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2b14290078
android_kernel_xiaomi_sm8350/drivers/scsi
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Alan Jenkins 2b14290078 [SCSI] extend the last_sector_bug flag to cover more sectors 
The last_sector_bug flag was added to work around a bug in certain usb
cardreaders, where they would crash if a multiple sector read included the
last sector. The original implementation avoids this by e.g. splitting an 8
sector read which includes the last sector into a 7 sector read, and a single
sector read for the last sector.  The flag is enabled for all USB devices.

This revealed a second bug in other usb cardreaders, which crash when they
get a multiple sector read which stops 1 sector short of the last sector.
Affected hardware includes the Kingston "MobileLite" external USB cardreader
and the internal USB cardreader on the Asus EeePC.

Extend the last_sector_bug workaround to ensure that any access which touches
the last 8 hardware sectors of the device is a single sector long.  Requests
are shrunk as necessary to meet this constraint.

This gives us a safety margin against potential unknown or future bugs
affecting multi-sector access to the end of the device.  The two known bugs
only affect the last 2 sectors.  However, they suggest that these devices
are prone to fencepost errors and that multi-sector access to the end of the
device is not well tested.  Popular OS's use multi-sector accesses, but they
rarely read the last few sectors.  Linux (with udev & vol_id) automatically
reads sectors from the end of the device on insertion.  It is assumed that
single sector accesses are more thoroughly tested during development.

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-07-27 10:16:13 -04:00
..
aacraid Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
aic7xxx
aic7xxx_old
aic94xx aic94xx: treat firmware data as const 2008-07-10 14:26:15 +01:00
arcmsr
arm [ARM] rpc: acornscsi: update to new style ecard driver 2008-07-03 14:25:57 +01:00
device_handler [SCSI] scsi_dh: create lookup cache 2008-07-26 15:14:54 -04:00
dpt [SCSI] dpt_i2o: Add PROC_IA64 define 2008-06-15 11:12:20 -05:00
ibmvscsi [SCSI] ibmvfc: Update driver version to 1.0.1 2008-07-26 15:14:59 -04:00
libsas
lpfc [SCSI] lpfc 8.2.7 : Update version to 8.2.7 2008-07-12 08:22:29 -05:00
megaraid megaraid: BKL pushdown 2008-06-20 14:05:58 -06:00
pcmcia
qla2xxx [SCSI] qla2xxx: Update version number to 8.02.01-k6. 2008-07-26 15:31:47 -04:00
qla4xxx [SCSI] qla4xxx: fix queue depth setting 2008-07-26 15:14:49 -04:00
sym53c8xx_2 [SCSI] sym53c8xx: free luntbl in sym_hcb_free 2008-07-26 15:14:56 -04:00
.gitignore
3w-9xxx.c [SCSI] 3w-9xxx: add MSI support and misc fixes 2008-07-26 15:15:00 -04:00
3w-9xxx.h [SCSI] 3w-9xxx: add MSI support and misc fixes 2008-07-26 15:15:00 -04:00
3w-xxxx.c Add a bunch of cycle_kernel_lock() calls 2008-06-20 14:05:53 -06:00
3w-xxxx.h
53c700_d.h_shipped
53c700.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
53c700.h
53c700.scr
a100u2w.c Don't crash on IOMMU overflow in A100U2W driver 2008-07-15 14:30:56 -07:00
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c
aha152x.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
aha152x.h
aha1542.c
aha1542.h
aha1740.c
aha1740.h
aic7xxx_old.c
atari_dma_emul.c
atari_NCR5380.c
atari_scsi.c
atari_scsi.h
atp870u.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
atp870u.h
BusLogic.c
BusLogic.h
bvme6000_scsi.c
ch.c [SCSI] ch: fix ch_remove oops 2008-07-26 15:17:47 -04:00
constants.c [SCSI] add support for variable length extended commands 2008-05-02 11:33:25 -05:00
dc395x.c
dc395x.h
dmx3191d.c
dpt_i2o.c device create: scsi: convert device_create to device_create_drvdata 2008-07-21 21:54:44 -07:00
dpti.h drivers/scsi/dpt_i2o.c: fix build on alpha 2008-05-08 10:46:56 -07:00
dtc.c
dtc.h
eata_generic.h
eata_pio.c
eata_pio.h
eata.c
esp_scsi.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
esp_scsi.h [SCSI] esp: tidy up target reference counting 2008-06-25 12:36:13 -05:00
fd_mcs.c
fdomain.c
fdomain.h
FlashPoint.c
g_NCR5380_mmio.c
g_NCR5380.c
g_NCR5380.h
gdth_ioctl.h
gdth_proc.c
gdth_proc.h
gdth.c gdth: cdev lock_kernel() pushdown 2008-06-20 14:05:49 -06:00
gdth.h
gvp11.c
gvp11.h
hosts.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
hptiop.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
hptiop.h
ibmmca.c
ide-scsi.c ide-scsi: remove kmalloced struct request 2008-07-24 22:53:35 +02:00
imm.c
imm.h
in2000.c
in2000.h
initio.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
initio.h
ipr.c [SCSI] ipr: Fix HDIO_GET_IDENTITY oops for SATA devices 2008-07-11 13:45:48 -05:00
ipr.h
ips.c
ips.h
iscsi_tcp.c [SCSI] libiscsi, iscsi_tcp, ib_iser: fix setting of can_queue with old tools. 2008-07-12 08:22:29 -05:00
iscsi_tcp.h [SCSI] iscsi_tcp: handle iscsi_cmd_task rename 2008-07-12 08:22:20 -05:00
jazz_esp.c
Kconfig [SCSI] sd: Support for SCSI disk (SBC) Data Integrity Field 2008-07-26 15:14:56 -04:00
lasi700.c
libiscsi.c [SCSI] libiscsi, iscsi_tcp, ib_iser: fix setting of can_queue with old tools. 2008-07-12 08:22:29 -05:00
libsrp.c
mac53c94.c
mac53c94.h
mac_esp.c MODULE_LICENSE expects "GPL v2", not "GPLv2" 2008-05-21 16:56:00 -07:00
mac_scsi.c
mac_scsi.h
Makefile [SCSI] sd: Support for SCSI disk (SBC) Data Integrity Field 2008-07-26 15:14:56 -04:00
megaraid.c Add a bunch of cycle_kernel_lock() calls 2008-06-20 14:05:53 -06:00
megaraid.h
mesh.c [SCSI] SCSI: remove dev->power.power_state from mesh driver 2008-06-05 09:23:44 -05:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvsas.c
ncr53c8xx.c
ncr53c8xx.h
NCR53c406a.c
NCR5380.c
NCR5380.h
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
nsp32_debug.c
nsp32_io.h
nsp32.c
nsp32.h
osst_detect.h
osst_options.h
osst.c Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
osst.h
pas16.c
pas16.h
ppa.c
ppa.h
ps3rom.c
ql1040_fw.h
ql1280_fw.h
ql12160_fw.h
qla1280.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
qla1280.h
qlogicfas408.c
qlogicfas408.h
qlogicfas.c
qlogicpti_asm.c
qlogicpti.c
qlogicpti.h
raid_class.c
script_asm.pl
scsi_debug.c [SCSI] scsi_debug: add support for rotation speed 2008-07-12 08:22:30 -05:00
scsi_devinfo.c
scsi_error.c [SCSI] scsi_eh_prep_cmnd should save scmd->underflow 2008-07-26 15:14:56 -04:00
scsi_ioctl.c
scsi_lib_dma.c
scsi_lib.c [SCSI] scsi_lib: use blk_rq_tagged in scsi_request_fn 2008-07-26 15:14:59 -04:00
scsi_logging.h
scsi_module.c
scsi_netlink.c
scsi_priv.h [SCSI] Support devices with protection information 2008-07-26 15:14:55 -04:00
scsi_proc.c
scsi_sas_internal.h
scsi_scan.c [SCSI] scsi_scan.c: Release mutex in error handling code 2008-07-26 15:14:56 -04:00
scsi_sysctl.c
scsi_sysfs.c [SCSI] Host protection capabilities 2008-07-26 15:14:54 -04:00
scsi_tgt_if.c scsi-tgt: BKL pushdown 2008-07-02 15:06:25 -06:00
scsi_tgt_lib.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
scsi_tgt_priv.h
scsi_transport_api.h
scsi_transport_fc_internal.h
scsi_transport_fc.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
scsi_transport_iscsi.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
scsi_transport_sas.c
scsi_transport_spi.c
scsi_transport_srp_internal.h
scsi_transport_srp.c
scsi_typedefs.h
scsi_wait_scan.c
scsi.c [SCSI] Support devices with protection information 2008-07-26 15:14:55 -04:00
scsi.h
scsicam.c
sd_dif.c [SCSI] sd: Support for SCSI disk (SBC) Data Integrity Field 2008-07-26 15:14:56 -04:00
sd.c [SCSI] extend the last_sector_bug flag to cover more sectors 2008-07-27 10:16:13 -04:00
sd.h [SCSI] extend the last_sector_bug flag to cover more sectors 2008-07-27 10:16:13 -04:00
ses.c [SCSI] ses: Fix timeout 2008-06-24 12:02:27 -05:00
sg.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
sgiwd93.c
sim710.c
sni_53c710.c
sr_ioctl.c
sr_vendor.c
sr.c scsi: sr avoids useless buffer allocation 2008-07-04 09:52:14 +02:00
sr.h
st_options.h
st.c [SCSI] st: Remove bogus memset 2008-07-26 15:14:47 -04:00
st.h
stex.c [SCSI] stex: fix queue depth setting 2008-07-26 15:14:49 -04:00
sun3_NCR5380.c
sun3_scsi_vme.c
sun3_scsi.c
sun3_scsi.h
sun3x_esp.c
sun_esp.c PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
sym53c416.c
sym53c416.h
t128.c
t128.h
tmscsim.c
tmscsim.h
u14-34f.c [SCSI] u14-34f: Fix 32bit only problem 2008-05-02 13:18:06 -05:00
ultrastor.c
ultrastor.h
wd33c93.c
wd33c93.h
wd7000.c
zalon.c
zorro7xx.c