Re: CDC_PLAY_AUDIO check in cdrom_count_tracks() and other oddities

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On Thu, Jun 12 2008, Tejun Heo wrote:
> Hello, Jens.
> 
> I'm tracking down a bug where HAL doesn't mount media automatically.
> It turned out that CDROM_DISC_STATUS wasn't reporting correct disc
> type which was caused by CDC_PLAY_AUDIO check failure at the top of
> cdrom_count_tracks().
> 
> I've went through MMC-3 but couldn't find anything which associates
> play audio capability with READ_TOC.  READ_TOC was mandatory command,
> so according to MMC-3, there's no reason to avoid issuing READ_TOC on
> !CDC_PLAY_AUDIO.  Is there something I don't know?

That check predates me :-)

I can't imagine drives NOT having READ_TOC, so I don't think it's a
problem to remove the depedency on CDC_PLAY_AUDIO.

-- 
Jens Axboe

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