From: Bart Van Assche <bart.vanassche@wdc.com>
Date: Fri, 15 Jun 2018 14:41:58 -0700
Subject: [PATCH] scsi: mpt3sas: Fix _transport_smp_handler() error path
Git-commit: 91b7bdb2c0089cbbb817df6888ab1458c645184e Mon Sep 17 00:00:00 2001
Patch-mainline: v4.19-rc1
References: bsc#1104967,FATE#325924
This patch avoids that smatch complains about a double unlock on
ioc->transport_cmds.mutex.
Fixes: 651a01364994 ("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>
Acked-by: Hannes Reinecke <hare@suse.com>
---
drivers/scsi/mpt3sas/mpt3sas_transport.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/mpt3sas/mpt3sas_transport.c b/drivers/scsi/mpt3sas/mpt3sas_transport.c
index 05d506d78c66..f4b02dd7f6cf 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_transport.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_transport.c
@@ -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);
}
--
2.16.4