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[SCSI] qla2xxx: Validate mid-layer 'underflow' during check-condition handling.

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Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Shyam Sundar 2007-07-19 15:05:59 -07:00 committed by James Bottomley
parent 5881569bb3
commit 8084fe168a
1 changed files with 19 additions and 0 deletions
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19
drivers/scsi/qla2xxx/qla_isr.c
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@ -1062,6 +1062,25 @@ qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
cp->device->id, cp->device->lun, cp,
cp->serial_number));
/*
* In case of a Underrun condition, set both the lscsi
* status and the completion status to appropriate
* values.
*/
if (resid &&
((unsigned)(cp->request_bufflen - resid) <
cp->underflow)) {
DEBUG2(qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Mid-layer underflow "
"detected (%x of %x bytes)...returning "
"error status.\n", ha->host_no,
cp->device->channel, cp->device->id,
cp->device->lun, resid,
cp->request_bufflen));
cp->result = DID_ERROR << 16 | lscsi_status;
}
if (sense_len)
DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
CMD_ACTUAL_SNSLEN(cp)));