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authorRobert Love <robert.w.love@intel.com>2010-11-30 16:18:23 -0800
committerJames Bottomley <James.Bottomley@suse.de>2010-12-21 12:24:20 -0600
commit3c2c3bf23cbef8eed6cf815715d0bece5cb7b5ec (patch)
tree3cca737e6945e452aeb8888c3aa36939d76aa338 /drivers/scsi/libfc/fc_fcp.c
parent2034c19ce8f8503aa14cb1e763fbfe60316aaa8e (diff)
downloadop-kernel-dev-3c2c3bf23cbef8eed6cf815715d0bece5cb7b5ec.zip
op-kernel-dev-3c2c3bf23cbef8eed6cf815715d0bece5cb7b5ec.tar.gz
[SCSI] libfc: Fix incorrect locking and unlocking in FCP
The error handler grabs the si->scsi_queue_lock, but in the case where the fsp pointer is NULL it releases the scsi_host lock. This can lead to a variety of system hangs depending on which is used first- the scsi_host lock or the scsi_queue_lock. This patch simply unlocks the correct lock when fcp is NULL. Signed-off-by: Robert Love <robert.w.love@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libfc/fc_fcp.c')
-rw-r--r--drivers/scsi/libfc/fc_fcp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/libfc/fc_fcp.c b/drivers/scsi/libfc/fc_fcp.c
index 2924363..b9ad74d 100644
--- a/drivers/scsi/libfc/fc_fcp.c
+++ b/drivers/scsi/libfc/fc_fcp.c
@@ -2004,7 +2004,7 @@ int fc_eh_abort(struct scsi_cmnd *sc_cmd)
fsp = CMD_SP(sc_cmd);
if (!fsp) {
/* command completed while scsi eh was setting up */
- spin_unlock_irqrestore(lport->host->host_lock, flags);
+ spin_unlock_irqrestore(&si->scsi_queue_lock, flags);
return SUCCESS;
}
/* grab a ref so the fsp and sc_cmd cannot be relased from under us */
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