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scsi: libsas: fix error when getting phy events

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[ Upstream commit 2b23d9509f ]

The intend purpose here was to goto out if smp_execute_task() returned
error. Obviously something got screwed up. We will never get these link
error statistics below:

~:/sys/class/sas_phy/phy-1:0:12 # cat invalid_dword_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat running_disparity_error_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat loss_of_dword_sync_count
0
~:/sys/class/sas_phy/phy-1:0:12 # cat phy_reset_problem_count
0

Obviously we should goto error handler if smp_execute_task() returns
non-zero.

Fixes: 2908d778ab ("[SCSI] aic94xx: new driver")
Signed-off-by: Jason Yan <yanaijie@huawei.com>
CC: John Garry <john.garry@huawei.com>
CC: chenqilin <chenqilin2@huawei.com>
CC: chenxiang <chenxiang66@hisilicon.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jason Yan
2018-01-04 21:04:32 +08:00
committed by Greg Kroah-Hartman
parent 0ef71347d2
commit 7333f17273
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/libsas/sas_expander.c
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@@ -675,7 +675,7 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
res = smp_execute_task(dev, req, RPEL_REQ_SIZE,
resp, RPEL_RESP_SIZE);
if (!res)
if (res)
goto out;
phy->invalid_dword_count = scsi_to_u32(&resp[12]);