From: Can Guo cang@codeaurora.org
[ Upstream commit 1235fc569e0bf541ddda0a1224d4c6fa6d914890 ]
ufshcd_tmc_handler() calls blk_mq_tagset_busy_iter(fn = ufshcd_compl_tm()), but since blk_mq_tagset_busy_iter() only iterates over all reserved tags and requests which are not in IDLE state, ufshcd_compl_tm() never gets a chance to run. Thus, TMR always ends up with completion timeout. Fix it by calling blk_mq_start_request() in __ufshcd_issue_tm_cmd().
Link: https://lore.kernel.org/r/1617262750-4864-2-git-send-email-cang@codeaurora.o... Fixes: 69a6c269c097 ("scsi: ufs: Use blk_{get,put}_request() to allocate and free TMFs") Reviewed-by: Bart Van Assche bvanassche@acm.org Signed-off-by: Can Guo cang@codeaurora.org Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/scsi/ufs/ufshcd.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 16e1bd1aa49d..c801f88007dd 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -6381,6 +6381,7 @@ static int __ufshcd_issue_tm_cmd(struct ufs_hba *hba,
spin_lock_irqsave(host->host_lock, flags); task_tag = hba->nutrs + free_slot; + blk_mq_start_request(req);
treq->req_header.dword_0 |= cpu_to_be32(task_tag);