6.14-stable review patch. If anyone has any objections, please let me know.
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From: Ranjan Kumar ranjan.kumar@broadcom.com
commit cdd445258db9919e9dde497a6d5c3477ea7faf4d upstream.
Commit 199510e33dea ("scsi: mpi3mr: Update consumer index of reply queues after every 100 replies") introduced a regression with the per-reply queue pending I/O counter which was erroneously decremented, leading to the counter going negative.
Drop the incorrect atomic decrement for the pending I/O counter.
Fixes: 199510e33dea ("scsi: mpi3mr: Update consumer index of reply queues after every 100 replies") Cc: stable@vger.kernel.org Co-developed-by: Sathya Prakash sathya.prakash@broadcom.com Signed-off-by: Sathya Prakash sathya.prakash@broadcom.com Signed-off-by: Ranjan Kumar ranjan.kumar@broadcom.com Link: https://lore.kernel.org/r/20250411111419.135485-2-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/mpi3mr/mpi3mr_fw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -563,7 +563,7 @@ int mpi3mr_process_op_reply_q(struct mpi WRITE_ONCE(op_req_q->ci, le16_to_cpu(reply_desc->request_queue_ci)); mpi3mr_process_op_reply_desc(mrioc, reply_desc, &reply_dma, reply_qidx); - atomic_dec(&op_reply_q->pend_ios); + if (reply_dma) mpi3mr_repost_reply_buf(mrioc, reply_dma); num_op_reply++;