scsi: pm80xx: Update WARN_ON check in pm8001_mpi_build_cmd()

[ Upstream commit 606c54ae975ad3af540b505b46b55a687501711f ]

Starting from commit 05c6c029a44d ("scsi: pm80xx: Increase number of
supported queues") driver initializes only max_q_num queues.  Do not use an
invalid queue if the WARN_ON condition is true.

Link: https://lore.kernel.org/r/20211101232825.2350233-4-ipylypiv@google.com
Fixes: 7640e1eb8c5d ("scsi: pm80xx: Make mpi_build_cmd locking consistent")
Reviewed-by: Vishakha Channapattan <vishakhavc@google.com>
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index 5d75162..9b31895 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -1323,7 +1323,9 @@ int pm8001_mpi_build_cmd(struct pm8001_hba_info *pm8001_ha,
        int q_index = circularQ - pm8001_ha->inbnd_q_tbl;
        int rv = -1;
 
-       WARN_ON(q_index >= PM8001_MAX_INB_NUM);
+       if (WARN_ON(q_index >= pm8001_ha->max_q_num))
+               return -EINVAL;
+
        spin_lock_irqsave(&circularQ->iq_lock, flags);
        rv = pm8001_mpi_msg_free_get(circularQ, pm8001_ha->iomb_size,
                        &pMessage);