scsi: ufs: core: Set the residual byte count

It is important for the SCSI core to know the residual byte count.  Hence,
extract the residual byte count from the UFS response and pass it to the
SCSI core. A few examples of the output of a debugging patch that has been
applied on top of this patch:

[    1.937750] cmd 0x12: len = 255; resid = 241
[ ... ]
[    1.993400] cmd 0xa0: len = 4096; resid = 4048
[ ... ]

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Link: https://lore.kernel.org/r/20230314205844.313519-1-bvanassche@acm.org
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2023-03-14 13:58:35 -07:00 committed by Martin K. Petersen
parent fb5ea4f520
commit cb38845d90

View File

@ -5238,6 +5238,9 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp,
int scsi_status;
enum utp_ocs ocs;
scsi_set_resid(lrbp->cmd,
be32_to_cpu(lrbp->ucd_rsp_ptr->sr.residual_transfer_count));
/* overall command status of utrd */
ocs = ufshcd_get_tr_ocs(lrbp, cqe);