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scsi: mpt3sas: Fix _transport_smp_handler() error path

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This patch avoids that smatch complains about a double unlock on
ioc->transport_cmds.mutex.

Fixes: 651a013649 ("scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Sathya Prakash <sathya.prakash@broadcom.com>
Cc: Chaitra P B <chaitra.basappa@broadcom.com>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com>
Cc: stable@vger.kernel.org
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2018-06-15 14:41:58 -07:00 committed by Martin K. Petersen
parent 84203b3561
commit 91b7bdb2c0
1 changed files with 3 additions and 2 deletions
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5
drivers/scsi/mpt3sas/mpt3sas_transport.c
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@ -1936,12 +1936,12 @@ _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
pr_info(MPT3SAS_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
rc = -EFAULT;
goto out;
goto job_done;
}
rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
if (rc)
goto out;
goto job_done;
if (ioc->transport_cmds.status != MPT3_CMD_NOT_USED) {
pr_err(MPT3SAS_FMT "%s: transport_cmds in use\n", ioc->name,
@ -2066,6 +2066,7 @@ _transport_smp_handler(struct bsg_job *job, struct Scsi_Host *shost,
out:
ioc->transport_cmds.status = MPT3_CMD_NOT_USED;
mutex_unlock(&ioc->transport_cmds.mutex);
job_done:
bsg_job_done(job, rc, reslen);
}