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BACKPORT: FROMLIST: scsi: ufs: Make ufshcd_poll() complain about unsupported arguments

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The ufshcd_poll() implementation does not support queue_num ==
UFSHCD_POLL_FROM_INTERRUPT_CONTEXT in MCQ mode. Hence complain
if queue_num == UFSHCD_POLL_FROM_INTERRUPT_CONTEXT in MCQ mode.

Bug: 312786487
Bug: 326329246
Bug: 333069246
Bug: 333317508
Link: https://lore.kernel.org/linux-scsi/20240416171357.1062583-1-bvanassche@acm.org/T/#mf141ffd0528e062eccaceb98f326abae709da3c1
Change-Id: I4182872aa86ed84f074a3f11364138cfde19e74b
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Bart Van Assche <bvanassche@google.com>
This commit is contained in:
Bart Van Assche
2024-04-11 15:49:11 -07:00
committed by Bart Van Assche
parent aa07d6b28d
commit 0fcd7a1c7c
1 changed files with 1 additions and 0 deletions
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1
drivers/ufs/core/ufshcd.c
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@@ -5540,6 +5540,7 @@ static int ufshcd_poll(struct Scsi_Host *shost, unsigned int queue_num)
struct ufs_hw_queue *hwq;
if (is_mcq_enabled(hba)) {
WARN_ON_ONCE(queue_num == UFSHCD_POLL_FROM_INTERRUPT_CONTEXT);
hwq = &hba->uhq[queue_num + UFSHCD_MCQ_IO_QUEUE_OFFSET];
return ufshcd_mcq_poll_cqe_lock(hba, hwq);