From: Jens Axboe <axboe@suse.de>
On Sat, Feb 17 2001, John Fremlin wrote:
> Specifically, this part:
>
> @@ -2324,11 +2309,17 @@
> sense.ascq == 0x04)
> return CDS_DISC_OK;
>
> +
> + /*
> + * If not using Mt Fuji extended media tray reports,
> + * just return TRAY_OPEN since ATAPI doesn't provide
> + * any other way to detect this...
> + */
> if (sense.sense_key == NOT_READY) {
> - /* ATAPI doesn't have anything that can help
> - us decide whether the drive is really
> - emtpy or the tray is just open. irk. */
> - return CDS_TRAY_OPEN;
> + if (sense.asc == 0x3a && (!sense.ascq||sense.ascq == 1))
> + return CDS_NO_DISC;
> + else
> + return CDS_TRAY_OPEN;
> }
>
> My tray is open as I type, and it is misreported as CDS_NO_DISC. In
> 2.4.0 it worked fine.
Your drive is broken, the only other valid combination is 0x3a/0x02
which means no media and tray open. You could try and dump the asc
and ascq to see what your drive reports for the different states.
Ha Jens - must we disagree twice on one evening?
You know all about this stuff, so probably I am mistaken.
However, my copy of SFF8020-r2.6 everywhere has
"Sense 02 ASC 3A: Medium not present" without giving
subcodes to distinguish Tray Open from No Disc.
So, it seems to me that drives built to this spec will not have
nonzero ASCQ.
Andries
-
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This archive was generated by hypermail 2b29 : Fri Feb 23 2001 - 21:00:18 EST