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scsi: ufs-bsg: Wake the device before sending raw upiu commands

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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: df032bf27a (scsi: ufs: Add a bsg endpoint that supports UPIUs)
Link: https://lore.kernel.org/r/[email protected]
Reported-by: Yuliy Izrailov <[email protected]>
Signed-off-by: Avri Altman <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
This commit is contained in:
Avri Altman 2019-10-10 11:31:07 +03:00 • committed by Martin K. Petersen
commit 74e5e468b6
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/ufs/ufs_bsg.c
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@ -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;