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[SCSI] qla2xxx: Use 'proper' DID_* status code for dropped-frame scenarios.

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The SCSI-midlayer's fast-fail codes consider an DID_ERROR status
as a driver-error and the failed I/O would then be retried in the
midlayer without being fast-failed to dm-multipath.  DID_BUS_BUSY
status returns would induce unneeded path-failures events being
propagated to the DM/MD.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Andrew Vasquez 2009-06-03 09:55:18 -07:00 committed by James Bottomley
parent cbc8eb67da
commit 94b3aa47ac
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/qla2xxx/qla_isr.c
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@ -1211,7 +1211,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
/*
* If RISC reports underrun and target does not report
* it then we must have a lost frame, so tell upper
* layer to retry it by reporting a bus busy.
* layer to retry it by reporting an error.
*/
if (!(scsi_status & SS_RESIDUAL_UNDER)) {
DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
@ -1221,7 +1221,7 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
cp->device->id, cp->device->lun, resid,
scsi_bufflen(cp)));
cp->result = DID_BUS_BUSY << 16;
cp->result = DID_ERROR << 16;
break;
}