[PATCH 1/1] scsi: Fix setting device state to running

[Mike Christie <michael.christie@oracle.com>]

This fixes an issue added in:

commit 4edd8cd4e86d ("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.

Fixes: 4edd8cd4e86d ("scsi: core: sysfs: Fix hang when device state is set
via sysfs")
Signed-off-by: Mike Christie <michael.christie@oracle.com>

---
 drivers/scsi/scsi_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 7afcec250f9b..d4edce930a4a 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -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)
-- 
2.25.1