From: Mike Christie michael.christie@oracle.com
[ Upstream commit eb97545d6264b341b06ba7603f52ff6c0b2af6ea ]
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.
Link: https://lore.kernel.org/r/20211120164917.4924-1-michael.christie@oracle.com Fixes: 4edd8cd4e86d ("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 Signed-off-by: Sasha Levin sashal@kernel.org --- 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 16432d42a50aa..6faf1d6451b0c 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -796,7 +796,7 @@ 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)