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scsi: core: sysfs: Fix setting device state to SDEV_RUNNING 

This fixes an issue added in commit 4edd8cd4e8 ("scsi: core: sysfs: Fix
hang when device state is set via sysfs") where if userspace is requesting
to set the device state to SDEV_RUNNING when the state is already
SDEV_RUNNING, we return -EINVAL instead of count. The commmit above set ret
to count for this case, when it should have set it to 0.

Link: https://lore.kernel.org/r/20211120164917.4924-1-michael.christie@oracle.com
Fixes: 4edd8cd4e8 ("scsi: core: sysfs: Fix hang when device state is set via sysfs")
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Mike Christie 2021-11-20 10:49:17 -06:00 committed by Martin K. Petersen
parent e0a2c28da1
commit eb97545d62
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_sysfs.c
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@ -812,7 +812,7 @@ store_state_field(struct device *dev, struct device_attribute *attr,
mutex_lock(&sdev->state_mutex);
if (sdev->sdev_state == SDEV_RUNNING && state == SDEV_RUNNING) {
ret = count;
ret = 0;
} else {
ret = scsi_device_set_state(sdev, state);
if (ret == 0 && state == SDEV_RUNNING)