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[SCSI] qla4xxx: Complete the cmd if sense_len is zero

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Complete the cmd if sense length is zero. For cases where sense
data spans across multiple iocb's by FW, we need to hold on to the
I/O (ha->status_srb != NULL) till we have processed them all and
copied the sense data from internal buffer to scsi_cmd sense buffer.

Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <jbottomley@parallels.com>
This commit is contained in:
Prasanna Mumbai 2011-05-17 23:17:06 -07:00 committed by James Bottomley
parent 68d92ebf59
commit 6d78bd56be
1 changed files with 7 additions and 2 deletions
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9
drivers/scsi/qla4xxx/ql4_isr.c
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@ -25,9 +25,14 @@ static void qla4xxx_copy_sense(struct scsi_qla_host *ha,
memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
sense_len = le16_to_cpu(sts_entry->senseDataByteCnt);
if (sense_len == 0)
if (sense_len == 0) {
DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%d: %s:"
" sense len 0\n", ha->host_no,
cmd->device->channel, cmd->device->id,
cmd->device->lun, __func__));
ha->status_srb = NULL;
return;
}
/* Save total available sense length,
* not to exceed cmd's sense buffer size */
sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE);