Commit Graph

145346 Commits

Author SHA1 Message Date
Mel Gorman
af3e4aca47 powerpc: Do not assert pte_locked for hugepage PTE entries
With CONFIG_DEBUG_VM, an assertion is made when changing the protection
flags of a PTE that the PTE is locked. Huge pages use a different pagetable
format and the assertion is bogus and will always trigger with a bug looking
something like

 Unable to handle kernel paging request for data at address 0xf1a00235800006f8
 Faulting instruction address: 0xc000000000034a80
 Oops: Kernel access of bad area, sig: 11 [#1]
 SMP NR_CPUS=32 NUMA Maple
 Modules linked in: dm_snapshot dm_mirror dm_region_hash
  dm_log dm_mod loop evdev ext3 jbd mbcache sg sd_mod ide_pci_generic
  pata_amd ata_generic ipr libata tg3 libphy scsi_mod windfarm_pid
  windfarm_smu_sat windfarm_max6690_sensor windfarm_lm75_sensor
  windfarm_cpufreq_clamp windfarm_core i2c_powermac
 NIP: c000000000034a80 LR: c000000000034b18 CTR: 0000000000000003
 REGS: c000000003037600 TRAP: 0300   Not tainted (2.6.30-rc3-autokern1)
 MSR: 9000000000009032 <EE,ME,IR,DR>  CR: 28002484  XER: 200fffff
 DAR: f1a00235800006f8, DSISR: 0000000040010000
 TASK = c0000002e54cc740[2960] 'map_high_trunca' THREAD: c000000003034000 CPU: 2
 GPR00: 4000000000000000 c000000003037880 c000000000895d30 c0000002e5a2e500
 GPR04: 00000000a0000000 c0000002edc40880 0000005700000393 0000000000000001
 GPR08: f000000011ac0000 01a00235800006e8 00000000000000f5 f1a00235800006e8
 GPR12: 0000000028000484 c0000000008dd780 0000000000001000 0000000000000000
 GPR16: fffffffffffff000 0000000000000000 00000000a0000000 c000000003037a20
 GPR20: c0000002e5f4ece8 0000000000001000 c0000002edc40880 0000000000000000
 GPR24: c0000002e5f4ece8 0000000000000000 00000000a0000000 c0000002e5f4ece8
 GPR28: 0000005700000393 c0000002e5a2e500 00000000a0000000 c000000003037880
 NIP [c000000000034a80] .assert_pte_locked+0xa4/0xd0
 LR [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4
 Call Trace:
 [c000000003037880] [c000000003037990] 0xc000000003037990 (unreliable)
 [c000000003037910] [c000000000034b18] .ptep_set_access_flags+0x6c/0xb4
 [c0000000030379b0] [c00000000014bef8] .hugetlb_cow+0x124/0x674
 [c000000003037b00] [c00000000014c930] .hugetlb_fault+0x4e8/0x6f8
 [c000000003037c00] [c00000000013443c] .handle_mm_fault+0xac/0x828
 [c000000003037cf0] [c0000000000340a8] .do_page_fault+0x39c/0x584
 [c000000003037e30] [c0000000000057b0] handle_page_fault+0x20/0x5c
 Instruction dump:
 7d29582a 7d200074 7800d182 0b000000 3c004000 3960ffff 780007c6 796b00c4
 7d290214 7929a302 1d290068 7d6b4a14 <800b0010> 7c000074 7800d182 0b000000

This patch fixes the problem by not asseting the PTE is locked for VMAs
backed by huge pages.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2009-05-18 15:19:04 +10:00
Wang Tinggong
705efc3b03 Doc: fixed descriptions on /proc/sys/net/core/* and /proc/sys/net/unix/*
Signed-off-by: Wang Tinggong <wangtinggong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:19:31 -07:00
roel kluin
d77dd8d27e Neterion: *FIFO1_DMA_ERR set twice, should 2nd be *FIFO2_DMA_ERR?
FIFO1_DMA_ERR is set twice, the second should be FIFO2_DMA_ERR.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Ram Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:18:05 -07:00
Gabriel Paubert
eb0519b5a1 mv643xx_eth: fix PPC DMA breakage
After 2.6.29, PPC no more admits passing NULL to the dev parameter of
the DMA API. The result is a BUG followed by solid lock-up when the 
mv643xx_eth driver brings an interface up. The following patch makes 
the driver work on my Pegasos again; it is mostly a search and replace 
of NULL by mp->dev->dev.parent in dma allocation/freeing/mapping/unmapping
functions.

Signed-off-by: Gabriel Paubert <paubert@iram.es>
Acked-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:16:47 -07:00
Stephen Hemminger
4cd6fe1c64 bonding: fix link down handling in 802.3ad mode
One of the purposes of bonding is to allow for redundant links, and failover
correctly if the cable is pulled. If all the members of a bonded device have
no carrier present, the bonded device itself needs to report no carrier present
to user space so management tools (like routing daemons) can respond.

Bonding in 802.3ad mode does not work correctly for this because it incorrectly
chooses a link that is down as a possible aggregator.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:15:54 -07:00
David S. Miller
ffc7a86494 Merge branch 'linux-2.6.30.y' of git://git.kernel.org/pub/scm/linux/kernel/git/inaky/wimax 2009-05-17 21:14:33 -07:00
Stephen Hemminger
4f0611af47 bridge: fix initial packet flood if !STP
If bridge is configured with no STP and forwarding delay of 0 (which
is typical for virtualization) then when link starts it will flood all
packets for the first 20 seconds.

This bug was introduced by a combination of earlier changes:
  * forwarding database uses hold time of zero to indicate
    user wants to always flood packets
  * optimzation of the case of forwarding delay of 0 avoids the initial
    timer tick

The fix is to just skip all the topology change detection code if
kernel STP is not being used.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:12:55 -07:00
Stephen Hemminger
a598f6aebe bridge: relay bridge multicast pkgs if !STP
Currently the bridge catches all STP packets; even if STP is turned
off.  This prevents other systems (which do have STP turned on)
from being able to detect loops in the network.

With this patch, if STP is off, then any packet sent to the STP
multicast group address is forwarded to all ports.

Based on earlier patch by Joakim Tjernlund with changes
to go through forwarding (not local chain), and optimization
that only last octet needs to be checked.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:12:54 -07:00
Ralf Baechle
a8f492c6ac NET: Meth: Fix unsafe mix of irq and non-irq spinlocks.
Mixing of normal and irq spinlocks results in the following lockdep messages
on bootup on IP32:

[...]
Sending DHCP requests .
======================================================
[ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ]
2.6.30-rc5-00164-g41baeef #30
------------------------------------------------------
swapper/1 [HC0[0]:SC0[1]:HE0:SE0] is trying to acquire:
 (&priv->meth_lock){+.+...}, at: [<ffffffff8026388c>] meth_tx+0x48/0x43c

and this task is already holding:
 (_xmit_ETHER#2){+.-...}, at: [<ffffffff802d3a00>] __qdisc_run+0x118/0x30c
which would create a new lock dependency:
 (_xmit_ETHER#2){+.-...} -> (&priv->meth_lock){+.+...}

but this new dependency connects a SOFTIRQ-irq-safe lock:
 (_xmit_ETHER#2){+.-...}
... which became SOFTIRQ-irq-safe at:
  [<ffffffff80061458>] __lock_acquire+0x784/0x1a14
  [<ffffffff800627e0>] lock_acquire+0xf8/0x150
  [<ffffffff800128d0>] _spin_lock+0x30/0x44
  [<ffffffff802d2b88>] dev_watchdog+0x70/0x398
  [<ffffffff800433b8>] run_timer_softirq+0x1a8/0x248
  [<ffffffff8003da5c>] __do_softirq+0xec/0x208
  [<ffffffff8003dbd8>] do_softirq+0x60/0xe4
  [<ffffffff8003dda0>] irq_exit+0x54/0x9c
  [<ffffffff80004420>] ret_from_irq+0x0/0x4
  [<ffffffff80004720>] r4k_wait+0x20/0x40
  [<ffffffff80015418>] cpu_idle+0x30/0x60
  [<ffffffff804cd934>] start_kernel+0x3ec/0x404

to a SOFTIRQ-irq-unsafe lock:
 (&priv->meth_lock){+.+...}
... which became SOFTIRQ-irq-unsafe at:
...  [<ffffffff800614f8>] __lock_acquire+0x824/0x1a14
  [<ffffffff800627e0>] lock_acquire+0xf8/0x150
  [<ffffffff800128d0>] _spin_lock+0x30/0x44
  [<ffffffff80263f20>] meth_reset+0x118/0x2d8
  [<ffffffff8026424c>] meth_open+0x28/0x140
  [<ffffffff802c1ae8>] dev_open+0xe0/0x18c
  [<ffffffff802c1268>] dev_change_flags+0xd8/0x1d4
  [<ffffffff804e7770>] ip_auto_config+0x1d4/0xf28
  [<ffffffff80012e68>] do_one_initcall+0x58/0x170
  [<ffffffff804cd190>] kernel_init+0x98/0x104
  [<ffffffff8001520c>] kernel_thread_helper+0x10/0x18

other info that might help us debug this:

2 locks held by swapper/1:
 #0:  (rcu_read_lock){.+.+..}, at: [<ffffffff802c0954>] dev_queue_xmit+0x1e0/0x4b0
 #1:  (_xmit_ETHER#2){+.-...}, at: [<ffffffff802d3a00>] __qdisc_run+0x118/0x30c

the SOFTIRQ-irq-safe lock's dependencies:
-> (_xmit_ETHER#2){+.-...} ops: 0 {
   HARDIRQ-ON-W at:
                        [<ffffffff800614d0>] __lock_acquire+0x7fc/0x1a14
                        [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                        [<ffffffff800128d0>] _spin_lock+0x30/0x44
                        [<ffffffff802d2b88>] dev_watchdog+0x70/0x398
                        [<ffffffff800433b8>] run_timer_softirq+0x1a8/0x248
                        [<ffffffff8003da5c>] __do_softirq+0xec/0x208
                        [<ffffffff8003dbd8>] do_softirq+0x60/0xe4
                        [<ffffffff8003dda0>] irq_exit+0x54/0x9c
                        [<ffffffff80004420>] ret_from_irq+0x0/0x4
                        [<ffffffff80004720>] r4k_wait+0x20/0x40
                        [<ffffffff80015418>] cpu_idle+0x30/0x60
                        [<ffffffff804cd934>] start_kernel+0x3ec/0x404
   IN-SOFTIRQ-W at:
                        [<ffffffff80061458>] __lock_acquire+0x784/0x1a14
                        [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                        [<ffffffff800128d0>] _spin_lock+0x30/0x44
                        [<ffffffff802d2b88>] dev_watchdog+0x70/0x398
                        [<ffffffff800433b8>] run_timer_softirq+0x1a8/0x248
                        [<ffffffff8003da5c>] __do_softirq+0xec/0x208
                        [<ffffffff8003dbd8>] do_softirq+0x60/0xe4
                        [<ffffffff8003dda0>] irq_exit+0x54/0x9c
                        [<ffffffff80004420>] ret_from_irq+0x0/0x4
                        [<ffffffff80004720>] r4k_wait+0x20/0x40
                        [<ffffffff80015418>] cpu_idle+0x30/0x60
                        [<ffffffff804cd934>] start_kernel+0x3ec/0x404
   INITIAL USE at:
                       [<ffffffff80061570>] __lock_acquire+0x89c/0x1a14
                       [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                       [<ffffffff800128d0>] _spin_lock+0x30/0x44
                       [<ffffffff802d2b88>] dev_watchdog+0x70/0x398
                       [<ffffffff800433b8>] run_timer_softirq+0x1a8/0x248
                       [<ffffffff8003da5c>] __do_softirq+0xec/0x208
                       [<ffffffff8003dbd8>] do_softirq+0x60/0xe4
                       [<ffffffff8003dda0>] irq_exit+0x54/0x9c
                       [<ffffffff80004420>] ret_from_irq+0x0/0x4
                       [<ffffffff80004720>] r4k_wait+0x20/0x40
                       [<ffffffff80015418>] cpu_idle+0x30/0x60
                       [<ffffffff804cd934>] start_kernel+0x3ec/0x404
 }
 ... key      at: [<ffffffff80cf93f0>] netdev_xmit_lock_key+0x8/0x1c8

the SOFTIRQ-irq-unsafe lock's dependencies:
-> (&priv->meth_lock){+.+...} ops: 0 {
   HARDIRQ-ON-W at:
                        [<ffffffff800614d0>] __lock_acquire+0x7fc/0x1a14
                        [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                        [<ffffffff800128d0>] _spin_lock+0x30/0x44
                        [<ffffffff80263f20>] meth_reset+0x118/0x2d8
                        [<ffffffff8026424c>] meth_open+0x28/0x140
                        [<ffffffff802c1ae8>] dev_open+0xe0/0x18c
                        [<ffffffff802c1268>] dev_change_flags+0xd8/0x1d4
                        [<ffffffff804e7770>] ip_auto_config+0x1d4/0xf28
                        [<ffffffff80012e68>] do_one_initcall+0x58/0x170
                        [<ffffffff804cd190>] kernel_init+0x98/0x104
                        [<ffffffff8001520c>] kernel_thread_helper+0x10/0x18
   SOFTIRQ-ON-W at:
                        [<ffffffff800614f8>] __lock_acquire+0x824/0x1a14
                        [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                        [<ffffffff800128d0>] _spin_lock+0x30/0x44
                        [<ffffffff80263f20>] meth_reset+0x118/0x2d8
                        [<ffffffff8026424c>] meth_open+0x28/0x140
                        [<ffffffff802c1ae8>] dev_open+0xe0/0x18c
                        [<ffffffff802c1268>] dev_change_flags+0xd8/0x1d4
                        [<ffffffff804e7770>] ip_auto_config+0x1d4/0xf28
                        [<ffffffff80012e68>] do_one_initcall+0x58/0x170
                        [<ffffffff804cd190>] kernel_init+0x98/0x104
                        [<ffffffff8001520c>] kernel_thread_helper+0x10/0x18
   INITIAL USE at:
                       [<ffffffff80061570>] __lock_acquire+0x89c/0x1a14
                       [<ffffffff800627e0>] lock_acquire+0xf8/0x150
                       [<ffffffff800128d0>] _spin_lock+0x30/0x44
                       [<ffffffff80263f20>] meth_reset+0x118/0x2d8
                       [<ffffffff8026424c>] meth_open+0x28/0x140
                       [<ffffffff802c1ae8>] dev_open+0xe0/0x18c
                       [<ffffffff802c1268>] dev_change_flags+0xd8/0x1d4
                       [<ffffffff804e7770>] ip_auto_config+0x1d4/0xf28
                       [<ffffffff80012e68>] do_one_initcall+0x58/0x170
                       [<ffffffff804cd190>] kernel_init+0x98/0x104
                       [<ffffffff8001520c>] kernel_thread_helper+0x10/0x18
 }
 ... key      at: [<ffffffff80cf6ce8>] __key.32424+0x0/0x8

stack backtrace:
Call Trace:
[<ffffffff8000ed0c>] dump_stack+0x8/0x34
[<ffffffff80060b74>] check_usage+0x470/0x4a0
[<ffffffff80060c34>] check_irq_usage+0x90/0x130
[<ffffffff80061f78>] __lock_acquire+0x12a4/0x1a14
[<ffffffff800627e0>] lock_acquire+0xf8/0x150
[<ffffffff80012a0c>] _spin_lock_irqsave+0x60/0x84
[<ffffffff8026388c>] meth_tx+0x48/0x43c
[<ffffffff802d3a38>] __qdisc_run+0x150/0x30c
[<ffffffff802c0aa8>] dev_queue_xmit+0x334/0x4b0
[<ffffffff804e7e6c>] ip_auto_config+0x8d0/0xf28
[<ffffffff80012e68>] do_one_initcall+0x58/0x170
[<ffffffff804cd190>] kernel_init+0x98/0x104
[<ffffffff8001520c>] kernel_thread_helper+0x10/0x18

..... timed out!
IP-Config: Retrying forever (NFS root)...
Sending DHCP requests ., OK
[...]

Fixed by converting all locks to irq locks.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Tested-by: Andrew Randrianasulu <randrik_a@yahoo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 21:11:36 -07:00
Yevgeny Petrilin
72876a6034 mlx4_en: Fix not deleted napi structures
Napi structures are being created each time we open a port, but when
the port is closed the napi structure is only disabled but not removed.
This bug caused hang while removing the driver.

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 20:48:59 -07:00
Chris Friesen
2513dfb83f ipconfig: handle case of delayed DHCP server
If a DHCP server is delayed, it's possible for the client to receive the 
DHCPOFFER after it has already sent out a new DHCPDISCOVER message from 
a second interface.  The client then sends out a DHCPREQUEST from the 
second interface, but the server doesn't recognize the device and 
rejects the request.

This patch simply tracks the current device being configured and throws 
away the OFFER if it is not intended for the current device.  A more 
sophisticated approach would be to put the OFFER information into the 
struct ic_device rather than storing it globally.

Signed-off-by: Chris Friesen <cfriesen@nortel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 20:39:33 -07:00
Pavel Emelyanov
5e392739d6 netpoll: don't dereference NULL dev from np
It looks like the dev in netpoll_poll can be NULL - at lease it's
checked at the function beginning. Thus the dev->netde_ops dereference
looks dangerous.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17 20:37:55 -07:00
Toshiyuki Okajima
22ef37eed6 page-writeback: fix the calculation of the oldest_jif in wb_kupdate()
wb_kupdate() function has a bug on linux-2.6.30-rc5.  This bug causes
generic_sync_sb_inodes() to start to write inodes back much earlier than
our expectations because it miscalculates oldest_jif in wb_kupdate().

This bug was introduced in 704503d836
('mm: fix proc_dointvec_userhz_jiffies "breakage"').

Signed-off-by: Toshiyuki Okajima <toshi.okajima@jp.fujitsu.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-17 16:36:11 -07:00
Linus Torvalds
cd208bcc7c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: padlock - Revert aes-all alias to aes
  crypto: api - Fix algorithm module auto-loading
  crypto: eseqiv - Fix IV generation for sync algorithms
  crypto: ixp4xx - check firmware for crypto support
2009-05-17 15:48:05 -07:00
David S. Miller
74392592bb Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-05-17 11:55:57 -07:00
Linus Torvalds
86460103c4 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: check sysdev_suspend(PMSG_FREEZE) return value
2009-05-17 11:46:22 -07:00
Jeff Mahoney
b83674c0da reiserfs: fixup perms when xattrs are disabled
This adds CONFIG_REISERFS_FS_XATTR protection from reiserfs_permission.

This is needed to avoid warnings during file deletions and chowns with
xattrs disabled.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-17 11:45:45 -07:00
Jeff Mahoney
ceb5edc457 reiserfs: deal with NULL xattr root w/ xattrs disabled
This avoids an Oops in open_xa_root that can occur when deleting a file
with xattrs disabled.  It assumes that the xattr root will be there, and
that is not guaranteed.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-17 11:45:45 -07:00
Jeff Mahoney
12abb35a03 reiserfs: clean up ifdefs
With xattr cleanup even with xattrs disabled, much of the initial setup
is still performed.  Some #ifdefs are just not needed since the options
they protect wouldn't be available anyway.

This cleans those up.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-17 11:45:45 -07:00
Linus Torvalds
bba0b4ec3c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  mm: SLOB fix reclaim_state
  mm: SLUB fix reclaim_state
  slub: add Documentation/ABI/testing/sysfs-kernel-slab
  slub: enforce MAX_ORDER
2009-05-17 11:44:19 -07:00
Russell King
e1342f1da0 Merge branch 'smp-fix' 2009-05-17 17:13:18 +01:00
Russell King
ee348d5a1d [ARM] realview: fix broadcast tick support
Having discussed broadcast tick support with Thomas Glexiner, the
broadcast tick devices should be registered with a higher rating
than the global tick device, and it should have the ONESHOT and
PERIODIC feature flags set.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Thomas Glexiner <tglx@linutronix.de>
2009-05-17 17:11:35 +01:00
Russell King
78d236c2b3 [ARM] realview: remove useless smp_cross_call_done()
smp_cross_call_done() is a no-op for MPCore, and since it's only
used by platform code, there's no point in having it unless it's
doing something.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-17 16:23:45 +01:00
Russell King
826681043d [ARM] smp: fix cpumask usage in ARM SMP code
The ARM SMP code wasn't properly updated for the cpumask changes, which
results in smp_timer_broadcast() broadcasting ticks to non-online CPUs.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-17 16:22:46 +01:00
David S. Miller
17e4d43eb6 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6 2009-05-16 13:46:06 -07:00
Linus Torvalds
0f6f49a8cd Fix caller information for warn_slowpath_null
Ian Campbell noticed that since "Eliminate thousands of warnings with
gcc 3.2 build" (commit 57adc4d2db) all
WARN_ON()'s currently appear to come from warn_slowpath_null(), eg:

  WARNING: at kernel/softirq.c:143 warn_slowpath_null+0x1c/0x20()

because now that warn_slowpath_null() is in the call path, the
__builtin_return_address(0) returns that, rather than the place that
caused the warning.

Fix this by splitting up the warn_slowpath_null/fmt cases differently,
using a common helper function, and getting the return address in the
right place.  This also happens to avoid the unnecessary stack usage for
the non-stdargs case, and just generally cleans things up.

Make the function name printout use %pS while at it.

Cc: Ian Campbell <ian.campbell@citrix.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-16 13:41:28 -07:00
Linus Torvalds
b41a080fa9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  piix: The Sony TZ90 needs the cable type hardcoding
  icside: register second channel of version 6 PCB
  ide-tape: remove back-to-back REQUEST_SENSE detection
2009-05-16 12:47:11 -07:00
Ricardo Martins
776abac817 [ARM] 5513/1: Eurotech VIPER SBC: fix compilation error
Compilation for this board yields the following errors:

arch/arm/mach-pxa/viper.c:511: error: 'FFUART' undeclared here (not in a function)
arch/arm/mach-pxa/viper.c:520: error: 'BTUART' undeclared here (not in a function)
arch/arm/mach-pxa/viper.c:529: error: 'STUART' undeclared here (not in a function)

Fix them by including the necessary header.

Signed-off-by: Ricardo Martins <rasm@fe.up.pt>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-16 19:55:56 +01:00
Hartley Sweeten
ff05c0330b [ARM] 5509/1: ep93xx: clkdev enable UARTS
Fix the clkdev API support for the ep93xx uart clocks.

The uarts available in the ep93xx have individual clock controls.
The current implementation assumes that the bootloader has enabled
the clocks before the kernel has booted. It also assumes that the
bootloader has set the UARTBAUD bit indicating that the uarts are
running off the 14.7456MHz external crystal.

This fixes both issues. It also allows the uart clocks to be stopped
when there are no users.

Tested-by: Matthias Kaehlcke <matthias@kaehlcke.net>

Cc: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-05-16 19:55:56 +01:00
Russell King
cddb783552 Merge branch 'omap-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2009-05-16 19:51:20 +01:00
Linus Torvalds
5fe4990a97 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: Idle C-states disabled by max_cstate should not disable the TSC
  ACPI: idle: fix init-time TSC check regression
  ACPI processor: reset the throttling state once it's invalid
  ACPI processor: introduce module parameter processor.ignore_tpc
  ACPI, i915: build fix
  ACPI: suspend: restore BM_RLD on resume
  ACPI: resume: re-enable SCI-enable workaround
  thermal: fix off-by-1 error in trip point trigger condition
  eeepc-laptop: unregister_rfkill_notifier on failure
  asus-laptop: fix input keycode
  eeepc-laptop: support for super hybrid engine (SHE)
  eeepc-laptop: Work around rfkill firmware bug
  eeepc-laptop: report brightness control events via the input layer
  eeepc-laptop: fix wlan rfkill state change during init
  ACPI: suspend: don't let device _PS3 failure prevent suspend
  ACPI: power: update error message
  ACPI: video: DMI workaround another broken Acer BIOS enabling display brightness
  ACPICA: use acpi.* modparam namespace
  ACPI video: dmi check for broken _BQC on Acer Aspire 5720
2009-05-16 11:22:06 -07:00
Alan Cox
d8788298d4 piix: The Sony TZ90 needs the cable type hardcoding
The Sony TZ90 needs the cable type hardcoding. See bug #12734

Signed-off-by: Alan Cox <alan@linux.intel.com>
Reported-by:  Jonathan E. Snow <jesnow@uh.edu>
[bart: port it from ata_piix to piix and give reporter the proper credit]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-16 19:03:36 +02:00
Sergei Shtylyov
b019447ce7 icside: register second channel of version 6 PCB
The second IDE channel of version 6 PCB is not being registered anymore since
the commit 48c3c10726 (ide: add struct ide_host
(take 3)).

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-16 19:03:36 +02:00
Tejun Heo
36999a5af1 ide-tape: remove back-to-back REQUEST_SENSE detection
Impact: fix an oops which always triggers

ide_tape_issue_pc() assumed drive->pc isn't NULL on invocation when
checking for back-to-back request sense issues but drive->pc can be
NULL and even when it's not NULL, it's not safe to dereference it once
the previous command is complete because pc could have been freed or
was on stack.  Kill back-to-back REQUEST_SENSE detection.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2009-05-16 19:03:18 +02:00
Russell King
b477dfba38 Merge branch 'fixes-rc5' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-05-16 17:54:19 +01:00
Tony Lindgren
005187eeca ARM: OMAP2/3: Change omapfb to use clkdev for dispc and rfbi, v2
This makes the framebuffer work on omap3.

Also fix the clk_get usage for checkpatch.pl
"ERROR: do not use assignment in if condition".

Cc: Imre Deak <imre.deak@nokia.com>
Cc: linux-fbdev-devel@lists.sourceforge.net
Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-16 08:28:17 -07:00
Kalle Jokiniemi
8dbe43930a ARM: OMAP3: Fix HW SAVEANDRESTORE shift define
The OMAP3430ES2_SAVEANDRESTORE_SHIFT macro is used
by powerdomain code in
"1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT" manner, but
the definition was also (1 << 4), meaning we actually
modified bit 16. So the definition needs to be 4.

This fixes also a cold reset HW bug in OMAP3430 ES3.x
where some of the efuse bits are not isolated during
wake-up from off mode. This can cause randomish
cold resets with off mode. Enabling the USBTLL hardware
SAVEANDRESTORE causes the core power up assert to be
delayed in a way that we will not get faulty values
when boot ROM is reading the unisolated registers.

Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-16 08:28:17 -07:00
Vikram Pandita
e102657ed1 ARM: OMAP3: Fix number of GPIO lines for 34xx
As per 3430 TRM, there are 6 banks [0 to 191]

Signed-off-by: Tom Rix <Tom.Rix@windriver.com>
Signed-off-by: Vikram Pandita <vikram.pandita@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2009-05-16 08:28:16 -07:00
Len Brown
4e3507f718 Merge branches 'release', 'bugzilla-13032', 'bugzilla-13041+', 'bugzilla-13121', 'bugzilla-13165', 'bugzilla-13243', 'bugzilla-13259', 'resume-sci-en-regression', 'thermal-regression', 'tsc-regression' and 'asus-2.6.30' into release 2009-05-16 01:55:59 -04:00
Len Brown
a0bf284bfe ACPI: Idle C-states disabled by max_cstate should not disable the TSC
Processor idle power states C2 and C3 stop the TSC on many machines.
Linux recognizes this situation and marks the TSC as unstable:

Marking TSC unstable due to TSC halts in idle

But if those same machines are booted with "processor.max_cstate=1",
then there is no need to validate C2 and C3, and no need to
disable the TSC, which can be reliably used as a clocksource.

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2009-05-16 01:52:39 -04:00
Len Brown
520daf7217 ACPI: idle: fix init-time TSC check regression
A previous 2.6.30 patch, a71e4917dc,
(ACPI: idle: mark_tsc_unstable() at init-time, not run-time)
erroneously disabled the TSC on systems that did not actually
have valid deep C-states.

Move the check after the deep-C-states are validated,
via new helper, tsc_check_state(), hich replaces tsc_halts_in_c().

Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Frans Pop <elendil@planet.nl>
2009-05-16 01:51:51 -04:00
Linus Torvalds
1406de8e11 Linux 2.6.30-rc6 2009-05-15 21:12:57 -07:00
Zhang Rui
4973b22aa8 ACPI processor: reset the throttling state once it's invalid
If the BIOS hands us an invalid throttling state,
write a valid state.

http://bugzilla.kernel.org/show_bug.cgi?id=13259

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: James Ettle <theholyettlz@googlemail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-15 23:21:54 -04:00
Zhang Rui
56c213fa01 ACPI processor: introduce module parameter processor.ignore_tpc
Introduce module parameter processor.ignore_tpc.

Some laptops are shipped with buggy _TPC,
this module parameter is used to to disable the buggy support.

http://bugzilla.kernel.org/show_bug.cgi?id=13259

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Tested-by: James Ettle <theholyettlz@googlemail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-15 23:21:43 -04:00
Len Brown
ecb4aed78d ACPI, i915: build fix
drivers/built-in.o: In function `intel_opregion_init':
(.text+0x9d540): undefined reference to `acpi_video_register'

http://bugzilla.kernel.org/show_bug.cgi?id=13165

Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-15 22:52:21 -04:00
Len Brown
815ab0fd40 ACPI: suspend: restore BM_RLD on resume
In 2.6.29,
31878dd86b
"ACPI: remove BM_RLD access from idle entry path"
moved BM_RLD initialization to init-time from run time.

But we discovered that some BIOS do not restore BM_RLD
after suspend, causing device errors on C3 and C4
after resume.  So now the kernel restores BM_RLD.

http://bugzilla.kernel.org/show_bug.cgi?id=13032

Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-15 22:44:05 -04:00
Lin Ming
975b3c474c ACPI: resume: re-enable SCI-enable workaround
The BIOS bug workaround mistakenly got disabled
when we followed the ACPI specification more closely
by ignoring OS updates to that bit.

(The BIOS is supposed to update SCI_EN, not the OS)

http://bugzilla.kernel.org/show_bug.cgi?id=13289

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-05-15 22:27:49 -04:00
Linus Torvalds
72357d5955 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI MSI: Fix MSI-X with NIU cards
  PCI: Fix pci-e port driver slot_reset bad default return value
2009-05-15 16:47:55 -07:00
Bjorn Helgaas
4484079d51 PM: check sysdev_suspend(PMSG_FREEZE) return value
Check the return value of sysdev_suspend().  I think this was a typo.
Without this change, the following "if" check is always false.
I also changed the error message so it's distinguishable from the
similar message a few lines above.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2009-05-15 23:30:50 +02:00
Linus Torvalds
7c7327d966 Merge git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/holtmann/bluetooth-2.6:
  Bluetooth: Don't trigger disconnect timeout for security mode 3 pairing
  Bluetooth: Don't use hci_acl_connect_cancel() for incoming connections
  Bluetooth: Fix wrong module refcount when connection setup fails

Another case of me handling the fallout from Davem's unfortunate
addiction to shuffleboard.

Won't anybody think of the children? Join the anti-shuffleboard league
today!
2009-05-15 14:30:02 -07:00