> 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@xxxxxxx> Reviewed-by: Avri Altman <avri.altman@xxxxxxx> > --- > drivers/ufs/core/ufshcd.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c > index ce7b765aa2af..7bbbae9c7c61 100644 > --- a/drivers/ufs/core/ufshcd.c > +++ b/drivers/ufs/core/ufshcd.c > @@ -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);
