Re: 2.4.0 CDROM problem, ILLEGAL REQUEST

From: Jens Axboe (axboe@suse.de)
Date: Fri Jan 26 2001 - 09:36:14 EST

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On Sun, Jan 21 2001, Gregory T. Norris wrote:
> When playing audio CDs under kernel 2.4.0, syslog is showing the
> following message repeatedly:
>
> sr0: CDROM (ioctl) reports ILLEGAL REQUEST.
>
> The command line utility cdplay seems to only cause this occasionally,
> when I start playing a CD or skip to a different track, while gnome's
> gtcd will generate it every few seconds... presumably gtcd is regularly
> querying the drive.
>
> I'm pretty sure that this wasn't occurring under the 2.4.0-testX
> kernels, but I haven't verified this as they aren't currently
> installed.

Yes it's a new and known bug, sr_do_ioctl now does retries etc for
queued packets from the uniform layer and thus we get some printkts
that you normally wouldn't see. The error should only be cosmetic.

-- 
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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