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[SCSI] Fix DVD burning issues. 

Some pioneer DVDs are apparently returning odd "not ready" status
codes that the mid-layer doesn't recognise and so passes back to the
user as errors.

This patch overhauls our not-ready handling and adds transparent retries for:

format in progress
rebuild in progress
recalculation in progress
operation in progress
Long write in progress
self test in progress

The Pioneer was actually returning "long write in progress"

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley 2006-04-25 16:48:30 -05:00 committed by James Bottomley
parent 4a6fae1d9c
commit f3e93f7353
1 changed files with 20 additions and 7 deletions
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27
drivers/scsi/scsi_lib.c
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@ -1067,16 +1067,29 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes,
break;
case NOT_READY:
/*
* If the device is in the process of becoming ready,
* retry.
* If the device is in the process of becoming
* ready, or has a temporary blockage, retry.
*/
if (sshdr.asc == 0x04 && sshdr.ascq == 0x01) {
scsi_requeue_command(q, cmd);
return;
if (sshdr.asc == 0x04) {
switch (sshdr.ascq) {
case 0x01: /* becoming ready */
case 0x04: /* format in progress */
case 0x05: /* rebuild in progress */
case 0x06: /* recalculation in progress */
case 0x07: /* operation in progress */
case 0x08: /* Long write in progress */
case 0x09: /* self test in progress */
scsi_requeue_command(q, cmd);
return;
default:
break;
}
}
if (!(req->flags & REQ_QUIET))
if (!(req->flags & REQ_QUIET)) {
scmd_printk(KERN_INFO, cmd,
"Device not ready.\n");
"Device not ready: ");
scsi_print_sense_hdr("", &sshdr);
}
scsi_end_request(cmd, 0, this_count, 1);
return;
case VOLUME_OVERFLOW: