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| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-02-17 11:24:51 -0600 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-02-18 09:02:25 -0600 |
| commit | ff83efacf2b77a1fe8942db6613825a4b80ee5e2 (patch) | |
| tree | 4eb14ace67f773a18e6f712304d0b7aa1ac1f9ee /drivers/scsi | |
| parent | 279e7f5425c5e6da6ca61b1d8576356a939789f9 (diff) | |
| download | op-kernel-dev-ff83efacf2b77a1fe8942db6613825a4b80ee5e2.zip op-kernel-dev-ff83efacf2b77a1fe8942db6613825a4b80ee5e2.tar.gz | |
[SCSI] gdth: don't call pci_free_consistent under spinlock
The spinlock is held over too large a region: pscratch is a permanent
address (it's allocated at boot time and never changes). All you need
the smp lock for is mediating the scratch in use flag, so fix this by
moving the spinlock into the case where we set the pscratch_busy flag
to false.
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/gdth_proc.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/scsi/gdth_proc.c b/drivers/scsi/gdth_proc.c index de57734..ce0228e 100644 --- a/drivers/scsi/gdth_proc.c +++ b/drivers/scsi/gdth_proc.c @@ -694,15 +694,13 @@ static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, ulong64 paddr) { ulong flags; - spin_lock_irqsave(&ha->smp_lock, flags); - if (buf == ha->pscratch) { + spin_lock_irqsave(&ha->smp_lock, flags); ha->scratch_busy = FALSE; + spin_unlock_irqrestore(&ha->smp_lock, flags); } else { pci_free_consistent(ha->pdev, size, buf, paddr); } - - spin_unlock_irqrestore(&ha->smp_lock, flags); } #ifdef GDTH_IOCTL_PROC |
