The scsi async probe process is calling blk_pm_runtime_init for each
lun, and then those request queues are monitored by the block layer pm
engine (blk-pm.c). This is however, not the case for scsi-passthrough
queues, created by bsg_setup_queue().
So the ufs-bsg driver might send various commands, disregarding the pm
status of the device. This is wrong, regardless if its request queue is
pm-aware or not.
Fixes: df032bf27a41 (scsi: ufs: Add a bsg endpoint that supports UPIUs)
Signed-off-by: Avri Altman <avri.alt...@wdc.com>
Reported-by: Yuliy Izrailov <yuliy.izrai...@wdc.com>
---
drivers/scsi/ufs/ufs_bsg.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/scsi/ufs/ufs_bsg.c b/drivers/scsi/ufs/ufs_bsg.c
index a9344eb..dc2f6d2 100644
--- a/drivers/scsi/ufs/ufs_bsg.c
+++ b/drivers/scsi/ufs/ufs_bsg.c
@@ -98,6 +98,8 @@ static int ufs_bsg_request(struct bsg_job *job)
bsg_reply->reply_payload_rcv_len = 0;
+ pm_runtime_get_sync(hba->dev);
+
msgcode = bsg_request->msgcode;
switch (msgcode) {
case UPIU_TRANSACTION_QUERY_REQ:
@@ -135,6 +137,8 @@ static int ufs_bsg_request(struct bsg_job *job)
break;
}
+ pm_runtime_put_sync(hba->dev);
+
if (!desc_buff)
goto out;
--
2.7.4
