scsi: mpi3mr: Fix reporting of actual data transfer size

The driver is missing to set the residual size while completing an
I/O. Ensure proper data transfer size is reported to the kernel on I/O
completion based on the transfer length reported by the firmware.

Link: https://lore.kernel.org/r/20220210095817.22828-7-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpi3mr/mpi3mr_os.c b/drivers/scsi/mpi3mr/mpi3mr_os.c
index fa47850..6a913d8 100644 (file)
--- a/drivers/scsi/mpi3mr/mpi3mr_os.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_os.c
@@ -2600,6 +2600,8 @@ void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
                scmd->result = DID_OK << 16;
                goto out_success;
        }
+
+       scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_count);
        if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
            xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
            scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||