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scsi: ufs: core: Set the residual byte count

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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
1 changed files with 3 additions and 0 deletions
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3
drivers/ufs/core/ufshcd.c
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@ -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);