV_STATS_INC()" FROMLIST: lib/test_meminit: fix off-by-one error in test_pages() Linux 5.4.258 xen/events: replace evtchn_rwlock with RCU ima: rework CONFIG_IMA dependency block NFS: Fix a race in __nfs_list_for_each_server() parisc: Restore __ldcw_align for PA-RISC 2.0 processors RDMA/mlx5: Fix NULL string error RDMA/siw: Fix connection failure handling RDMA/uverbs: Fix typo of sizeof argument RDMA/cma: Fix truncation compilation warning in make_cma_ports gpio: pxa: disable pinctrl calls for MMP_GPIO gpio: aspeed: fix the GPIO number passed to pinctrl_gpio_set_config() IB/mlx4: Fix the size of a buffer in add_port_entries() RDMA/core: Require admin capabilities to set system parameters cpupower: add Makefile dependencies for install targets sctp: update hb timer immediately after users change hb_interval sctp: update transport state when processing a dupcook packet tcp: fix delayed ACKs for MSS boundary condition tcp: fix quick-ack counting to count actual ACKs of new data net: stmmac: dwmac-stm32: fix resume on STM32 MCU netfilter: handle the connecting collision properly in nf_conntrack_proto_sctp net: nfc: llcp: Add lock when modifying device list net: usb: smsc75xx: Fix uninit-value access in __smsc75xx_read_reg net: dsa: mv88e6xxx: Avoid EEPROM timeout when EEPROM is absent ipv4, ipv6: Fix handling of transhdrlen in __ip{,6}_append_data() net: fix possible store tearing in neigh_periodic_work() modpost: add missing else to the "of" check NFSv4: Fix a nfs4_state_manager() race NFS: Add a helper nfs_client_for_each_server() NFS4: Trace state recovery operation wifi: mt76: mt76x02: fix MT76x0 external LNA gain handling wifi: mwifiex: Fix tlv_buf_left calculation scsi: target: core: Fix deadlock due to recursive locking drivers/net: process the result of hdlc_open() and add call of hdlc_close() in uhdlc_close() qed/red_ll2: Fix undefined behavior bug in struct qed_ll2_info ima: Finish deprecation of IMA_TRUSTED_KEYRING Kconfig wifi: mwifiex: Fix oob check condition in mwifiex_process_rx_packet regmap: rbtree: Fix wrong register marked as in-cache when creating new node wifi: iwlwifi: dbg_ini: fix structure packing ubi: Refuse attaching if mtd's erasesize is 0 net: prevent rewrite of msg_name in sock_sendmsg() net: replace calls to sock->ops->connect() with kernel_connect() fs: binfmt_elf_efpic: fix personality for ELF-FDPIC scsi: zfcp: Fix a double put in zfcp_port_enqueue() ata: libata-sata: increase PMP SRST timeout to 10s Revert "PCI: qcom: Disable write access to read only registers for IP v2.3.3" ata: libata-core: Do not register PM operations for SAS ports rbd: take header_rwsem in rbd_dev_refresh() only when updating ata: libata-core: Fix port and device removal rbd: decouple parent info read-in from updating rbd_dev ata: libata-core: Fix ata_port_request_pm() locking rbd: decouple header read-in from updating rbd_dev->header rbd: move rbd_dev_refresh() definition ring-buffer: Update "shortest_full" in polling i2c: i801: unregister tco_pdev in i801_probe() error path net: thunderbolt: Fix TCPv6 GSO checksum calculation ata: libata-scsi: ignore reserved bits for REPORT SUPPORTED OPERATION CODES btrfs: properly report 0 avail for very full file systems ALSA: hda: Disable power save for solving pop issue on Lenovo ThinkCentre M70q nilfs2: fix potential use after free in nilfs_gccache_submit_read_data() serial: 8250_port: Check IRQ data before use Smack:- Use overlay inode label in smack_inode_copy_up() smack: Retrieve transmuting information in smack_inode_getsecurity() smack: Record transmuting in smk_transmuted i40e: fix return of uninitialized aq_ret in i40e_set_vsi_promisc i40e: always propagate error value in i40e_set_vsi_promisc() ring-buffer: Avoid softlockup in ring_buffer_resize() selftests/ftrace: Correctly enable event in instance-event.tc i40e: improve locking of mac_filter_hash watchdog: iTCO_wdt: Set NO_REBOOT if the watchdog is not already running watchdog: iTCO_wdt: No need to stop the timer in probe nvme-pci: do not set the NUMA node of device if it has none fbdev/sh7760fb: Depend on FB=y ncsi: Propagate carrier gain/loss events to the NCSI controller powerpc/watchpoints: Annotate atomic context in more places bpf: Clarify error expectations from bpf_clone_redirect spi: nxp-fspi: reset the FLSHxCR1 registers ata: libata-eh: do not clear ATA_PFLAG_EH_PENDING in ata_eh_reset() parisc: irq: Make irq_stack_union static to avoid sparse warning parisc: drivers: Fix sparse warning parisc: iosapic.c: Fix sparse warnings parisc: sba: Fix compile warning wrt list of SBA devices gpio: pmic-eic-sprd: Add can_sleep flag for PMIC EIC chip xtensa: boot/lib: fix function prototypes xtensa: boot: don't add include-dirs xtensa: iss/network: make functions static xtensa: add default definition for XCHAL_HAVE_DIV32 bus: ti-sysc: Fix SYSC_QUIRK_SWSUP_SIDLE_ACT handling for uart wake-up ARM: dts: ti: omap: motorola-mapphone: Fix abe_clkctrl warning on boot clk: tegra: fix error return case for recalc_rate scsi: qla2xxx: Fix deletion race condition MIPS: Alchemy: only build mmc support helpers if au1xmmc is enabled scsi: qla2xxx: Fix update_fcport for current_topology ata: libata: disallow dev-initiated LPM transitions to unsupported states Input: i8042 - add quirk for TUXEDO Gemini 17 Gen1/Clevo PD70PN drm/amd/display: prevent potential division by zero errors i2c: mux: demux-pinctrl: check the return value of devm_kstrdup() drm/amd/display: Fix LFC multiplier changing erratically gpio: tb10x: Fix an error handling path in tb10x_gpio_probe() drm/amd/display: Reinstate LFC optimization netfilter: ipset: Fix race between IPSET_CMD_CREATE and IPSET_CMD_SWAP net: rds: Fix possible NULL-pointer dereference team: fix null-ptr-deref when team device type is changed net: bridge: use DEV_STATS_INC() net: hns3: add 5ms delay before clear firmware reset irq source dccp: fix dccp_v4_err()/dccp_v6_err() again powerpc/perf/hv-24x7: Update domain value check ipv4: fix null-deref in ipv4_link_failure i40e: Fix VF VLAN offloading when port VLAN is configured i40e: Fix warning message and call stack during rmmod i40e driver i40e: Remove scheduling while atomic possibility i40e: Fix for persistent lldp support ASoC: imx-audmix: Fix return error with devm_clk_get() selftests: tls: swap the TX and RX sockets in some tests ASoC: meson: spdifin: start hw on dai probe selftests/tls: Add {} to avoid static checker warning ext4: do not let fstrim block system suspend bpf: Avoid deadlock when using queue and stack maps from NMI ext4: move setting of trimmed bit into ext4_try_to_trim_range() netfilter: nf_tables: disallow element removal on anonymous sets ext4: replace the traditional ternary conditional operator with with max()/min() ext4: mark group as trimmed only if it was fully scanned ext4: change s_last_trim_minblks type to unsigned long ext4: scope ret locally in ext4_try_to_trim_range() ext4: add new helper interface ext4_try_to_trim_range() ext4: remove the 'group' parameter of ext4_trim_extent ata: libahci: clear pending interrupt status tracing: Increase trace array ref count on enable and filter files SUNRPC: Mark the cred for revalidation if the server rejects it NFS/pNFS: Report EINVAL errors from connect() to the server Revert "drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01" Revert "usb: typec: bus: verify partner exists in typec_altmode_attention" Revert "fs/nls: make load_nls() take a const parameter" Revert "ip_tunnels: use DEV_STATS_INC()" Linux 5.4.257 net/sched: Retire rsvp classifier drm/amdgpu: fix amdgpu_cs_p1_user_fence mtd: rawnand: brcmnand: Fix ECC level field setting for v7.2 controller ext4: fix rec_len verify error scsi: megaraid_sas: Fix deadlock on firmware crashdump i2c: aspeed: Reset the i2c controller when timeout occurs tracefs: Add missing lockdown check to tracefs_create_dir() nfsd: fix change_info in NFSv4 RENAME replies tracing: Have option files inc the trace array ref count tracing: Have current_trace inc the trace array ref count btrfs: fix lockdep splat and potential deadlock after failure running delayed items attr: block mode changes of symlinks md/raid1: fix error: ISO C90 forbids mixed declarations selftests: tracing: Fix to unmount tracefs for recovering environment btrfs: compare the correct fsid/metadata_uuid in btrfs_validate_super btrfs: add a helper to read the superblock metadata_uuid btrfs: move btrfs_pinned_by_swapfile prototype into volumes.h perf tools: Add an option to build without libbfd perf jevents: Make build dependency on test JSONs tools features: Add feature test to check if libbfd has buildid support kobject: Add sanity check for kset->kobj.ktype in kset_register() media: pci: ipu3-cio2: Initialise timing struct to avoid a compiler warning serial: cpm_uart: Avoid suspicious locking scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() usb: gadget: fsl_qe_udc: validate endpoint index for ch9 udc media: pci: cx23885: replace BUG with error return media: tuners: qt1010: replace BUG_ON with a regular error media: az6007: Fix null-ptr-deref in az6007_i2c_xfer() media: anysee: fix null-ptr-deref in anysee_master_xfer media: af9005: Fix null-ptr-deref in af9005_i2c_xfer media: dw2102: Fix null-ptr-deref in dw2102_i2c_transfer() media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer powerpc/pseries: fix possible memory leak in ibmebus_bus_init() jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount fs/jfs: prevent double-free in dbUnmount() after failed jfs_remount() ext2: fix datatype of block number in ext2_xattr_set2() md: raid1: fix potential OOB in raid1_remove_disk() bus: ti-sysc: Configure uart quirks for k3 SoC drm/exynos: fix a possible null-pointer dereference due to data race in exynos_drm_crtc_atomic_disable() wifi: mac80211_hwsim: drop short frames alx: fix OOB-read compiler warning mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450 tpm_tis: Resend command to recover from data transfer errors crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() wifi: mwifiex: fix fortify warning wifi: ath9k: fix printk specifier devlink: remove reload failed checks in params get/set callbacks hw_breakpoint: fix single-stepping when using bpf_overflow_handler perf/smmuv3: Enable HiSilicon Erratum 162001900 quirk for HIP08/09 ACPI: video: Add backlight=native DMI quirk for Lenovo Ideapad Z470 kernel/fork: beware of __put_task_struct() calling context ACPICA: Add AML_NO_OPERAND_RESOLVE flag to Timer locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock btrfs: output extra debug info if we failed to find an inline backref autofs: fix memory leak of waitqueues in autofs_catatonic_mode parisc: Drop loops_per_jiffy from per_cpu struct drm/amd/display: Fix a bug when searching for insert_above_mpcc kcm: Fix error handling for SOCK_DGRAM in kcm_sendmsg(). ixgbe: fix timestamp configuration code net/tls: do not free tls_rec on async operation in bpf_exec_tx_verdict() platform/mellanox: mlxbf-tmfifo: Drop jumbo frames mlxbf-tmfifo: sparse tags for config access platform/mellanox: mlxbf-tmfifo: Drop the Rx packet if no more descriptors kcm: Fix memory leak in error path of kcm_sendmsg() r8152: check budget for r8152_poll() net: ethernet: mtk_eth_soc: fix possible NULL pointer dereference in mtk_hwlro_get_fdir_all() net: ethernet: mvpp2_main: fix possible OOB write in mvpp2_ethtool_get_rxnfc() net: ipv4: fix one memleak in __inet_del_ifa() clk: imx8mm: Move 1443X/1416X PLL clock structure to common place ARM: dts: BCM5301X: Extend RAM to full 256MB for Linksys EA6500 V2 usb: typec: bus: verify partner exists in typec_altmode_attention usb: typec: tcpm: Refactor tcpm_handle_vdm_request usb: typec: tcpm: Refactor tcpm_handle_vdm_request payload handling perf tools: Handle old data in PERF_RECORD_ATTR perf hists browser: Fix hierarchy mode header mtd: rawnand: brcmnand: Fix potential false time out warning mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write mtd: rawnand: brcmnand: Fix crash during the panic_write btrfs: use the correct superblock to compare fsid in btrfs_validate_super btrfs: don't start transaction when joining with TRANS_JOIN_NOSTART fuse: nlookup missing decrement in fuse_direntplus_link ata: pata_ftide010: Add missing MODULE_DESCRIPTION ata: sata_gemini: Add missing MODULE_DESCRIPTION sh: boards: Fix CEU buffer size passed to dma_declare_coherent_memory() net: hns3: fix the port information display when sfp is absent netfilter: nfnetlink_osf: avoid OOB read ip_tunnels: use DEV_STATS_INC() idr: fix param name in idr_alloc_cyclic() doc s390/zcrypt: don't leak memory if dev_set_name() fails igb: Change IGB_MIN to allow set rx/tx value between 64 and 80 igbvf: Change IGBVF_MIN to allow set rx/tx value between 64 and 80 igc: Change IGC_MIN to allow set rx/tx value between 64 and 80 kcm: Destroy mutex in kcm_exit_net() net: sched: sch_qfq: Fix UAF in qfq_dequeue() af_unix: Fix data race around sk->sk_err. af_unix: Fix data-races around sk->sk_shutdown. af_unix: Fix data-race around unix_tot_inflight. af_unix: Fix data-races around user->unix_inflight. net: ipv6/addrconf: avoid integer underflow in ipv6_create_tempaddr veth: Fixing transmit return status for dropped packets igb: disable virtualization features on 82580 net: read sk->sk_family once in sk_mc_loop() ipv4: annotate data-races around fi->fib_dead sctp: annotate data-races around sk->sk_wmem_queued pwm: lpc32xx: Remove handling of PWM channels watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load perf top: Don't pass an ERR_PTR() directly to perf_session__delete() x86/virt: Drop unnecessary check on extended CPUID level in cpu_has_svm() perf annotate bpf: Don't enclose non-debug code with an assert() kconfig: fix possible buffer overflow NFSv4/pnfs: minor fix for cleanup path in nfs4_get_device_info soc: qcom: qmi_encdec: Restrict string length in decode clk: qcom: gcc-mdm9615: use proper parent for pll0_vote clock parisc: led: Reduce CPU overhead for disk & lan LED computation parisc: led: Fix LAN receive and transmit LEDs lib/test_meminit: allocate pages up to order MAX_ORDER drm/ast: Fix DRAM init on AST2200 fbdev/ep93xx-fb: Do not assign to struct fb_info.dev scsi: qla2xxx: Remove unsupported ql2xenabledif option scsi: qla2xxx: Turn off noisy message log scsi: qla2xxx: Fix erroneous link up failure scsi: qla2xxx: fix inconsistent TMF timeout net/ipv6: SKB symmetric hash should incorporate transport ports drm: fix double free for gbo in drm_gem_vram_init and drm_gem_vram_create udf: initialize newblock to 0 usb: typec: tcpci: clear the fault status bit serial: sc16is7xx: fix broken port 0 uart init sc16is7xx: Set iobase to device index cpufreq: brcmstb-avs-cpufreq: Fix -Warray-bounds bug crypto: stm32 - fix loop iterating through scatterlist for DMA s390/ipl: add missing secure/has_secure file to ipl type 'unknown' pstore/ram: Check start of empty przs during init fsverity: skip PKCS#7 parser when keyring is empty net: handle ARPHRD_PPP in dev_is_mac_header_xmit() X.509: if signature is unsupported skip validation dccp: Fix out of bounds access in DCCP error handler dlm: fix plock lookup when using multiple lockspaces parisc: Fix /proc/cpuinfo output for lscpu procfs: block chmod on /proc/thread-self/comm Revert "PCI: Mark NVIDIA T4 GPUs to avoid bus reset" ntb: Fix calculation ntb_transport_tx_free_entry() ntb: Clean up tx tail index on link down ntb: Drop packets when qp link is down media: dvb: symbol fixup for dvb_attach() xtensa: PMU: fix base address for the newer hardware backlight/lv5207lp: Compare against struct fb_info.device backlight/bd6107: Compare against struct fb_info.device backlight/gpio_backlight: Compare against struct fb_info.device ARM: OMAP2+: Fix -Warray-bounds warning in _pwrdm_state_switch() ipmi_si: fix a memleak in try_smi_init() ALSA: pcm: Fix missing fixup call in compat hw_refine ioctl PM / devfreq: Fix leak in devfreq_dev_release() igb: set max size RX buffer when store bad packet is enabled skbuff: skb_segment, Call zero copy functions before using skbuff frags netfilter: xt_sctp: validate the flag_info count netfilter: xt_u32: validate user space input netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c igmp: limit igmpv3_newpack() packet size to IP_MAX_MTU virtio_ring: fix avail_wrap_counter in virtqueue_add_packed cpufreq: Fix the race condition while updating the transition_task of policy dmaengine: ste_dma40: Add missing IRQ check in d40_probe um: Fix hostaudio build errors mtd: rawnand: fsmc: handle clk prepare error in fsmc_nand_resume() rpmsg: glink: Add check for kstrdup phy/rockchip: inno-hdmi: do not power on rk3328 post pll on reg write phy/rockchip: inno-hdmi: round fractal pixclock in rk3328 recalc_rate phy/rockchip: inno-hdmi: use correct vco_div_5 macro on rk3328 tracing: Fix race issue between cpu buffer write and swap x86/speculation: Mark all Skylake CPUs as vulnerable to GDS HID: multitouch: Correct devm device reference for hidinput input_dev name HID: logitech-dj: Fix error handling in logi_dj_recv_switch_to_dj_mode() RDMA/siw: Correct wrong debug message RDMA/siw: Balance the reference of cep->kref in the error path Revert "IB/isert: Fix incorrect release of isert connection" amba: bus: fix refcount leak serial: tegra: handle clk prepare error in tegra_uart_hw_init() scsi: fcoe: Fix potential deadlock on &fip->ctlr_lock scsi: core: Use 32-bit hostnum in scsi_host_lookup() media: ov2680: Fix regulators being left enabled on ov2680_power_on() errors media: ov2680: Fix vflip / hflip set functions media: ov2680: Fix ov2680_bayer_order() media: ov2680: Remove auto-gain and auto-exposure controls media: i2c: ov2680: Set V4L2_CTRL_FLAG_MODIFY_LAYOUT on flips media: ov5640: Enable MIPI interface in ov5640_set_power_mipi() media: i2c: ov5640: Configure HVP lines in s_power callback USB: gadget: f_mass_storage: Fix unused variable warning media: go7007: Remove redundant if statement iommu/vt-d: Fix to flush cache of PASID directory table IB/uverbs: Fix an potential error pointer dereference driver core: test_async: fix an error code dma-buf/sync_file: Fix docs syntax coresight: tmc: Explicit type conversions to prevent integer overflow scsi: qedf: Do not touch __user pointer in qedf_dbg_fp_int_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_debug_cmd_read() directly scsi: qedf: Do not touch __user pointer in qedf_dbg_stop_io_on_error_cmd_read() directly x86/APM: drop the duplicate APM_MINOR_DEV macro serial: sprd: Fix DMA buffer leak issue serial: sprd: Assign sprd_port after initialized to avoid wrong access serial: sprd: remove redundant sprd_port cleanup serial: sprd: getting port index via serial aliases only scsi: qla4xxx: Add length check when parsing nlattrs scsi: be2iscsi: Add length check when parsing nlattrs scsi: iscsi: Add strlen() check in iscsi_if_set{_host}_param() usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host() media: mediatek: vcodec: Return NULL if no vdec_fb is found media: cx24120: Add retval check for cx24120_message_send() media: dvb-usb: m920x: Fix a potential memory leak in m920x_i2c_xfer() media: dib7000p: Fix potential division by zero drivers: usb: smsusb: fix error handling code in smsusb_init_device media: v4l2-core: Fix a potential resource leak in v4l2_fwnode_parse_link() media: v4l2-fwnode: simplify v4l2_fwnode_parse_link media: v4l2-fwnode: fix v4l2_fwnode_parse_link handling NFS: Guard against READDIR loop when entry names exceed MAXNAMELEN NFSD: da_addr_body field missing in some GETDEVICEINFO replies fs: lockd: avoid possible wrong NULL parameter jfs: validate max amount of blocks before allocation. powerpc/iommu: Fix notifiers being shared by PCI and VIO buses nfs/blocklayout: Use the passed in gfp flags wifi: ath10k: Use RMW accessors for changing LNKCTL drm/radeon: Use RMW accessors for changing LNKCTL drm/radeon: Prefer pcie_capability_read_word() drm/radeon: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/radeon: Correct Transmit Margin masks drm/amdgpu: Use RMW accessors for changing LNKCTL drm/amdgpu: Prefer pcie_capability_read_word() drm/amdgpu: Replace numbers with PCI_EXP_LNKCTL2 definitions drm/amdgpu: Correct Transmit Margin masks PCI: Add #defines for Enter Compliance, Transmit Margin powerpc/fadump: reset dump area size if fadump memory reserve fails clk: imx: composite-8m: fix clock pauses when set_rate would be a no-op PCI/ASPM: Use RMW accessors for changing LNKCTL PCI: pciehp: Use RMW accessors for changing LNKCTL PCI: Mark NVIDIA T4 GPUs to avoid bus reset clk: sunxi-ng: Modify mismatched function name drivers: clk: keystone: Fix parameter judgment in _of_pll_clk_init() ipmi:ssif: Fix a memory leak when scanning for an adapter ipmi:ssif: Add check for kstrdup ALSA: ac97: Fix possible error value of *rac97 of: unittest: Fix overlay type in apply/revert check drm/mediatek: Fix potential memory leak if vmap() fail audit: fix possible soft lockup in __audit_inode_child() smackfs: Prevent underflow in smk_set_cipso() drm/msm/mdp5: Don't leak some plane state ima: Remove deprecated IMA_TRUSTED_KEYRING Kconfig drm/panel: simple: Add missing connector type and pixel format for AUO T215HVN01 drm/armada: Fix off-by-one error in armada_overlay_get_property() of: unittest: fix null pointer dereferencing in of_unittest_find_node_by_name() drm/tegra: dpaux: Fix incorrect return value of platform_get_irq drm/tegra: Remove superfluous error messages around platform_get_irq() md/md-bitmap: hold 'reconfig_mutex' in backlog_store() md/bitmap: don't set max_write_behind if there is no write mostly device drm/amdgpu: Update min() to min_t() in 'amdgpu_info_ioctl' arm64: dts: qcom: sdm845: Add missing RPMh power domain to GCC ARM: dts: BCM53573: Fix Ethernet info for Luxul devices drm: adv7511: Fix low refresh rate register for ADV7533/5 ARM: dts: samsung: s5pv210-smdkv210: correct ethernet reg addresses (split) ARM: dts: s5pv210: add dummy 5V regulator for backlight on SMDKv210 ARM: dts: s5pv210: correct ethernet unit address in SMDKV210 ARM: dts: s5pv210: use defines for IRQ flags in SMDKV210 ARM: dts: s5pv210: add RTC 32 KHz clock in SMDKV210 ARM: dts: samsung: s3c6410-mini6410: correct ethernet reg addresses (split) ARM: dts: s3c64xx: align pinctrl with dtschema ARM: dts: s3c6410: align node SROM bus node name with dtschema in Mini6410 ARM: dts: s3c6410: move fixed clocks under root node in Mini6410 drm/etnaviv: fix dumping of active MMU context ARM: dts: BCM53573: Use updated "spi-gpio" binding properties ARM: dts: BCM53573: Add cells sizes to PCIe node ARM: dts: BCM53573: Drop nonexistent "default-off" LED trigger drm/amdgpu: avoid integer overflow warning in amdgpu_device_resize_fb_bar() quota: fix dqput() to follow the guarantees dquot_srcu should provide quota: add new helper dquot_active() quota: rename dquot_active() to inode_quota_active() quota: factor out dquot_write_dquot() quota: avoid increasing DQST_LOOKUPS when iterating over dirty/inuse list drm/bridge: tc358764: Fix debug print parameter order netrom: Deny concurrent connect(). net/sched: sch_hfsc: Ensure inner classes have fsc curve mlxsw: i2c: Limit single transaction buffer size mlxsw: i2c: Fix chunk size setting in output mailbox buffer net: arcnet: Do not call kfree_skb() under local_irq_disable() wifi: ath9k: use IS_ERR() with debugfs_create_dir() wifi: mwifiex: avoid possible NULL skb pointer dereference wifi: ath9k: protect WMI command response buffer replacement with a lock wifi: ath9k: fix races between ath9k_wmi_cmd and ath9k_wmi_ctrl_rx wifi: mwifiex: Fix missed return in oob checks failed path wifi: mwifiex: fix memory leak in mwifiex_histogram_read() fs: ocfs2: namei: check return value of ocfs2_add_entry() lwt: Check LWTUNNEL_XMIT_CONTINUE strictly lwt: Fix return values of BPF xmit ops hwrng: iproc-rng200 - Implement suspend and resume calls hwrng: iproc-rng200 - use semicolons rather than commas to separate statements crypto: caam - fix unchecked return value error Bluetooth: nokia: fix value check in nokia_bluetooth_serdev_probe() crypto: stm32 - Properly handle pm_runtime_get failing wifi: mwifiex: fix error recovery in PCIE buffer descriptor management mwifiex: switch from 'pci_' to 'dma_' API wifi: mwifiex: Fix OOB and integer underflow when rx packets can: gs_usb: gs_usb_receive_bulk_callback(): count RX overflow errors also in case of OOM spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe() regmap: rbtree: Use alloc_flags for memory allocations tcp: tcp_enter_quickack_mode() should be static bpf: Clear the probe_addr for uprobe cpufreq: powernow-k8: Use related_cpus instead of cpus in driver.exit() perf/imx_ddr: don't enable counter0 if none of 4 counters are used x86/decompressor: Don't rely on upper 32 bits of GPRs being preserved x86/boot: Annotate local functions x86/asm: Make more symbols local OPP: Fix passing 0 to PTR_ERR in _opp_attach_genpd() tmpfs: verify {g,u}id mount options correctly fs: Fix error checking for d_hash_and_lookup() new helper: lookup_positive_unlocked() eventfd: prevent underflow for eventfd semaphores eventfd: Export eventfd_ctx_do_read() reiserfs: Check the return value from __getblk() Revert "net: macsec: preserve ingress frame ordering" udf: Handle error when adding extent to a file udf: Check consistency of Space Bitmap Descriptor powerpc/32s: Fix assembler warning about r0 net: Avoid address overwrite in kernel_connect platform/mellanox: Fix mlxbf-tmfifo not handling all virtio CONSOLE notifications ALSA: seq: oss: Fix racy open/close of MIDI devices scsi: storvsc: Always set no_report_opcodes cifs: add a warning when the in-flight count goes negative sctp: handle invalid error codes without calling BUG() bnx2x: fix page fault following EEH recovery netlabel: fix shift wrapping bug in netlbl_catmap_setlong() scsi: qedi: Fix potential deadlock on &qedi_percpu->p_work_lock idmaengine: make FSL_EDMA and INTEL_IDMA64 depends on HAS_IOMEM net: usb: qmi_wwan: add Quectel EM05GV2 clk: fixed-mmio: make COMMON_CLK_FIXED_MMIO depend on HAS_IOMEM security: keys: perform capable check only on privileged operations platform/x86: huawei-wmi: Silence ambient light sensor platform/x86: intel: hid: Always call BTNL ACPI method ASoC: atmel: Fix the 8K sample parameter in I2SC master ASoc: codecs: ES8316: Fix DMIC config fs/nls: make load_nls() take a const parameter s390/dasd: fix hanging device after request requeue s390/dasd: use correct number of retries for ERP requests m68k: Fix invalid .section syntax vxlan: generalize vxlan_parse_gpe_hdr and remove unused args ethernet: atheros: fix return value check in atl1c_tso_csum() ASoC: da7219: Check for failure reading AAD IRQ events ASoC: da7219: Flush pending AAD IRQ when suspending 9p: virtio: make sure 'offs' is initialized in zc_request pinctrl: amd: Don't show `Invalid config param` errors nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse nilfs2: fix general protection fault in nilfs_lookup_dirty_data_buffers() fsi: master-ast-cf: Add MODULE_FIRMWARE macro firmware: stratix10-svc: Fix an NULL vs IS_ERR() bug in probe serial: sc16is7xx: fix bug when first setting GPIO direction Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition staging: rtl8712: fix race condition HID: wacom: remove the battery when the EKR is off USB: serial: option: add FOXCONN T99W368/T99W373 product USB: serial: option: add Quectel EM05G variant (0x030e) modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules rtc: ds1685: use EXPORT_SYMBOL_GPL for ds1685_rtc_poweroff net: enetc: use EXPORT_SYMBOL_GPL for enetc_phc_index mmc: au1xmmc: force non-modular build and remove symbol_get usage ARM: pxa: remove use of symbol_get() erofs: ensure that the post-EOF tails are all zeroed Linux 5.4.256 Revert "MIPS: Alchemy: fix dbdma2" powerpc/pmac/smp: Drop unnecessary volatile qualifier powerpc/pmac/smp: Avoid unused-variable warnings Revert "drm/display/dp: Fix the DP DSC Receiver cap size" Revert "macsec: Fix traffic counters/statistics" Revert "macsec: use DEV_STATS_INC()" ANDROID: GKI: add back pm_runtime_get_if_in_use() Revert "interconnect: Add helpers for enabling/disabling a path" Revert "interconnect: Do not skip aggregation for disabled paths" Revert "ALSA: pcm: Set per-card upper limit of PCM buffer allocations" Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available" Revert "ALSA: pcm: Fix potential data race at PCM memory allocation helpers" Revert "ALSA: pcm: Fix build error on m68k and others" Revert "Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available"" Revert "ALSA: pcm: Check for null pointer of pointer substream before dereferencing it" Linux 5.4.255 dma-buf/sw_sync: Avoid recursive lock during fence signal pinctrl: renesas: rza2: Add lock around pinctrl_generic{{add,remove}_group,{add,remove}_function} clk: Fix undefined reference to `clk_rate_exclusive_{get,put}' scsi: core: raid_class: Remove raid_component_add() scsi: snic: Fix double free in snic_tgt_create() irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable Documentation/sysctl: document page_lock_unfairness ALSA: pcm: Check for null pointer of pointer substream before dereferencing it interconnect: Do not skip aggregation for disabled paths Revert "ALSA: pcm: Use SG-buffer only when direct DMA is available" ALSA: pcm: Fix build error on m68k and others rtnetlink: Reject negative ifindexes in RTM_NEWLINK mm: allow a controlled amount of unfairness in the page lock x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 drm/display/dp: Fix the DP DSC Receiver cap size PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus media: vcodec: Fix potential array out-of-bounds in encoder queue_setup radix tree: remove unused variable lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels batman-adv: Hold rtnl lock during MTU update via netlink batman-adv: Fix batadv_v_ogm_aggr_send memory leak batman-adv: Fix TT global entry leak when client roamed back batman-adv: Do not get eth header before batadv_check_management_packet batman-adv: Don't increase MTU when set by user batman-adv: Trigger events for auto adjusted MTU nfsd: Fix race to FREE_STATEID and cl_revoked clk: Fix slab-out-of-bounds error in devm_clk_release() NFSv4: Fix dropped lock for racing OPEN and delegation return ibmveth: Use dcbf rather than dcbfl bonding: fix macvlan over alb bond support net: remove bond_slave_has_mac_rcu() net/sched: fix a qdisc modification with ambiguous command request igb: Avoid starting unnecessary workqueues net: validate veth and vxcan peer ifindexes net: bcmgenet: Fix return value check for fixed_phy_register() net: bgmac: Fix return value check for fixed_phy_register() ipvlan: Fix a reference count leak warning in ipvlan_ns_exit() dccp: annotate data-races in dccp_poll() sock: annotate data-races around prot->memory_pressure octeontx2-af: SDP: fix receive link config tracing: Fix memleak due to race between current_tracer and trace drm/amd/display: check TG is non-null before checking if enabled drm/amd/display: do not wait for mpc idle if tg is disabled ASoC: fsl_sai: Disable bit clock with transmitter ASoC: fsl_sai: Add new added registers and new bit definition ASoC: fsl_sai: Refine enable/disable TE/RE sequence in trigger() regmap: Account for register length in SMBus I/O limits ALSA: pcm: Fix potential data race at PCM memory allocation helpers ALSA: pcm: Use SG-buffer only when direct DMA is available ALSA: pcm: Set per-card upper limit of PCM buffer allocations dm integrity: reduce vmalloc space footprint on 32-bit architectures dm integrity: increase RECALC_SECTORS to improve recalculate speed fbdev: fix potential OOB read in fast_imageblit() fbdev: Fix sys_imageblit() for arbitrary image widths fbdev: Improve performance of sys_imageblit() MIPS: cpu-features: Use boot_cpu_type for CPU type based features MIPS: cpu-features: Enable octeon_cache by cpu_type fs: dlm: fix mismatch of plock results from userspace fs: dlm: use dlm_plock_info for do_unlock_close fs: dlm: change plock interrupted message to debug again fs: dlm: add pid to debug log dlm: replace usage of found with dedicated list iterator variable dlm: improve plock logging if interrupted PCI: acpiphp: Reassign resources on bridge if necessary net: phy: broadcom: stub c45 read/write for 54810 mmc: f-sdh30: fix order of function calls in sdhci_f_sdh30_remove net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure net: fix the RTO timer retransmitting skb every 1ms if linear option is enabled virtio-net: set queues after driver_ok af_unix: Fix null-ptr-deref in unix_stream_sendpage(). netfilter: set default timeout to 3 secs for sctp shutdown send and recv state mmc: block: Fix in_flight[issue_type] value error mmc: wbsd: fix double mmc_free_host() in wbsd_init() cifs: Release folio lock on fscache read hit. ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces. serial: 8250: Fix oops for port->pm on uart_change_pm() ASoC: meson: axg-tdm-formatter: fix channel slot allocation ASoC: rt5665: add missed regulator_bulk_disable ARM: dts: imx: Set default tuning step for imx6sx usdhc ARM: dts: imx: Set default tuning step for imx7d usdhc ARM: dts: imx: Adjust dma-apbh node name ARM: dts: imx7s: Drop dma-apb interrupt-names bus: ti-sysc: Flush posted write on enable before reset bus: ti-sysc: Improve reset to work with modules with no sysconfig net: do not allow gso_size to be set to GSO_BY_FRAGS sock: Fix misuse of sk_under_memory_pressure() net: dsa: mv88e6xxx: Wait for EEPROM done before HW reset i40e: fix misleading debug logs team: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves netfilter: nft_dynset: disallow object maps ipvs: fix racy memcpy in proc_do_sync_threshold selftests: mirror_gre_changes: Tighten up the TTL test match xfrm: add NULL check in xfrm_update_ae_params ip_vti: fix potential slab-use-after-free in decode_session6 ip6_vti: fix slab-use-after-free in decode_session6 xfrm: fix slab-use-after-free in decode_session6 xfrm: interface: rename xfrm_interface.c to xfrm_interface_core.c net: af_key: fix sadb_x_filter validation net: xfrm: Fix xfrm_address_filter OOB read btrfs: fix BUG_ON condition in btrfs_cancel_balance tty: serial: fsl_lpuart: Clear the error flags by writing 1 for lpuart32 platforms powerpc/rtas_flash: allow user copy to flash block cache objects fbdev: mmp: fix value check in mmphw_probe() i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue virtio-mmio: don't break lifecycle of vm_dev virtio-mmio: Use to_virtio_mmio_device() to simply code virtio-mmio: convert to devm_platform_ioremap_resource nfsd: Remove incorrect check in nfsd4_validate_stateid nfsd4: kill warnings on testing stateids with mismatched clientids net/ncsi: Fix gma flag setting after response tracing/probes: Fix to update dynamic data counter if fetcharg uses it tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs leds: trigger: netdev: Recheck NETDEV_LED_MODE_LINKUP on dev rename mmc: sunxi: fix deferred probing mmc: bcm2835: fix deferred probing USB: dwc3: qcom: fix NULL-deref on suspend usb: dwc3: qcom: Add helper functions to enable,disable wake irqs interconnect: Add helpers for enabling/disabling a path interconnect: Move internal structs into a separate file irqchip/mips-gic: Use raw spinlock for gic_lock irqchip/mips-gic: Get rid of the reliance on irq_cpu_online() ALSA: hda: Fix unhandled register update during auto-suspend period PM: runtime: Add pm_runtime_get_if_active() PM-runtime: add tracepoints for usage_count changes iommu/amd: Fix "Guest Virtual APIC Table Root Pointer" configuration in IRTE iio: addac: stx104: Fix race condition when converting analog-to-digital iio: addac: stx104: Fix race condition for stx104_write_raw() iio: stx104: Move to addac subdirectory iio: adc: stx104: Implement and utilize register structures iio: adc: stx104: Utilize iomap interface iio: add addac subdirectory IMA: allow/fix UML builds powerpc/kasan: Disable KCOV in KASAN code ALSA: hda: fix a possible null-pointer dereference due to data race in snd_hdac_regmap_sync() ALSA: hda/realtek: Add quirks for Unis H3C Desktop B760 & Q760 drm/amdgpu: Fix potential fence use-after-free v2 Bluetooth: L2CAP: Fix use-after-free pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db() gfs2: Fix possible data races in gfs2_show_options() usb: chipidea: imx: don't request QoS for imx8ulp media: platform: mediatek: vpu: fix NULL ptr dereference media: v4l2-mem2mem: add lock to protect parameter num_rdy FS: JFS: Check for read-only mounted filesystem in txBegin FS: JFS: Fix null-ptr-deref Read in txBegin MIPS: dec: prom: Address -Warray-bounds warning fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev udf: Fix uninitialized array access for some pathnames ovl: check type and offset of struct vfsmount in ovl_entry HID: add quirk for 03f0:464a HP Elite Presenter Mouse quota: fix warning in dqgrab() quota: Properly disable quotas when add_dquot_ref() fails ALSA: emu10k1: roll up loops in DSP setup code for Audigy drm/radeon: Fix integer overflow in radeon_cs_parser_init macsec: use DEV_STATS_INC() macsec: Fix traffic counters/statistics selftests: forwarding: tc_flower: Relax success criterion mmc: sdhci-f-sdh30: Replace with sdhci_pltfm mmc: sdhci_f_sdh30: convert to devm_platform_ioremap_resource Conflict: drivers/devfreq/devfreq.c drivers/mmc/core/block.c drivers/rpmsg/qcom_glink_native.c include/net/tcp.h net/ipv4/tcp_input.c Change-Id: I9381be24d8fd353e56226698d20732fee74a03c3 Signed-off-by: kamasali Satyanarayan <quic_kamasali@quicinc.com>
2030 lines
68 KiB
C
2030 lines
68 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* device.h - generic, centralized driver model
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*
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* Copyright (c) 2001-2003 Patrick Mochel <mochel@osdl.org>
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* Copyright (c) 2004-2009 Greg Kroah-Hartman <gregkh@suse.de>
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* Copyright (c) 2008-2009 Novell Inc.
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*
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* See Documentation/driver-api/driver-model/ for more information.
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*/
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#ifndef _DEVICE_H_
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#define _DEVICE_H_
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#include <linux/ioport.h>
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#include <linux/kobject.h>
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#include <linux/klist.h>
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#include <linux/list.h>
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#include <linux/lockdep.h>
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/pm.h>
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#include <linux/atomic.h>
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#include <linux/ratelimit.h>
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#include <linux/uidgid.h>
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#include <linux/gfp.h>
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#include <linux/overflow.h>
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#include <linux/android_kabi.h>
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#include <asm/device.h>
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struct device;
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struct device_private;
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struct device_driver;
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struct driver_private;
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struct module;
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struct class;
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struct subsys_private;
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struct bus_type;
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struct device_node;
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struct fwnode_handle;
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struct iommu_ops;
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struct iommu_group;
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struct iommu_fwspec;
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struct dev_pin_info;
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struct iommu_param;
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struct bus_attribute {
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struct attribute attr;
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ssize_t (*show)(struct bus_type *bus, char *buf);
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ssize_t (*store)(struct bus_type *bus, const char *buf, size_t count);
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};
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#define BUS_ATTR_RW(_name) \
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struct bus_attribute bus_attr_##_name = __ATTR_RW(_name)
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#define BUS_ATTR_RO(_name) \
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struct bus_attribute bus_attr_##_name = __ATTR_RO(_name)
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#define BUS_ATTR_WO(_name) \
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struct bus_attribute bus_attr_##_name = __ATTR_WO(_name)
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extern int __must_check bus_create_file(struct bus_type *,
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struct bus_attribute *);
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extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
|
|
|
|
/**
|
|
* struct bus_type - The bus type of the device
|
|
*
|
|
* @name: The name of the bus.
|
|
* @dev_name: Used for subsystems to enumerate devices like ("foo%u", dev->id).
|
|
* @dev_root: Default device to use as the parent.
|
|
* @bus_groups: Default attributes of the bus.
|
|
* @dev_groups: Default attributes of the devices on the bus.
|
|
* @drv_groups: Default attributes of the device drivers on the bus.
|
|
* @match: Called, perhaps multiple times, whenever a new device or driver
|
|
* is added for this bus. It should return a positive value if the
|
|
* given device can be handled by the given driver and zero
|
|
* otherwise. It may also return error code if determining that
|
|
* the driver supports the device is not possible. In case of
|
|
* -EPROBE_DEFER it will queue the device for deferred probing.
|
|
* @uevent: Called when a device is added, removed, or a few other things
|
|
* that generate uevents to add the environment variables.
|
|
* @probe: Called when a new device or driver add to this bus, and callback
|
|
* the specific driver's probe to initial the matched device.
|
|
* @sync_state: Called to sync device state to software state after all the
|
|
* state tracking consumers linked to this device (present at
|
|
* the time of late_initcall) have successfully bound to a
|
|
* driver. If the device has no consumers, this function will
|
|
* be called at late_initcall_sync level. If the device has
|
|
* consumers that are never bound to a driver, this function
|
|
* will never get called until they do.
|
|
* @remove: Called when a device removed from this bus.
|
|
* @shutdown: Called at shut-down time to quiesce the device.
|
|
*
|
|
* @online: Called to put the device back online (after offlining it).
|
|
* @offline: Called to put the device offline for hot-removal. May fail.
|
|
*
|
|
* @suspend: Called when a device on this bus wants to go to sleep mode.
|
|
* @resume: Called to bring a device on this bus out of sleep mode.
|
|
* @num_vf: Called to find out how many virtual functions a device on this
|
|
* bus supports.
|
|
* @dma_configure: Called to setup DMA configuration on a device on
|
|
* this bus.
|
|
* @pm: Power management operations of this bus, callback the specific
|
|
* device driver's pm-ops.
|
|
* @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU
|
|
* driver implementations to a bus and allow the driver to do
|
|
* bus-specific setup
|
|
* @p: The private data of the driver core, only the driver core can
|
|
* touch this.
|
|
* @lock_key: Lock class key for use by the lock validator
|
|
* @need_parent_lock: When probing or removing a device on this bus, the
|
|
* device core should lock the device's parent.
|
|
*
|
|
* A bus is a channel between the processor and one or more devices. For the
|
|
* purposes of the device model, all devices are connected via a bus, even if
|
|
* it is an internal, virtual, "platform" bus. Buses can plug into each other.
|
|
* A USB controller is usually a PCI device, for example. The device model
|
|
* represents the actual connections between buses and the devices they control.
|
|
* A bus is represented by the bus_type structure. It contains the name, the
|
|
* default attributes, the bus' methods, PM operations, and the driver core's
|
|
* private data.
|
|
*/
|
|
struct bus_type {
|
|
const char *name;
|
|
const char *dev_name;
|
|
struct device *dev_root;
|
|
const struct attribute_group **bus_groups;
|
|
const struct attribute_group **dev_groups;
|
|
const struct attribute_group **drv_groups;
|
|
|
|
int (*match)(struct device *dev, struct device_driver *drv);
|
|
int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
|
|
int (*probe)(struct device *dev);
|
|
void (*sync_state)(struct device *dev);
|
|
int (*remove)(struct device *dev);
|
|
void (*shutdown)(struct device *dev);
|
|
|
|
int (*online)(struct device *dev);
|
|
int (*offline)(struct device *dev);
|
|
|
|
int (*suspend)(struct device *dev, pm_message_t state);
|
|
int (*resume)(struct device *dev);
|
|
|
|
int (*num_vf)(struct device *dev);
|
|
|
|
int (*dma_configure)(struct device *dev);
|
|
|
|
const struct dev_pm_ops *pm;
|
|
|
|
const struct iommu_ops *iommu_ops;
|
|
|
|
struct subsys_private *p;
|
|
struct lock_class_key lock_key;
|
|
|
|
bool need_parent_lock;
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
extern int __must_check bus_register(struct bus_type *bus);
|
|
|
|
extern void bus_unregister(struct bus_type *bus);
|
|
|
|
extern int __must_check bus_rescan_devices(struct bus_type *bus);
|
|
|
|
/* iterator helpers for buses */
|
|
struct subsys_dev_iter {
|
|
struct klist_iter ki;
|
|
const struct device_type *type;
|
|
};
|
|
void subsys_dev_iter_init(struct subsys_dev_iter *iter,
|
|
struct bus_type *subsys,
|
|
struct device *start,
|
|
const struct device_type *type);
|
|
struct device *subsys_dev_iter_next(struct subsys_dev_iter *iter);
|
|
void subsys_dev_iter_exit(struct subsys_dev_iter *iter);
|
|
|
|
int device_match_name(struct device *dev, const void *name);
|
|
int device_match_of_node(struct device *dev, const void *np);
|
|
int device_match_fwnode(struct device *dev, const void *fwnode);
|
|
int device_match_devt(struct device *dev, const void *pdevt);
|
|
int device_match_acpi_dev(struct device *dev, const void *adev);
|
|
int device_match_any(struct device *dev, const void *unused);
|
|
|
|
int bus_for_each_dev(struct bus_type *bus, struct device *start, void *data,
|
|
int (*fn)(struct device *dev, void *data));
|
|
struct device *bus_find_device(struct bus_type *bus, struct device *start,
|
|
const void *data,
|
|
int (*match)(struct device *dev, const void *data));
|
|
/**
|
|
* bus_find_device_by_name - device iterator for locating a particular device
|
|
* of a specific name.
|
|
* @bus: bus type
|
|
* @start: Device to begin with
|
|
* @name: name of the device to match
|
|
*/
|
|
static inline struct device *bus_find_device_by_name(struct bus_type *bus,
|
|
struct device *start,
|
|
const char *name)
|
|
{
|
|
return bus_find_device(bus, start, name, device_match_name);
|
|
}
|
|
|
|
/**
|
|
* bus_find_device_by_of_node : device iterator for locating a particular device
|
|
* matching the of_node.
|
|
* @bus: bus type
|
|
* @np: of_node of the device to match.
|
|
*/
|
|
static inline struct device *
|
|
bus_find_device_by_of_node(struct bus_type *bus, const struct device_node *np)
|
|
{
|
|
return bus_find_device(bus, NULL, np, device_match_of_node);
|
|
}
|
|
|
|
/**
|
|
* bus_find_device_by_fwnode : device iterator for locating a particular device
|
|
* matching the fwnode.
|
|
* @bus: bus type
|
|
* @fwnode: fwnode of the device to match.
|
|
*/
|
|
static inline struct device *
|
|
bus_find_device_by_fwnode(struct bus_type *bus, const struct fwnode_handle *fwnode)
|
|
{
|
|
return bus_find_device(bus, NULL, fwnode, device_match_fwnode);
|
|
}
|
|
|
|
/**
|
|
* bus_find_device_by_devt : device iterator for locating a particular device
|
|
* matching the device type.
|
|
* @bus: bus type
|
|
* @devt: device type of the device to match.
|
|
*/
|
|
static inline struct device *bus_find_device_by_devt(struct bus_type *bus,
|
|
dev_t devt)
|
|
{
|
|
return bus_find_device(bus, NULL, &devt, device_match_devt);
|
|
}
|
|
|
|
/**
|
|
* bus_find_next_device - Find the next device after a given device in a
|
|
* given bus.
|
|
* @bus: bus type
|
|
* @cur: device to begin the search with.
|
|
*/
|
|
static inline struct device *
|
|
bus_find_next_device(struct bus_type *bus,struct device *cur)
|
|
{
|
|
return bus_find_device(bus, cur, NULL, device_match_any);
|
|
}
|
|
|
|
#ifdef CONFIG_ACPI
|
|
struct acpi_device;
|
|
|
|
/**
|
|
* bus_find_device_by_acpi_dev : device iterator for locating a particular device
|
|
* matching the ACPI COMPANION device.
|
|
* @bus: bus type
|
|
* @adev: ACPI COMPANION device to match.
|
|
*/
|
|
static inline struct device *
|
|
bus_find_device_by_acpi_dev(struct bus_type *bus, const struct acpi_device *adev)
|
|
{
|
|
return bus_find_device(bus, NULL, adev, device_match_acpi_dev);
|
|
}
|
|
#else
|
|
static inline struct device *
|
|
bus_find_device_by_acpi_dev(struct bus_type *bus, const void *adev)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
struct device *subsys_find_device_by_id(struct bus_type *bus, unsigned int id,
|
|
struct device *hint);
|
|
int bus_for_each_drv(struct bus_type *bus, struct device_driver *start,
|
|
void *data, int (*fn)(struct device_driver *, void *));
|
|
void bus_sort_breadthfirst(struct bus_type *bus,
|
|
int (*compare)(const struct device *a,
|
|
const struct device *b));
|
|
/*
|
|
* Bus notifiers: Get notified of addition/removal of devices
|
|
* and binding/unbinding of drivers to devices.
|
|
* In the long run, it should be a replacement for the platform
|
|
* notify hooks.
|
|
*/
|
|
struct notifier_block;
|
|
|
|
extern int bus_register_notifier(struct bus_type *bus,
|
|
struct notifier_block *nb);
|
|
extern int bus_unregister_notifier(struct bus_type *bus,
|
|
struct notifier_block *nb);
|
|
|
|
/* All 4 notifers below get called with the target struct device *
|
|
* as an argument. Note that those functions are likely to be called
|
|
* with the device lock held in the core, so be careful.
|
|
*/
|
|
#define BUS_NOTIFY_ADD_DEVICE 0x00000001 /* device added */
|
|
#define BUS_NOTIFY_DEL_DEVICE 0x00000002 /* device to be removed */
|
|
#define BUS_NOTIFY_REMOVED_DEVICE 0x00000003 /* device removed */
|
|
#define BUS_NOTIFY_BIND_DRIVER 0x00000004 /* driver about to be
|
|
bound */
|
|
#define BUS_NOTIFY_BOUND_DRIVER 0x00000005 /* driver bound to device */
|
|
#define BUS_NOTIFY_UNBIND_DRIVER 0x00000006 /* driver about to be
|
|
unbound */
|
|
#define BUS_NOTIFY_UNBOUND_DRIVER 0x00000007 /* driver is unbound
|
|
from the device */
|
|
#define BUS_NOTIFY_DRIVER_NOT_BOUND 0x00000008 /* driver fails to be bound */
|
|
|
|
extern struct kset *bus_get_kset(struct bus_type *bus);
|
|
extern struct klist *bus_get_device_klist(struct bus_type *bus);
|
|
|
|
/**
|
|
* enum probe_type - device driver probe type to try
|
|
* Device drivers may opt in for special handling of their
|
|
* respective probe routines. This tells the core what to
|
|
* expect and prefer.
|
|
*
|
|
* @PROBE_DEFAULT_STRATEGY: Used by drivers that work equally well
|
|
* whether probed synchronously or asynchronously.
|
|
* @PROBE_PREFER_ASYNCHRONOUS: Drivers for "slow" devices which
|
|
* probing order is not essential for booting the system may
|
|
* opt into executing their probes asynchronously.
|
|
* @PROBE_FORCE_SYNCHRONOUS: Use this to annotate drivers that need
|
|
* their probe routines to run synchronously with driver and
|
|
* device registration (with the exception of -EPROBE_DEFER
|
|
* handling - re-probing always ends up being done asynchronously).
|
|
*
|
|
* Note that the end goal is to switch the kernel to use asynchronous
|
|
* probing by default, so annotating drivers with
|
|
* %PROBE_PREFER_ASYNCHRONOUS is a temporary measure that allows us
|
|
* to speed up boot process while we are validating the rest of the
|
|
* drivers.
|
|
*/
|
|
enum probe_type {
|
|
PROBE_DEFAULT_STRATEGY,
|
|
PROBE_PREFER_ASYNCHRONOUS,
|
|
PROBE_FORCE_SYNCHRONOUS,
|
|
};
|
|
|
|
/**
|
|
* struct device_driver - The basic device driver structure
|
|
* @name: Name of the device driver.
|
|
* @bus: The bus which the device of this driver belongs to.
|
|
* @owner: The module owner.
|
|
* @mod_name: Used for built-in modules.
|
|
* @suppress_bind_attrs: Disables bind/unbind via sysfs.
|
|
* @probe_type: Type of the probe (synchronous or asynchronous) to use.
|
|
* @of_match_table: The open firmware table.
|
|
* @acpi_match_table: The ACPI match table.
|
|
* @probe: Called to query the existence of a specific device,
|
|
* whether this driver can work with it, and bind the driver
|
|
* to a specific device.
|
|
* @sync_state: Called to sync device state to software state after all the
|
|
* state tracking consumers linked to this device (present at
|
|
* the time of late_initcall) have successfully bound to a
|
|
* driver. If the device has no consumers, this function will
|
|
* be called at late_initcall_sync level. If the device has
|
|
* consumers that are never bound to a driver, this function
|
|
* will never get called until they do.
|
|
* @remove: Called when the device is removed from the system to
|
|
* unbind a device from this driver.
|
|
* @shutdown: Called at shut-down time to quiesce the device.
|
|
* @suspend: Called to put the device to sleep mode. Usually to a
|
|
* low power state.
|
|
* @resume: Called to bring a device from sleep mode.
|
|
* @groups: Default attributes that get created by the driver core
|
|
* automatically.
|
|
* @dev_groups: Additional attributes attached to device instance once the
|
|
* it is bound to the driver.
|
|
* @pm: Power management operations of the device which matched
|
|
* this driver.
|
|
* @coredump: Called when sysfs entry is written to. The device driver
|
|
* is expected to call the dev_coredump API resulting in a
|
|
* uevent.
|
|
* @p: Driver core's private data, no one other than the driver
|
|
* core can touch this.
|
|
*
|
|
* The device driver-model tracks all of the drivers known to the system.
|
|
* The main reason for this tracking is to enable the driver core to match
|
|
* up drivers with new devices. Once drivers are known objects within the
|
|
* system, however, a number of other things become possible. Device drivers
|
|
* can export information and configuration variables that are independent
|
|
* of any specific device.
|
|
*/
|
|
struct device_driver {
|
|
const char *name;
|
|
struct bus_type *bus;
|
|
|
|
struct module *owner;
|
|
const char *mod_name; /* used for built-in modules */
|
|
|
|
bool suppress_bind_attrs; /* disables bind/unbind via sysfs */
|
|
enum probe_type probe_type;
|
|
|
|
const struct of_device_id *of_match_table;
|
|
const struct acpi_device_id *acpi_match_table;
|
|
|
|
int (*probe) (struct device *dev);
|
|
void (*sync_state)(struct device *dev);
|
|
int (*remove) (struct device *dev);
|
|
void (*shutdown) (struct device *dev);
|
|
int (*suspend) (struct device *dev, pm_message_t state);
|
|
int (*resume) (struct device *dev);
|
|
const struct attribute_group **groups;
|
|
const struct attribute_group **dev_groups;
|
|
|
|
const struct dev_pm_ops *pm;
|
|
void (*coredump) (struct device *dev);
|
|
|
|
struct driver_private *p;
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
|
|
extern int __must_check driver_register(struct device_driver *drv);
|
|
extern void driver_unregister(struct device_driver *drv);
|
|
|
|
extern struct device_driver *driver_find(const char *name,
|
|
struct bus_type *bus);
|
|
extern int driver_probe_done(void);
|
|
extern void wait_for_device_probe(void);
|
|
|
|
/* sysfs interface for exporting driver attributes */
|
|
|
|
struct driver_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct device_driver *driver, char *buf);
|
|
ssize_t (*store)(struct device_driver *driver, const char *buf,
|
|
size_t count);
|
|
};
|
|
|
|
#define DRIVER_ATTR_RW(_name) \
|
|
struct driver_attribute driver_attr_##_name = __ATTR_RW(_name)
|
|
#define DRIVER_ATTR_RO(_name) \
|
|
struct driver_attribute driver_attr_##_name = __ATTR_RO(_name)
|
|
#define DRIVER_ATTR_WO(_name) \
|
|
struct driver_attribute driver_attr_##_name = __ATTR_WO(_name)
|
|
|
|
extern int __must_check driver_create_file(struct device_driver *driver,
|
|
const struct driver_attribute *attr);
|
|
extern void driver_remove_file(struct device_driver *driver,
|
|
const struct driver_attribute *attr);
|
|
|
|
int driver_set_override(struct device *dev, const char **override,
|
|
const char *s, size_t len);
|
|
extern int __must_check driver_for_each_device(struct device_driver *drv,
|
|
struct device *start,
|
|
void *data,
|
|
int (*fn)(struct device *dev,
|
|
void *));
|
|
struct device *driver_find_device(struct device_driver *drv,
|
|
struct device *start, const void *data,
|
|
int (*match)(struct device *dev, const void *data));
|
|
|
|
/**
|
|
* driver_find_device_by_name - device iterator for locating a particular device
|
|
* of a specific name.
|
|
* @drv: the driver we're iterating
|
|
* @name: name of the device to match
|
|
*/
|
|
static inline struct device *driver_find_device_by_name(struct device_driver *drv,
|
|
const char *name)
|
|
{
|
|
return driver_find_device(drv, NULL, name, device_match_name);
|
|
}
|
|
|
|
/**
|
|
* driver_find_device_by_of_node- device iterator for locating a particular device
|
|
* by of_node pointer.
|
|
* @drv: the driver we're iterating
|
|
* @np: of_node pointer to match.
|
|
*/
|
|
static inline struct device *
|
|
driver_find_device_by_of_node(struct device_driver *drv,
|
|
const struct device_node *np)
|
|
{
|
|
return driver_find_device(drv, NULL, np, device_match_of_node);
|
|
}
|
|
|
|
/**
|
|
* driver_find_device_by_fwnode- device iterator for locating a particular device
|
|
* by fwnode pointer.
|
|
* @drv: the driver we're iterating
|
|
* @fwnode: fwnode pointer to match.
|
|
*/
|
|
static inline struct device *
|
|
driver_find_device_by_fwnode(struct device_driver *drv,
|
|
const struct fwnode_handle *fwnode)
|
|
{
|
|
return driver_find_device(drv, NULL, fwnode, device_match_fwnode);
|
|
}
|
|
|
|
/**
|
|
* driver_find_device_by_devt- device iterator for locating a particular device
|
|
* by devt.
|
|
* @drv: the driver we're iterating
|
|
* @devt: devt pointer to match.
|
|
*/
|
|
static inline struct device *driver_find_device_by_devt(struct device_driver *drv,
|
|
dev_t devt)
|
|
{
|
|
return driver_find_device(drv, NULL, &devt, device_match_devt);
|
|
}
|
|
|
|
static inline struct device *driver_find_next_device(struct device_driver *drv,
|
|
struct device *start)
|
|
{
|
|
return driver_find_device(drv, start, NULL, device_match_any);
|
|
}
|
|
|
|
#ifdef CONFIG_ACPI
|
|
/**
|
|
* driver_find_device_by_acpi_dev : device iterator for locating a particular
|
|
* device matching the ACPI_COMPANION device.
|
|
* @drv: the driver we're iterating
|
|
* @adev: ACPI_COMPANION device to match.
|
|
*/
|
|
static inline struct device *
|
|
driver_find_device_by_acpi_dev(struct device_driver *drv,
|
|
const struct acpi_device *adev)
|
|
{
|
|
return driver_find_device(drv, NULL, adev, device_match_acpi_dev);
|
|
}
|
|
#else
|
|
static inline struct device *
|
|
driver_find_device_by_acpi_dev(struct device_driver *drv, const void *adev)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
void driver_deferred_probe_add(struct device *dev);
|
|
int driver_deferred_probe_check_state(struct device *dev);
|
|
int driver_deferred_probe_check_state_continue(struct device *dev);
|
|
|
|
/**
|
|
* struct subsys_interface - interfaces to device functions
|
|
* @name: name of the device function
|
|
* @subsys: subsytem of the devices to attach to
|
|
* @node: the list of functions registered at the subsystem
|
|
* @add_dev: device hookup to device function handler
|
|
* @remove_dev: device hookup to device function handler
|
|
*
|
|
* Simple interfaces attached to a subsystem. Multiple interfaces can
|
|
* attach to a subsystem and its devices. Unlike drivers, they do not
|
|
* exclusively claim or control devices. Interfaces usually represent
|
|
* a specific functionality of a subsystem/class of devices.
|
|
*/
|
|
struct subsys_interface {
|
|
const char *name;
|
|
struct bus_type *subsys;
|
|
struct list_head node;
|
|
int (*add_dev)(struct device *dev, struct subsys_interface *sif);
|
|
void (*remove_dev)(struct device *dev, struct subsys_interface *sif);
|
|
};
|
|
|
|
int subsys_interface_register(struct subsys_interface *sif);
|
|
void subsys_interface_unregister(struct subsys_interface *sif);
|
|
|
|
int subsys_system_register(struct bus_type *subsys,
|
|
const struct attribute_group **groups);
|
|
int subsys_virtual_register(struct bus_type *subsys,
|
|
const struct attribute_group **groups);
|
|
|
|
/**
|
|
* struct class - device classes
|
|
* @name: Name of the class.
|
|
* @owner: The module owner.
|
|
* @class_groups: Default attributes of this class.
|
|
* @dev_groups: Default attributes of the devices that belong to the class.
|
|
* @dev_kobj: The kobject that represents this class and links it into the hierarchy.
|
|
* @dev_uevent: Called when a device is added, removed from this class, or a
|
|
* few other things that generate uevents to add the environment
|
|
* variables.
|
|
* @devnode: Callback to provide the devtmpfs.
|
|
* @class_release: Called to release this class.
|
|
* @dev_release: Called to release the device.
|
|
* @shutdown_pre: Called at shut-down time before driver shutdown.
|
|
* @ns_type: Callbacks so sysfs can detemine namespaces.
|
|
* @namespace: Namespace of the device belongs to this class.
|
|
* @get_ownership: Allows class to specify uid/gid of the sysfs directories
|
|
* for the devices belonging to the class. Usually tied to
|
|
* device's namespace.
|
|
* @pm: The default device power management operations of this class.
|
|
* @p: The private data of the driver core, no one other than the
|
|
* driver core can touch this.
|
|
*
|
|
* A class is a higher-level view of a device that abstracts out low-level
|
|
* implementation details. Drivers may see a SCSI disk or an ATA disk, but,
|
|
* at the class level, they are all simply disks. Classes allow user space
|
|
* to work with devices based on what they do, rather than how they are
|
|
* connected or how they work.
|
|
*/
|
|
struct class {
|
|
const char *name;
|
|
struct module *owner;
|
|
|
|
const struct attribute_group **class_groups;
|
|
const struct attribute_group **dev_groups;
|
|
struct kobject *dev_kobj;
|
|
|
|
int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
|
|
char *(*devnode)(struct device *dev, umode_t *mode);
|
|
|
|
void (*class_release)(struct class *class);
|
|
void (*dev_release)(struct device *dev);
|
|
|
|
int (*shutdown_pre)(struct device *dev);
|
|
|
|
const struct kobj_ns_type_operations *ns_type;
|
|
const void *(*namespace)(struct device *dev);
|
|
|
|
void (*get_ownership)(struct device *dev, kuid_t *uid, kgid_t *gid);
|
|
|
|
const struct dev_pm_ops *pm;
|
|
|
|
struct subsys_private *p;
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
struct class_dev_iter {
|
|
struct klist_iter ki;
|
|
const struct device_type *type;
|
|
};
|
|
|
|
extern struct kobject *sysfs_dev_block_kobj;
|
|
extern struct kobject *sysfs_dev_char_kobj;
|
|
extern int __must_check __class_register(struct class *class,
|
|
struct lock_class_key *key);
|
|
extern void class_unregister(struct class *class);
|
|
|
|
/* This is a #define to keep the compiler from merging different
|
|
* instances of the __key variable */
|
|
#define class_register(class) \
|
|
({ \
|
|
static struct lock_class_key __key; \
|
|
__class_register(class, &__key); \
|
|
})
|
|
|
|
struct class_compat;
|
|
struct class_compat *class_compat_register(const char *name);
|
|
void class_compat_unregister(struct class_compat *cls);
|
|
int class_compat_create_link(struct class_compat *cls, struct device *dev,
|
|
struct device *device_link);
|
|
void class_compat_remove_link(struct class_compat *cls, struct device *dev,
|
|
struct device *device_link);
|
|
|
|
extern void class_dev_iter_init(struct class_dev_iter *iter,
|
|
struct class *class,
|
|
struct device *start,
|
|
const struct device_type *type);
|
|
extern struct device *class_dev_iter_next(struct class_dev_iter *iter);
|
|
extern void class_dev_iter_exit(struct class_dev_iter *iter);
|
|
|
|
extern int class_for_each_device(struct class *class, struct device *start,
|
|
void *data,
|
|
int (*fn)(struct device *dev, void *data));
|
|
extern struct device *class_find_device(struct class *class,
|
|
struct device *start, const void *data,
|
|
int (*match)(struct device *, const void *));
|
|
|
|
/**
|
|
* class_find_device_by_name - device iterator for locating a particular device
|
|
* of a specific name.
|
|
* @class: class type
|
|
* @name: name of the device to match
|
|
*/
|
|
static inline struct device *class_find_device_by_name(struct class *class,
|
|
const char *name)
|
|
{
|
|
return class_find_device(class, NULL, name, device_match_name);
|
|
}
|
|
|
|
/**
|
|
* class_find_device_by_of_node : device iterator for locating a particular device
|
|
* matching the of_node.
|
|
* @class: class type
|
|
* @np: of_node of the device to match.
|
|
*/
|
|
static inline struct device *
|
|
class_find_device_by_of_node(struct class *class, const struct device_node *np)
|
|
{
|
|
return class_find_device(class, NULL, np, device_match_of_node);
|
|
}
|
|
|
|
/**
|
|
* class_find_device_by_fwnode : device iterator for locating a particular device
|
|
* matching the fwnode.
|
|
* @class: class type
|
|
* @fwnode: fwnode of the device to match.
|
|
*/
|
|
static inline struct device *
|
|
class_find_device_by_fwnode(struct class *class,
|
|
const struct fwnode_handle *fwnode)
|
|
{
|
|
return class_find_device(class, NULL, fwnode, device_match_fwnode);
|
|
}
|
|
|
|
/**
|
|
* class_find_device_by_devt : device iterator for locating a particular device
|
|
* matching the device type.
|
|
* @class: class type
|
|
* @devt: device type of the device to match.
|
|
*/
|
|
static inline struct device *class_find_device_by_devt(struct class *class,
|
|
dev_t devt)
|
|
{
|
|
return class_find_device(class, NULL, &devt, device_match_devt);
|
|
}
|
|
|
|
#ifdef CONFIG_ACPI
|
|
struct acpi_device;
|
|
/**
|
|
* class_find_device_by_acpi_dev : device iterator for locating a particular
|
|
* device matching the ACPI_COMPANION device.
|
|
* @class: class type
|
|
* @adev: ACPI_COMPANION device to match.
|
|
*/
|
|
static inline struct device *
|
|
class_find_device_by_acpi_dev(struct class *class, const struct acpi_device *adev)
|
|
{
|
|
return class_find_device(class, NULL, adev, device_match_acpi_dev);
|
|
}
|
|
#else
|
|
static inline struct device *
|
|
class_find_device_by_acpi_dev(struct class *class, const void *adev)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
struct class_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct class *class, struct class_attribute *attr,
|
|
char *buf);
|
|
ssize_t (*store)(struct class *class, struct class_attribute *attr,
|
|
const char *buf, size_t count);
|
|
};
|
|
|
|
#define CLASS_ATTR_RW(_name) \
|
|
struct class_attribute class_attr_##_name = __ATTR_RW(_name)
|
|
#define CLASS_ATTR_RO(_name) \
|
|
struct class_attribute class_attr_##_name = __ATTR_RO(_name)
|
|
#define CLASS_ATTR_WO(_name) \
|
|
struct class_attribute class_attr_##_name = __ATTR_WO(_name)
|
|
|
|
extern int __must_check class_create_file_ns(struct class *class,
|
|
const struct class_attribute *attr,
|
|
const void *ns);
|
|
extern void class_remove_file_ns(struct class *class,
|
|
const struct class_attribute *attr,
|
|
const void *ns);
|
|
|
|
static inline int __must_check class_create_file(struct class *class,
|
|
const struct class_attribute *attr)
|
|
{
|
|
return class_create_file_ns(class, attr, NULL);
|
|
}
|
|
|
|
static inline void class_remove_file(struct class *class,
|
|
const struct class_attribute *attr)
|
|
{
|
|
return class_remove_file_ns(class, attr, NULL);
|
|
}
|
|
|
|
/* Simple class attribute that is just a static string */
|
|
struct class_attribute_string {
|
|
struct class_attribute attr;
|
|
char *str;
|
|
};
|
|
|
|
/* Currently read-only only */
|
|
#define _CLASS_ATTR_STRING(_name, _mode, _str) \
|
|
{ __ATTR(_name, _mode, show_class_attr_string, NULL), _str }
|
|
#define CLASS_ATTR_STRING(_name, _mode, _str) \
|
|
struct class_attribute_string class_attr_##_name = \
|
|
_CLASS_ATTR_STRING(_name, _mode, _str)
|
|
|
|
extern ssize_t show_class_attr_string(struct class *class, struct class_attribute *attr,
|
|
char *buf);
|
|
|
|
struct class_interface {
|
|
struct list_head node;
|
|
struct class *class;
|
|
|
|
int (*add_dev) (struct device *, struct class_interface *);
|
|
void (*remove_dev) (struct device *, struct class_interface *);
|
|
};
|
|
|
|
extern int __must_check class_interface_register(struct class_interface *);
|
|
extern void class_interface_unregister(struct class_interface *);
|
|
|
|
extern struct class * __must_check __class_create(struct module *owner,
|
|
const char *name,
|
|
struct lock_class_key *key);
|
|
extern void class_destroy(struct class *cls);
|
|
|
|
/* This is a #define to keep the compiler from merging different
|
|
* instances of the __key variable */
|
|
#define class_create(owner, name) \
|
|
({ \
|
|
static struct lock_class_key __key; \
|
|
__class_create(owner, name, &__key); \
|
|
})
|
|
|
|
/*
|
|
* The type of device, "struct device" is embedded in. A class
|
|
* or bus can contain devices of different types
|
|
* like "partitions" and "disks", "mouse" and "event".
|
|
* This identifies the device type and carries type-specific
|
|
* information, equivalent to the kobj_type of a kobject.
|
|
* If "name" is specified, the uevent will contain it in
|
|
* the DEVTYPE variable.
|
|
*/
|
|
struct device_type {
|
|
const char *name;
|
|
const struct attribute_group **groups;
|
|
int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
|
|
char *(*devnode)(struct device *dev, umode_t *mode,
|
|
kuid_t *uid, kgid_t *gid);
|
|
void (*release)(struct device *dev);
|
|
|
|
const struct dev_pm_ops *pm;
|
|
};
|
|
|
|
/* interface for exporting device attributes */
|
|
struct device_attribute {
|
|
struct attribute attr;
|
|
ssize_t (*show)(struct device *dev, struct device_attribute *attr,
|
|
char *buf);
|
|
ssize_t (*store)(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count);
|
|
};
|
|
|
|
struct dev_ext_attribute {
|
|
struct device_attribute attr;
|
|
void *var;
|
|
};
|
|
|
|
ssize_t device_show_ulong(struct device *dev, struct device_attribute *attr,
|
|
char *buf);
|
|
ssize_t device_store_ulong(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count);
|
|
ssize_t device_show_int(struct device *dev, struct device_attribute *attr,
|
|
char *buf);
|
|
ssize_t device_store_int(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count);
|
|
ssize_t device_show_bool(struct device *dev, struct device_attribute *attr,
|
|
char *buf);
|
|
ssize_t device_store_bool(struct device *dev, struct device_attribute *attr,
|
|
const char *buf, size_t count);
|
|
|
|
#define DEVICE_ATTR(_name, _mode, _show, _store) \
|
|
struct device_attribute dev_attr_##_name = __ATTR(_name, _mode, _show, _store)
|
|
#define DEVICE_ATTR_PREALLOC(_name, _mode, _show, _store) \
|
|
struct device_attribute dev_attr_##_name = \
|
|
__ATTR_PREALLOC(_name, _mode, _show, _store)
|
|
#define DEVICE_ATTR_RW(_name) \
|
|
struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
|
|
#define DEVICE_ATTR_RO(_name) \
|
|
struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
|
|
#define DEVICE_ATTR_WO(_name) \
|
|
struct device_attribute dev_attr_##_name = __ATTR_WO(_name)
|
|
#define DEVICE_ULONG_ATTR(_name, _mode, _var) \
|
|
struct dev_ext_attribute dev_attr_##_name = \
|
|
{ __ATTR(_name, _mode, device_show_ulong, device_store_ulong), &(_var) }
|
|
#define DEVICE_INT_ATTR(_name, _mode, _var) \
|
|
struct dev_ext_attribute dev_attr_##_name = \
|
|
{ __ATTR(_name, _mode, device_show_int, device_store_int), &(_var) }
|
|
#define DEVICE_BOOL_ATTR(_name, _mode, _var) \
|
|
struct dev_ext_attribute dev_attr_##_name = \
|
|
{ __ATTR(_name, _mode, device_show_bool, device_store_bool), &(_var) }
|
|
#define DEVICE_ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) \
|
|
struct device_attribute dev_attr_##_name = \
|
|
__ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store)
|
|
|
|
extern int device_create_file(struct device *device,
|
|
const struct device_attribute *entry);
|
|
extern void device_remove_file(struct device *dev,
|
|
const struct device_attribute *attr);
|
|
extern bool device_remove_file_self(struct device *dev,
|
|
const struct device_attribute *attr);
|
|
extern int __must_check device_create_bin_file(struct device *dev,
|
|
const struct bin_attribute *attr);
|
|
extern void device_remove_bin_file(struct device *dev,
|
|
const struct bin_attribute *attr);
|
|
|
|
/* device resource management */
|
|
typedef void (*dr_release_t)(struct device *dev, void *res);
|
|
typedef int (*dr_match_t)(struct device *dev, void *res, void *match_data);
|
|
|
|
#ifdef CONFIG_DEBUG_DEVRES
|
|
extern void *__devres_alloc_node(dr_release_t release, size_t size, gfp_t gfp,
|
|
int nid, const char *name) __malloc;
|
|
#define devres_alloc(release, size, gfp) \
|
|
__devres_alloc_node(release, size, gfp, NUMA_NO_NODE, #release)
|
|
#define devres_alloc_node(release, size, gfp, nid) \
|
|
__devres_alloc_node(release, size, gfp, nid, #release)
|
|
#else
|
|
extern void *devres_alloc_node(dr_release_t release, size_t size, gfp_t gfp,
|
|
int nid) __malloc;
|
|
static inline void *devres_alloc(dr_release_t release, size_t size, gfp_t gfp)
|
|
{
|
|
return devres_alloc_node(release, size, gfp, NUMA_NO_NODE);
|
|
}
|
|
#endif
|
|
|
|
extern void devres_for_each_res(struct device *dev, dr_release_t release,
|
|
dr_match_t match, void *match_data,
|
|
void (*fn)(struct device *, void *, void *),
|
|
void *data);
|
|
extern void devres_free(void *res);
|
|
extern void devres_add(struct device *dev, void *res);
|
|
extern void *devres_find(struct device *dev, dr_release_t release,
|
|
dr_match_t match, void *match_data);
|
|
extern void *devres_get(struct device *dev, void *new_res,
|
|
dr_match_t match, void *match_data);
|
|
extern void *devres_remove(struct device *dev, dr_release_t release,
|
|
dr_match_t match, void *match_data);
|
|
extern int devres_destroy(struct device *dev, dr_release_t release,
|
|
dr_match_t match, void *match_data);
|
|
extern int devres_release(struct device *dev, dr_release_t release,
|
|
dr_match_t match, void *match_data);
|
|
|
|
/* devres group */
|
|
extern void * __must_check devres_open_group(struct device *dev, void *id,
|
|
gfp_t gfp);
|
|
extern void devres_close_group(struct device *dev, void *id);
|
|
extern void devres_remove_group(struct device *dev, void *id);
|
|
extern int devres_release_group(struct device *dev, void *id);
|
|
|
|
/* managed devm_k.alloc/kfree for device drivers */
|
|
extern void *devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) __malloc;
|
|
extern __printf(3, 0)
|
|
char *devm_kvasprintf(struct device *dev, gfp_t gfp, const char *fmt,
|
|
va_list ap) __malloc;
|
|
extern __printf(3, 4)
|
|
char *devm_kasprintf(struct device *dev, gfp_t gfp, const char *fmt, ...) __malloc;
|
|
static inline void *devm_kzalloc(struct device *dev, size_t size, gfp_t gfp)
|
|
{
|
|
return devm_kmalloc(dev, size, gfp | __GFP_ZERO);
|
|
}
|
|
static inline void *devm_kmalloc_array(struct device *dev,
|
|
size_t n, size_t size, gfp_t flags)
|
|
{
|
|
size_t bytes;
|
|
|
|
if (unlikely(check_mul_overflow(n, size, &bytes)))
|
|
return NULL;
|
|
|
|
return devm_kmalloc(dev, bytes, flags);
|
|
}
|
|
static inline void *devm_kcalloc(struct device *dev,
|
|
size_t n, size_t size, gfp_t flags)
|
|
{
|
|
return devm_kmalloc_array(dev, n, size, flags | __GFP_ZERO);
|
|
}
|
|
extern void devm_kfree(struct device *dev, const void *p);
|
|
extern char *devm_kstrdup(struct device *dev, const char *s, gfp_t gfp) __malloc;
|
|
extern const char *devm_kstrdup_const(struct device *dev,
|
|
const char *s, gfp_t gfp);
|
|
extern void *devm_kmemdup(struct device *dev, const void *src, size_t len,
|
|
gfp_t gfp);
|
|
|
|
extern unsigned long devm_get_free_pages(struct device *dev,
|
|
gfp_t gfp_mask, unsigned int order);
|
|
extern void devm_free_pages(struct device *dev, unsigned long addr);
|
|
|
|
void __iomem *devm_ioremap_resource(struct device *dev,
|
|
const struct resource *res);
|
|
|
|
void __iomem *devm_of_iomap(struct device *dev,
|
|
struct device_node *node, int index,
|
|
resource_size_t *size);
|
|
|
|
/* allows to add/remove a custom action to devres stack */
|
|
int devm_add_action(struct device *dev, void (*action)(void *), void *data);
|
|
void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
|
|
void devm_release_action(struct device *dev, void (*action)(void *), void *data);
|
|
|
|
static inline int devm_add_action_or_reset(struct device *dev,
|
|
void (*action)(void *), void *data)
|
|
{
|
|
int ret;
|
|
|
|
ret = devm_add_action(dev, action, data);
|
|
if (ret)
|
|
action(data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* devm_alloc_percpu - Resource-managed alloc_percpu
|
|
* @dev: Device to allocate per-cpu memory for
|
|
* @type: Type to allocate per-cpu memory for
|
|
*
|
|
* Managed alloc_percpu. Per-cpu memory allocated with this function is
|
|
* automatically freed on driver detach.
|
|
*
|
|
* RETURNS:
|
|
* Pointer to allocated memory on success, NULL on failure.
|
|
*/
|
|
#define devm_alloc_percpu(dev, type) \
|
|
((typeof(type) __percpu *)__devm_alloc_percpu((dev), sizeof(type), \
|
|
__alignof__(type)))
|
|
|
|
void __percpu *__devm_alloc_percpu(struct device *dev, size_t size,
|
|
size_t align);
|
|
void devm_free_percpu(struct device *dev, void __percpu *pdata);
|
|
|
|
struct device_dma_parameters {
|
|
/*
|
|
* a low level driver may set these to teach IOMMU code about
|
|
* sg limitations.
|
|
*/
|
|
unsigned int max_segment_size;
|
|
unsigned long segment_boundary_mask;
|
|
};
|
|
|
|
/**
|
|
* struct device_connection - Device Connection Descriptor
|
|
* @fwnode: The device node of the connected device
|
|
* @endpoint: The names of the two devices connected together
|
|
* @id: Unique identifier for the connection
|
|
* @list: List head, private, for internal use only
|
|
*
|
|
* NOTE: @fwnode is not used together with @endpoint. @fwnode is used when
|
|
* platform firmware defines the connection. When the connection is registered
|
|
* with device_connection_add() @endpoint is used instead.
|
|
*/
|
|
struct device_connection {
|
|
struct fwnode_handle *fwnode;
|
|
const char *endpoint[2];
|
|
const char *id;
|
|
struct list_head list;
|
|
};
|
|
|
|
typedef void *(*devcon_match_fn_t)(struct device_connection *con, int ep,
|
|
void *data);
|
|
|
|
void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
|
|
const char *con_id, void *data,
|
|
devcon_match_fn_t match);
|
|
void *device_connection_find_match(struct device *dev, const char *con_id,
|
|
void *data, devcon_match_fn_t match);
|
|
|
|
struct device *device_connection_find(struct device *dev, const char *con_id);
|
|
|
|
void device_connection_add(struct device_connection *con);
|
|
void device_connection_remove(struct device_connection *con);
|
|
|
|
/**
|
|
* device_connections_add - Add multiple device connections at once
|
|
* @cons: Zero terminated array of device connection descriptors
|
|
*/
|
|
static inline void device_connections_add(struct device_connection *cons)
|
|
{
|
|
struct device_connection *c;
|
|
|
|
for (c = cons; c->endpoint[0]; c++)
|
|
device_connection_add(c);
|
|
}
|
|
|
|
/**
|
|
* device_connections_remove - Remove multiple device connections at once
|
|
* @cons: Zero terminated array of device connection descriptors
|
|
*/
|
|
static inline void device_connections_remove(struct device_connection *cons)
|
|
{
|
|
struct device_connection *c;
|
|
|
|
for (c = cons; c->endpoint[0]; c++)
|
|
device_connection_remove(c);
|
|
}
|
|
|
|
/**
|
|
* enum device_link_state - Device link states.
|
|
* @DL_STATE_NONE: The presence of the drivers is not being tracked.
|
|
* @DL_STATE_DORMANT: None of the supplier/consumer drivers is present.
|
|
* @DL_STATE_AVAILABLE: The supplier driver is present, but the consumer is not.
|
|
* @DL_STATE_CONSUMER_PROBE: The consumer is probing (supplier driver present).
|
|
* @DL_STATE_ACTIVE: Both the supplier and consumer drivers are present.
|
|
* @DL_STATE_SUPPLIER_UNBIND: The supplier driver is unbinding.
|
|
*/
|
|
enum device_link_state {
|
|
DL_STATE_NONE = -1,
|
|
DL_STATE_DORMANT = 0,
|
|
DL_STATE_AVAILABLE,
|
|
DL_STATE_CONSUMER_PROBE,
|
|
DL_STATE_ACTIVE,
|
|
DL_STATE_SUPPLIER_UNBIND,
|
|
};
|
|
|
|
/*
|
|
* Device link flags.
|
|
*
|
|
* STATELESS: The core will not remove this link automatically.
|
|
* AUTOREMOVE_CONSUMER: Remove the link automatically on consumer driver unbind.
|
|
* PM_RUNTIME: If set, the runtime PM framework will use this link.
|
|
* RPM_ACTIVE: Run pm_runtime_get_sync() on the supplier during link creation.
|
|
* AUTOREMOVE_SUPPLIER: Remove the link automatically on supplier driver unbind.
|
|
* AUTOPROBE_CONSUMER: Probe consumer driver automatically after supplier binds.
|
|
* MANAGED: The core tracks presence of supplier/consumer drivers (internal).
|
|
* SYNC_STATE_ONLY: Link only affects sync_state() behavior.
|
|
*/
|
|
#define DL_FLAG_STATELESS BIT(0)
|
|
#define DL_FLAG_AUTOREMOVE_CONSUMER BIT(1)
|
|
#define DL_FLAG_PM_RUNTIME BIT(2)
|
|
#define DL_FLAG_RPM_ACTIVE BIT(3)
|
|
#define DL_FLAG_AUTOREMOVE_SUPPLIER BIT(4)
|
|
#define DL_FLAG_AUTOPROBE_CONSUMER BIT(5)
|
|
#define DL_FLAG_MANAGED BIT(6)
|
|
#define DL_FLAG_SYNC_STATE_ONLY BIT(7)
|
|
|
|
/**
|
|
* enum dl_dev_state - Device driver presence tracking information.
|
|
* @DL_DEV_NO_DRIVER: There is no driver attached to the device.
|
|
* @DL_DEV_PROBING: A driver is probing.
|
|
* @DL_DEV_DRIVER_BOUND: The driver has been bound to the device.
|
|
* @DL_DEV_UNBINDING: The driver is unbinding from the device.
|
|
*/
|
|
enum dl_dev_state {
|
|
DL_DEV_NO_DRIVER = 0,
|
|
DL_DEV_PROBING,
|
|
DL_DEV_DRIVER_BOUND,
|
|
DL_DEV_UNBINDING,
|
|
};
|
|
|
|
/**
|
|
* struct dev_links_info - Device data related to device links.
|
|
* @suppliers: List of links to supplier devices.
|
|
* @consumers: List of links to consumer devices.
|
|
* @needs_suppliers: Hook to global list of devices waiting for suppliers.
|
|
* @defer_hook: Hook to global list of devices that have deferred sync_state or
|
|
* deferred fw_devlink.
|
|
* @need_for_probe: If needs_suppliers is on a list, this indicates if the
|
|
* suppliers are needed for probe or not.
|
|
* @status: Driver status information.
|
|
*/
|
|
struct dev_links_info {
|
|
struct list_head suppliers;
|
|
struct list_head consumers;
|
|
struct list_head needs_suppliers;
|
|
struct list_head defer_hook;
|
|
bool need_for_probe;
|
|
enum dl_dev_state status;
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
/**
|
|
* struct device - The basic device structure
|
|
* @parent: The device's "parent" device, the device to which it is attached.
|
|
* In most cases, a parent device is some sort of bus or host
|
|
* controller. If parent is NULL, the device, is a top-level device,
|
|
* which is not usually what you want.
|
|
* @p: Holds the private data of the driver core portions of the device.
|
|
* See the comment of the struct device_private for detail.
|
|
* @kobj: A top-level, abstract class from which other classes are derived.
|
|
* @init_name: Initial name of the device.
|
|
* @type: The type of device.
|
|
* This identifies the device type and carries type-specific
|
|
* information.
|
|
* @mutex: Mutex to synchronize calls to its driver.
|
|
* @lockdep_mutex: An optional debug lock that a subsystem can use as a
|
|
* peer lock to gain localized lockdep coverage of the device_lock.
|
|
* @bus: Type of bus device is on.
|
|
* @driver: Which driver has allocated this
|
|
* @platform_data: Platform data specific to the device.
|
|
* Example: For devices on custom boards, as typical of embedded
|
|
* and SOC based hardware, Linux often uses platform_data to point
|
|
* to board-specific structures describing devices and how they
|
|
* are wired. That can include what ports are available, chip
|
|
* variants, which GPIO pins act in what additional roles, and so
|
|
* on. This shrinks the "Board Support Packages" (BSPs) and
|
|
* minimizes board-specific #ifdefs in drivers.
|
|
* @driver_data: Private pointer for driver specific info.
|
|
* @links: Links to suppliers and consumers of this device.
|
|
* @power: For device power management.
|
|
* See Documentation/driver-api/pm/devices.rst for details.
|
|
* @pm_domain: Provide callbacks that are executed during system suspend,
|
|
* hibernation, system resume and during runtime PM transitions
|
|
* along with subsystem-level and driver-level callbacks.
|
|
* @pins: For device pin management.
|
|
* See Documentation/driver-api/pinctl.rst for details.
|
|
* @msi_list: Hosts MSI descriptors
|
|
* @msi_domain: The generic MSI domain this device is using.
|
|
* @numa_node: NUMA node this device is close to.
|
|
* @dma_ops: DMA mapping operations for this device.
|
|
* @dma_mask: Dma mask (if dma'ble device).
|
|
* @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
|
|
* hardware supports 64-bit addresses for consistent allocations
|
|
* such descriptors.
|
|
* @bus_dma_mask: Mask of an upstream bridge or bus which imposes a smaller DMA
|
|
* limit than the device itself supports.
|
|
* @dma_pfn_offset: offset of DMA memory range relatively of RAM
|
|
* @dma_parms: A low level driver may set these to teach IOMMU code about
|
|
* segment limitations.
|
|
* @dma_pools: Dma pools (if dma'ble device).
|
|
* @dma_mem: Internal for coherent mem override.
|
|
* @cma_area: Contiguous memory area for dma allocations
|
|
* @archdata: For arch-specific additions.
|
|
* @of_node: Associated device tree node.
|
|
* @fwnode: Associated device node supplied by platform firmware.
|
|
* @devt: For creating the sysfs "dev".
|
|
* @id: device instance
|
|
* @devres_lock: Spinlock to protect the resource of the device.
|
|
* @devres_head: The resources list of the device.
|
|
* @knode_class: The node used to add the device to the class list.
|
|
* @class: The class of the device.
|
|
* @groups: Optional attribute groups.
|
|
* @release: Callback to free the device after all references have
|
|
* gone away. This should be set by the allocator of the
|
|
* device (i.e. the bus driver that discovered the device).
|
|
* @iommu_group: IOMMU group the device belongs to.
|
|
* @iommu_fwspec: IOMMU-specific properties supplied by firmware.
|
|
* @iommu_param: Per device generic IOMMU runtime data
|
|
*
|
|
* @offline_disabled: If set, the device is permanently online.
|
|
* @offline: Set after successful invocation of bus type's .offline().
|
|
* @of_node_reused: Set if the device-tree node is shared with an ancestor
|
|
* device.
|
|
* @state_synced: The hardware state of this device has been synced to match
|
|
* the software state of this device by calling the driver/bus
|
|
* sync_state() callback.
|
|
* @dma_coherent: this particular device is dma coherent, even if the
|
|
* architecture supports non-coherent devices.
|
|
* @dma_coherent_hint_cached: Tell the framework to try and treat the device
|
|
* as DMA coherent when working with CPU cached
|
|
* buffers.
|
|
* At the lowest level, every device in a Linux system is represented by an
|
|
* instance of struct device. The device structure contains the information
|
|
* that the device model core needs to model the system. Most subsystems,
|
|
* however, track additional information about the devices they host. As a
|
|
* result, it is rare for devices to be represented by bare device structures;
|
|
* instead, that structure, like kobject structures, is usually embedded within
|
|
* a higher-level representation of the device.
|
|
*/
|
|
struct device {
|
|
struct kobject kobj;
|
|
struct device *parent;
|
|
|
|
struct device_private *p;
|
|
|
|
const char *init_name; /* initial name of the device */
|
|
const struct device_type *type;
|
|
|
|
struct bus_type *bus; /* type of bus device is on */
|
|
struct device_driver *driver; /* which driver has allocated this
|
|
device */
|
|
void *platform_data; /* Platform specific data, device
|
|
core doesn't touch it */
|
|
void *driver_data; /* Driver data, set and get with
|
|
dev_set_drvdata/dev_get_drvdata */
|
|
#ifdef CONFIG_PROVE_LOCKING
|
|
struct mutex lockdep_mutex;
|
|
#endif
|
|
struct mutex mutex; /* mutex to synchronize calls to
|
|
* its driver.
|
|
*/
|
|
|
|
struct dev_links_info links;
|
|
struct dev_pm_info power;
|
|
struct dev_pm_domain *pm_domain;
|
|
|
|
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
|
|
struct irq_domain *msi_domain;
|
|
#endif
|
|
#ifdef CONFIG_PINCTRL
|
|
struct dev_pin_info *pins;
|
|
#endif
|
|
#ifdef CONFIG_GENERIC_MSI_IRQ
|
|
struct list_head msi_list;
|
|
#endif
|
|
|
|
const struct dma_map_ops *dma_ops;
|
|
u64 *dma_mask; /* dma mask (if dma'able device) */
|
|
u64 coherent_dma_mask;/* Like dma_mask, but for
|
|
alloc_coherent mappings as
|
|
not all hardware supports
|
|
64 bit addresses for consistent
|
|
allocations such descriptors. */
|
|
u64 bus_dma_mask; /* upstream dma_mask constraint */
|
|
unsigned long dma_pfn_offset;
|
|
|
|
struct device_dma_parameters *dma_parms;
|
|
|
|
struct list_head dma_pools; /* dma pools (if dma'ble) */
|
|
|
|
#ifdef CONFIG_DMA_DECLARE_COHERENT
|
|
struct dma_coherent_mem *dma_mem; /* internal for coherent mem
|
|
override */
|
|
#endif
|
|
#ifdef CONFIG_DMA_CMA
|
|
struct cma *cma_area; /* contiguous memory area for dma
|
|
allocations */
|
|
#endif
|
|
/* arch specific additions */
|
|
struct dev_archdata archdata;
|
|
|
|
struct device_node *of_node; /* associated device tree node */
|
|
struct fwnode_handle *fwnode; /* firmware device node */
|
|
|
|
#ifdef CONFIG_NUMA
|
|
int numa_node; /* NUMA node this device is close to */
|
|
#endif
|
|
dev_t devt; /* dev_t, creates the sysfs "dev" */
|
|
u32 id; /* device instance */
|
|
|
|
spinlock_t devres_lock;
|
|
struct list_head devres_head;
|
|
|
|
struct class *class;
|
|
const struct attribute_group **groups; /* optional groups */
|
|
|
|
void (*release)(struct device *dev);
|
|
struct iommu_group *iommu_group;
|
|
struct iommu_fwspec *iommu_fwspec;
|
|
struct iommu_param *iommu_param;
|
|
|
|
bool offline_disabled:1;
|
|
bool offline:1;
|
|
bool of_node_reused:1;
|
|
bool state_synced:1;
|
|
#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
|
|
defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
|
|
defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
|
|
bool dma_coherent:1;
|
|
#endif
|
|
#if defined(CONFIG_DMA_COHERENT_HINT_CACHED)
|
|
bool dma_coherent_hint_cached:1;
|
|
#endif
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
ANDROID_KABI_RESERVE(5);
|
|
ANDROID_KABI_RESERVE(6);
|
|
ANDROID_KABI_RESERVE(7);
|
|
ANDROID_KABI_RESERVE(8);
|
|
};
|
|
|
|
/**
|
|
* struct device_link - Device link representation.
|
|
* @supplier: The device on the supplier end of the link.
|
|
* @s_node: Hook to the supplier device's list of links to consumers.
|
|
* @consumer: The device on the consumer end of the link.
|
|
* @c_node: Hook to the consumer device's list of links to suppliers.
|
|
* @link_dev: device used to expose link details in sysfs
|
|
* @status: The state of the link (with respect to the presence of drivers).
|
|
* @flags: Link flags.
|
|
* @rpm_active: Whether or not the consumer device is runtime-PM-active.
|
|
* @kref: Count repeated addition of the same link.
|
|
* @rcu_head: An RCU head to use for deferred execution of SRCU callbacks.
|
|
* @supplier_preactivated: Supplier has been made active before consumer probe.
|
|
*/
|
|
struct device_link {
|
|
struct device *supplier;
|
|
struct list_head s_node;
|
|
struct device *consumer;
|
|
struct list_head c_node;
|
|
struct device link_dev;
|
|
enum device_link_state status;
|
|
u32 flags;
|
|
refcount_t rpm_active;
|
|
struct kref kref;
|
|
#ifdef CONFIG_SRCU
|
|
struct rcu_head rcu_head;
|
|
#endif
|
|
bool supplier_preactivated; /* Owned by consumer probe. */
|
|
|
|
ANDROID_KABI_RESERVE(1);
|
|
ANDROID_KABI_RESERVE(2);
|
|
ANDROID_KABI_RESERVE(3);
|
|
ANDROID_KABI_RESERVE(4);
|
|
};
|
|
|
|
static inline struct device *kobj_to_dev(struct kobject *kobj)
|
|
{
|
|
return container_of(kobj, struct device, kobj);
|
|
}
|
|
|
|
/**
|
|
* device_iommu_mapped - Returns true when the device DMA is translated
|
|
* by an IOMMU
|
|
* @dev: Device to perform the check on
|
|
*/
|
|
static inline bool device_iommu_mapped(struct device *dev)
|
|
{
|
|
return (dev->iommu_group != NULL);
|
|
}
|
|
|
|
/* Get the wakeup routines, which depend on struct device */
|
|
#include <linux/pm_wakeup.h>
|
|
|
|
static inline const char *dev_name(const struct device *dev)
|
|
{
|
|
/* Use the init name until the kobject becomes available */
|
|
if (dev->init_name)
|
|
return dev->init_name;
|
|
|
|
return kobject_name(&dev->kobj);
|
|
}
|
|
|
|
extern __printf(2, 3)
|
|
int dev_set_name(struct device *dev, const char *name, ...);
|
|
|
|
#ifdef CONFIG_NUMA
|
|
static inline int dev_to_node(struct device *dev)
|
|
{
|
|
return dev->numa_node;
|
|
}
|
|
static inline void set_dev_node(struct device *dev, int node)
|
|
{
|
|
dev->numa_node = node;
|
|
}
|
|
#else
|
|
static inline int dev_to_node(struct device *dev)
|
|
{
|
|
return NUMA_NO_NODE;
|
|
}
|
|
static inline void set_dev_node(struct device *dev, int node)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
static inline struct irq_domain *dev_get_msi_domain(const struct device *dev)
|
|
{
|
|
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
|
|
return dev->msi_domain;
|
|
#else
|
|
return NULL;
|
|
#endif
|
|
}
|
|
|
|
static inline void dev_set_msi_domain(struct device *dev, struct irq_domain *d)
|
|
{
|
|
#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
|
|
dev->msi_domain = d;
|
|
#endif
|
|
}
|
|
|
|
static inline void *dev_get_drvdata(const struct device *dev)
|
|
{
|
|
return dev->driver_data;
|
|
}
|
|
|
|
static inline void dev_set_drvdata(struct device *dev, void *data)
|
|
{
|
|
dev->driver_data = data;
|
|
}
|
|
|
|
static inline struct pm_subsys_data *dev_to_psd(struct device *dev)
|
|
{
|
|
return dev ? dev->power.subsys_data : NULL;
|
|
}
|
|
|
|
static inline unsigned int dev_get_uevent_suppress(const struct device *dev)
|
|
{
|
|
return dev->kobj.uevent_suppress;
|
|
}
|
|
|
|
static inline void dev_set_uevent_suppress(struct device *dev, int val)
|
|
{
|
|
dev->kobj.uevent_suppress = val;
|
|
}
|
|
|
|
static inline int device_is_registered(struct device *dev)
|
|
{
|
|
return dev->kobj.state_in_sysfs;
|
|
}
|
|
|
|
static inline void device_enable_async_suspend(struct device *dev)
|
|
{
|
|
if (!dev->power.is_prepared)
|
|
dev->power.async_suspend = true;
|
|
}
|
|
|
|
static inline void device_disable_async_suspend(struct device *dev)
|
|
{
|
|
if (!dev->power.is_prepared)
|
|
dev->power.async_suspend = false;
|
|
}
|
|
|
|
static inline bool device_async_suspend_enabled(struct device *dev)
|
|
{
|
|
return !!dev->power.async_suspend;
|
|
}
|
|
|
|
static inline bool device_pm_not_required(struct device *dev)
|
|
{
|
|
return dev->power.no_pm;
|
|
}
|
|
|
|
static inline void device_set_pm_not_required(struct device *dev)
|
|
{
|
|
dev->power.no_pm = true;
|
|
}
|
|
|
|
static inline void dev_pm_syscore_device(struct device *dev, bool val)
|
|
{
|
|
#ifdef CONFIG_PM_SLEEP
|
|
dev->power.syscore = val;
|
|
#endif
|
|
}
|
|
|
|
static inline void dev_pm_set_driver_flags(struct device *dev, u32 flags)
|
|
{
|
|
dev->power.driver_flags = flags;
|
|
}
|
|
|
|
static inline bool dev_pm_test_driver_flags(struct device *dev, u32 flags)
|
|
{
|
|
return !!(dev->power.driver_flags & flags);
|
|
}
|
|
|
|
static inline void device_lock(struct device *dev)
|
|
{
|
|
mutex_lock(&dev->mutex);
|
|
}
|
|
|
|
static inline int device_lock_interruptible(struct device *dev)
|
|
{
|
|
return mutex_lock_interruptible(&dev->mutex);
|
|
}
|
|
|
|
static inline int device_trylock(struct device *dev)
|
|
{
|
|
return mutex_trylock(&dev->mutex);
|
|
}
|
|
|
|
static inline void device_unlock(struct device *dev)
|
|
{
|
|
mutex_unlock(&dev->mutex);
|
|
}
|
|
|
|
static inline void device_lock_assert(struct device *dev)
|
|
{
|
|
lockdep_assert_held(&dev->mutex);
|
|
}
|
|
|
|
static inline struct device_node *dev_of_node(struct device *dev)
|
|
{
|
|
if (!IS_ENABLED(CONFIG_OF) || !dev)
|
|
return NULL;
|
|
return dev->of_node;
|
|
}
|
|
|
|
static inline bool dev_has_sync_state(struct device *dev)
|
|
{
|
|
if (!dev)
|
|
return false;
|
|
if (dev->driver && dev->driver->sync_state)
|
|
return true;
|
|
if (dev->bus && dev->bus->sync_state)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void driver_init(void);
|
|
|
|
/*
|
|
* High level routines for use by the bus drivers
|
|
*/
|
|
extern int __must_check device_register(struct device *dev);
|
|
extern void device_unregister(struct device *dev);
|
|
extern void device_initialize(struct device *dev);
|
|
extern int __must_check device_add(struct device *dev);
|
|
extern void device_del(struct device *dev);
|
|
extern int device_for_each_child(struct device *dev, void *data,
|
|
int (*fn)(struct device *dev, void *data));
|
|
extern int device_for_each_child_reverse(struct device *dev, void *data,
|
|
int (*fn)(struct device *dev, void *data));
|
|
extern struct device *device_find_child(struct device *dev, void *data,
|
|
int (*match)(struct device *dev, void *data));
|
|
extern struct device *device_find_child_by_name(struct device *parent,
|
|
const char *name);
|
|
extern int device_rename(struct device *dev, const char *new_name);
|
|
extern int device_move(struct device *dev, struct device *new_parent,
|
|
enum dpm_order dpm_order);
|
|
extern const char *device_get_devnode(struct device *dev,
|
|
umode_t *mode, kuid_t *uid, kgid_t *gid,
|
|
const char **tmp);
|
|
|
|
static inline bool device_supports_offline(struct device *dev)
|
|
{
|
|
return dev->bus && dev->bus->offline && dev->bus->online;
|
|
}
|
|
|
|
extern void lock_device_hotplug(void);
|
|
extern void unlock_device_hotplug(void);
|
|
extern int lock_device_hotplug_sysfs(void);
|
|
extern int trylock_device_hotplug(void);
|
|
#ifdef CONFIG_SCHED_WALT
|
|
extern void lock_device_hotplug_assert(void);
|
|
#endif
|
|
extern int device_offline(struct device *dev);
|
|
extern int device_online(struct device *dev);
|
|
extern void set_primary_fwnode(struct device *dev, struct fwnode_handle *fwnode);
|
|
extern void set_secondary_fwnode(struct device *dev, struct fwnode_handle *fwnode);
|
|
void device_set_of_node_from_dev(struct device *dev, const struct device *dev2);
|
|
void device_set_node(struct device *dev, struct fwnode_handle *fwnode);
|
|
|
|
static inline int dev_num_vf(struct device *dev)
|
|
{
|
|
if (dev->bus && dev->bus->num_vf)
|
|
return dev->bus->num_vf(dev);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Root device objects for grouping under /sys/devices
|
|
*/
|
|
extern struct device *__root_device_register(const char *name,
|
|
struct module *owner);
|
|
|
|
/* This is a macro to avoid include problems with THIS_MODULE */
|
|
#define root_device_register(name) \
|
|
__root_device_register(name, THIS_MODULE)
|
|
|
|
extern void root_device_unregister(struct device *root);
|
|
|
|
static inline void *dev_get_platdata(const struct device *dev)
|
|
{
|
|
return dev->platform_data;
|
|
}
|
|
|
|
/*
|
|
* Manual binding of a device to driver. See drivers/base/bus.c
|
|
* for information on use.
|
|
*/
|
|
extern int __must_check device_bind_driver(struct device *dev);
|
|
extern void device_release_driver(struct device *dev);
|
|
extern int __must_check device_attach(struct device *dev);
|
|
extern int __must_check driver_attach(struct device_driver *drv);
|
|
extern void device_initial_probe(struct device *dev);
|
|
extern int __must_check device_reprobe(struct device *dev);
|
|
|
|
extern bool device_is_bound(struct device *dev);
|
|
|
|
/*
|
|
* Easy functions for dynamically creating devices on the fly
|
|
*/
|
|
extern __printf(5, 0)
|
|
struct device *device_create_vargs(struct class *cls, struct device *parent,
|
|
dev_t devt, void *drvdata,
|
|
const char *fmt, va_list vargs);
|
|
extern __printf(5, 6)
|
|
struct device *device_create(struct class *cls, struct device *parent,
|
|
dev_t devt, void *drvdata,
|
|
const char *fmt, ...);
|
|
extern __printf(6, 7)
|
|
struct device *device_create_with_groups(struct class *cls,
|
|
struct device *parent, dev_t devt, void *drvdata,
|
|
const struct attribute_group **groups,
|
|
const char *fmt, ...);
|
|
extern void device_destroy(struct class *cls, dev_t devt);
|
|
|
|
extern int __must_check device_add_groups(struct device *dev,
|
|
const struct attribute_group **groups);
|
|
extern void device_remove_groups(struct device *dev,
|
|
const struct attribute_group **groups);
|
|
|
|
static inline int __must_check device_add_group(struct device *dev,
|
|
const struct attribute_group *grp)
|
|
{
|
|
const struct attribute_group *groups[] = { grp, NULL };
|
|
|
|
return device_add_groups(dev, groups);
|
|
}
|
|
|
|
static inline void device_remove_group(struct device *dev,
|
|
const struct attribute_group *grp)
|
|
{
|
|
const struct attribute_group *groups[] = { grp, NULL };
|
|
|
|
return device_remove_groups(dev, groups);
|
|
}
|
|
|
|
extern int __must_check devm_device_add_groups(struct device *dev,
|
|
const struct attribute_group **groups);
|
|
extern void devm_device_remove_groups(struct device *dev,
|
|
const struct attribute_group **groups);
|
|
extern int __must_check devm_device_add_group(struct device *dev,
|
|
const struct attribute_group *grp);
|
|
extern void devm_device_remove_group(struct device *dev,
|
|
const struct attribute_group *grp);
|
|
|
|
/*
|
|
* Platform "fixup" functions - allow the platform to have their say
|
|
* about devices and actions that the general device layer doesn't
|
|
* know about.
|
|
*/
|
|
/* Notify platform of device discovery */
|
|
extern int (*platform_notify)(struct device *dev);
|
|
|
|
extern int (*platform_notify_remove)(struct device *dev);
|
|
|
|
|
|
/*
|
|
* get_device - atomically increment the reference count for the device.
|
|
*
|
|
*/
|
|
extern struct device *get_device(struct device *dev);
|
|
extern void put_device(struct device *dev);
|
|
extern bool kill_device(struct device *dev);
|
|
|
|
#ifdef CONFIG_DEVTMPFS
|
|
extern int devtmpfs_create_node(struct device *dev);
|
|
extern int devtmpfs_delete_node(struct device *dev);
|
|
extern int devtmpfs_mount(const char *mntdir);
|
|
#else
|
|
static inline int devtmpfs_create_node(struct device *dev) { return 0; }
|
|
static inline int devtmpfs_delete_node(struct device *dev) { return 0; }
|
|
static inline int devtmpfs_mount(const char *mountpoint) { return 0; }
|
|
#endif
|
|
|
|
/* drivers/base/power/shutdown.c */
|
|
extern void device_shutdown(void);
|
|
|
|
/* debugging and troubleshooting/diagnostic helpers. */
|
|
extern const char *dev_driver_string(const struct device *dev);
|
|
|
|
/* Device links interface. */
|
|
struct device_link *device_link_add(struct device *consumer,
|
|
struct device *supplier, u32 flags);
|
|
void device_link_del(struct device_link *link);
|
|
void device_link_remove(void *consumer, struct device *supplier);
|
|
void device_links_supplier_sync_state_pause(void);
|
|
void device_links_supplier_sync_state_resume(void);
|
|
|
|
#ifndef dev_fmt
|
|
#define dev_fmt(fmt) fmt
|
|
#endif
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
|
|
__printf(3, 0) __cold
|
|
int dev_vprintk_emit(int level, const struct device *dev,
|
|
const char *fmt, va_list args);
|
|
__printf(3, 4) __cold
|
|
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...);
|
|
|
|
__printf(3, 4) __cold
|
|
void dev_printk(const char *level, const struct device *dev,
|
|
const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_emerg(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_alert(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_crit(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_err(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_warn(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_notice(const struct device *dev, const char *fmt, ...);
|
|
__printf(2, 3) __cold
|
|
void _dev_info(const struct device *dev, const char *fmt, ...);
|
|
|
|
#else
|
|
|
|
static inline __printf(3, 0)
|
|
int dev_vprintk_emit(int level, const struct device *dev,
|
|
const char *fmt, va_list args)
|
|
{ return 0; }
|
|
static inline __printf(3, 4)
|
|
int dev_printk_emit(int level, const struct device *dev, const char *fmt, ...)
|
|
{ return 0; }
|
|
|
|
static inline void __dev_printk(const char *level, const struct device *dev,
|
|
struct va_format *vaf)
|
|
{}
|
|
static inline __printf(3, 4)
|
|
void dev_printk(const char *level, const struct device *dev,
|
|
const char *fmt, ...)
|
|
{}
|
|
|
|
static inline __printf(2, 3)
|
|
void _dev_emerg(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_crit(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_alert(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_err(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_warn(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_notice(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
static inline __printf(2, 3)
|
|
void _dev_info(const struct device *dev, const char *fmt, ...)
|
|
{}
|
|
|
|
#endif
|
|
|
|
/*
|
|
* #defines for all the dev_<level> macros to prefix with whatever
|
|
* possible use of #define dev_fmt(fmt) ...
|
|
*/
|
|
|
|
#define dev_emerg(dev, fmt, ...) \
|
|
_dev_emerg(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_crit(dev, fmt, ...) \
|
|
_dev_crit(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_alert(dev, fmt, ...) \
|
|
_dev_alert(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_err(dev, fmt, ...) \
|
|
_dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_warn(dev, fmt, ...) \
|
|
_dev_warn(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_notice(dev, fmt, ...) \
|
|
_dev_notice(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#define dev_info(dev, fmt, ...) \
|
|
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
|
|
#if defined(CONFIG_DYNAMIC_DEBUG) || \
|
|
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#elif defined(DEBUG)
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__)
|
|
#else
|
|
#define dev_dbg(dev, fmt, ...) \
|
|
({ \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
})
|
|
#endif
|
|
|
|
#ifdef CONFIG_PRINTK
|
|
#define dev_level_once(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
static bool __print_once __read_mostly; \
|
|
\
|
|
if (!__print_once) { \
|
|
__print_once = true; \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} \
|
|
} while (0)
|
|
#else
|
|
#define dev_level_once(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
if (0) \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#define dev_emerg_once(dev, fmt, ...) \
|
|
dev_level_once(dev_emerg, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_alert_once(dev, fmt, ...) \
|
|
dev_level_once(dev_alert, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_crit_once(dev, fmt, ...) \
|
|
dev_level_once(dev_crit, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_err_once(dev, fmt, ...) \
|
|
dev_level_once(dev_err, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_warn_once(dev, fmt, ...) \
|
|
dev_level_once(dev_warn, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_notice_once(dev, fmt, ...) \
|
|
dev_level_once(dev_notice, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_info_once(dev, fmt, ...) \
|
|
dev_level_once(dev_info, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_dbg_once(dev, fmt, ...) \
|
|
dev_level_once(dev_dbg, dev, fmt, ##__VA_ARGS__)
|
|
|
|
#define dev_level_ratelimited(dev_level, dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
if (__ratelimit(&_rs)) \
|
|
dev_level(dev, fmt, ##__VA_ARGS__); \
|
|
} while (0)
|
|
|
|
#define dev_emerg_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_emerg, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_alert_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_alert, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_crit_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_crit, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_err_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_err, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_warn_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_warn, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_notice_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_notice, dev, fmt, ##__VA_ARGS__)
|
|
#define dev_info_ratelimited(dev, fmt, ...) \
|
|
dev_level_ratelimited(dev_info, dev, fmt, ##__VA_ARGS__)
|
|
#if defined(CONFIG_DYNAMIC_DEBUG) || \
|
|
(defined(CONFIG_DYNAMIC_DEBUG_CORE) && defined(DYNAMIC_DEBUG_MODULE))
|
|
/* descriptor check is first to prevent flooding with "callbacks suppressed" */
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt); \
|
|
if (DYNAMIC_DEBUG_BRANCH(descriptor) && \
|
|
__ratelimit(&_rs)) \
|
|
__dynamic_dev_dbg(&descriptor, dev, dev_fmt(fmt), \
|
|
##__VA_ARGS__); \
|
|
} while (0)
|
|
#elif defined(DEBUG)
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
static DEFINE_RATELIMIT_STATE(_rs, \
|
|
DEFAULT_RATELIMIT_INTERVAL, \
|
|
DEFAULT_RATELIMIT_BURST); \
|
|
if (__ratelimit(&_rs)) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
} while (0)
|
|
#else
|
|
#define dev_dbg_ratelimited(dev, fmt, ...) \
|
|
do { \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
} while (0)
|
|
#endif
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
#define dev_vdbg dev_dbg
|
|
#else
|
|
#define dev_vdbg(dev, fmt, ...) \
|
|
({ \
|
|
if (0) \
|
|
dev_printk(KERN_DEBUG, dev, dev_fmt(fmt), ##__VA_ARGS__); \
|
|
})
|
|
#endif
|
|
|
|
/*
|
|
* dev_WARN*() acts like dev_printk(), but with the key difference of
|
|
* using WARN/WARN_ONCE to include file/line information and a backtrace.
|
|
*/
|
|
#define dev_WARN(dev, format, arg...) \
|
|
WARN(1, "%s %s: " format, dev_driver_string(dev), dev_name(dev), ## arg);
|
|
|
|
#define dev_WARN_ONCE(dev, condition, format, arg...) \
|
|
WARN_ONCE(condition, "%s %s: " format, \
|
|
dev_driver_string(dev), dev_name(dev), ## arg)
|
|
|
|
extern __printf(3, 4)
|
|
int dev_err_probe(const struct device *dev, int err, const char *fmt, ...);
|
|
|
|
/* Create alias, so I can be autoloaded. */
|
|
#define MODULE_ALIAS_CHARDEV(major,minor) \
|
|
MODULE_ALIAS("char-major-" __stringify(major) "-" __stringify(minor))
|
|
#define MODULE_ALIAS_CHARDEV_MAJOR(major) \
|
|
MODULE_ALIAS("char-major-" __stringify(major) "-*")
|
|
|
|
#ifdef CONFIG_SYSFS_DEPRECATED
|
|
extern long sysfs_deprecated;
|
|
#else
|
|
#define sysfs_deprecated 0
|
|
#endif
|
|
|
|
/**
|
|
* module_driver() - Helper macro for drivers that don't do anything
|
|
* special in module init/exit. This eliminates a lot of boilerplate.
|
|
* Each module may only use this macro once, and calling it replaces
|
|
* module_init() and module_exit().
|
|
*
|
|
* @__driver: driver name
|
|
* @__register: register function for this driver type
|
|
* @__unregister: unregister function for this driver type
|
|
* @...: Additional arguments to be passed to __register and __unregister.
|
|
*
|
|
* Use this macro to construct bus specific macros for registering
|
|
* drivers, and do not use it on its own.
|
|
*/
|
|
#define module_driver(__driver, __register, __unregister, ...) \
|
|
static int __init __driver##_init(void) \
|
|
{ \
|
|
return __register(&(__driver) , ##__VA_ARGS__); \
|
|
} \
|
|
module_init(__driver##_init); \
|
|
static void __exit __driver##_exit(void) \
|
|
{ \
|
|
__unregister(&(__driver) , ##__VA_ARGS__); \
|
|
} \
|
|
module_exit(__driver##_exit);
|
|
|
|
/**
|
|
* builtin_driver() - Helper macro for drivers that don't do anything
|
|
* special in init and have no exit. This eliminates some boilerplate.
|
|
* Each driver may only use this macro once, and calling it replaces
|
|
* device_initcall (or in some cases, the legacy __initcall). This is
|
|
* meant to be a direct parallel of module_driver() above but without
|
|
* the __exit stuff that is not used for builtin cases.
|
|
*
|
|
* @__driver: driver name
|
|
* @__register: register function for this driver type
|
|
* @...: Additional arguments to be passed to __register
|
|
*
|
|
* Use this macro to construct bus specific macros for registering
|
|
* drivers, and do not use it on its own.
|
|
*/
|
|
#define builtin_driver(__driver, __register, ...) \
|
|
static int __init __driver##_init(void) \
|
|
{ \
|
|
return __register(&(__driver) , ##__VA_ARGS__); \
|
|
} \
|
|
device_initcall(__driver##_init);
|
|
|
|
#endif /* _DEVICE_H_ */
|