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scsi: megaraid_sas: set residual bytes count during IO completion 

Fixing issue of not setting residual bytes correctly.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Shivasharan S 2017-02-10 00:59:14 -08:00 committed by Martin K. Petersen
parent a48ba0eca0
commit 31d9a57b41
1 changed files with 10 additions and 0 deletions
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drivers/scsi/megaraid/megaraid_sas_fusion.c
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@ -1445,6 +1445,7 @@ map_cmd_status(struct fusion_context *fusion,
struct scsi_cmnd *scmd, u8 status, u8 ext_status,
u32 data_length, u8 *sense)
{
int resid;
switch (status) {
@ -1467,6 +1468,15 @@ map_cmd_status(struct fusion_context *fusion,
SCSI_SENSE_BUFFERSIZE);
scmd->result |= DRIVER_SENSE << 24;
}
/*
* If the IO request is partially completed, then MR FW will
* update "io_request->DataLength" field with actual number of
* bytes transferred.Driver will set residual bytes count in
* SCSI command structure.
*/
resid = (scsi_bufflen(scmd) - data_length);
scsi_set_resid(scmd, resid);
break;
case MFI_STAT_LD_OFFLINE: