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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-21 19:10:17 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-09-21 19:10:17 (GMT) |
| commit | 267b50fe6fedb1ea9e25702129b95a1dfd19b31c (patch) | |
| tree | 41a9335ec5d51f4fb9d1c915fbefaf381f977094 /drivers/s390/cio/device.c | |
| parent | 8ca7de91640a9840a0d29021d17492be7fd8232b (diff) | |
| parent | 03429f34c22cedc3300a81e13d5790450cc468af (diff) | |
| download | linux-fsl-qoriq-267b50fe6fedb1ea9e25702129b95a1dfd19b31c.tar.xz | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Bug fixes for 3.6-rc7, including some important patches for large page
related memory management issues."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: fix read unit address configuration loop
s390/dasd: fix pathgroup race
s390/mm: fix user access page-table walk code
s390/hwcaps: do not report high gprs for 31 bit kernel
s390/cio: invalidate cdev pointer before deregistration
s390/cio: fix IO subchannel event race
s390/dasd: move wake_up call
s390/hugetlb: use direct TLB flushing for hugetlbfs pages
s390/mm: fix deadlock in unmap_hugepage_range()
Diffstat (limited to 'drivers/s390/cio/device.c')
| -rw-r--r-- | drivers/s390/cio/device.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index ed25c87..fc916f5 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -1426,6 +1426,8 @@ static enum io_sch_action sch_get_action(struct subchannel *sch) return IO_SCH_REPROBE; if (cdev->online) return IO_SCH_VERIFY; + if (cdev->private->state == DEV_STATE_NOT_OPER) + return IO_SCH_UNREG_ATTACH; return IO_SCH_NOP; } @@ -1519,11 +1521,14 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process) goto out; break; case IO_SCH_UNREG_ATTACH: + spin_lock_irqsave(sch->lock, flags); if (cdev->private->flags.resuming) { /* Device will be handled later. */ rc = 0; - goto out; + goto out_unlock; } + sch_set_cdev(sch, NULL); + spin_unlock_irqrestore(sch->lock, flags); /* Unregister ccw device. */ ccw_device_unregister(cdev); break; |