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| author | Tomas Henzl <thenzl@redhat.com> | 2014-07-09 17:21:01 +0530 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-07-25 17:17:04 -0400 |
| commit | 646cdf0083e3d4a9b995f37b72c3c8a22d9307de (patch) | |
| tree | f0730421a40f2037a840489a8afdce0e4b2c1598 /drivers/scsi/pm8001/pm8001_sas.h | |
| parent | 5533abca06e07121697ed1d30863ce03e7c518e5 (diff) | |
| download | op-kernel-dev-646cdf0083e3d4a9b995f37b72c3c8a22d9307de.zip op-kernel-dev-646cdf0083e3d4a9b995f37b72c3c8a22d9307de.tar.gz | |
pm8001: add a new spinlock to protect the CCB
Patch adds a new spinlock to protect the ccb management.
It may happen that concurrent threads become the same tag value
from the 'alloc' function', the spinlock prevents this situation.
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com>
Acked-by: Jack Wang <xjtuwjp@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/pm8001/pm8001_sas.h')
| -rw-r--r-- | drivers/scsi/pm8001/pm8001_sas.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h index 14106ad..f6b2ac5 100644 --- a/drivers/scsi/pm8001/pm8001_sas.h +++ b/drivers/scsi/pm8001/pm8001_sas.h @@ -475,6 +475,7 @@ struct pm8001_hba_info { struct list_head list; unsigned long flags; spinlock_t lock;/* host-wide lock */ + spinlock_t bitmap_lock; struct pci_dev *pdev;/* our device */ struct device *dev; struct pm8001_hba_memspace io_mem[6]; |
