linux-kernel - Re: Is it time for remove (crap) ALSA from kernel tree ?

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Date:	Mon, 25 Jun 2007 12:41:29 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	"Nobin Mathew" <nobin.mathew@...il.com>,
	"Carlo Wood" <carlo@...noe.com>,
	"Tomasz Kłoczko" <kloczek@...y.mif.pg.gda.pl>,
	linux-kernel@...r.kernel.org
Subject: Re: Is it time for remove (crap) ALSA from kernel tree ?

At Mon, 25 Jun 2007 10:06:18 +0100,
Alan Cox wrote:
> 
> > If it is native ALSA driver then it will restart after each underrun
> > and overrun. It is the applications job to do this, alsa-lib provides
> > all support for this. I have no idea of OSS and OSS emulation in ALSA.
> 
> OSS should autorestart on underrun and just moan about overruns and drop
> bits. So if it's not following that behaviour he is IMHO correct for the
> OSS emulation case.

I think he is right in the case of read (although I don't remember his
post as my buffer overran).  The playback is automaically reset and
restarted at underrun.

But, the patch there is wrong.  It should handle -EPIPE, which means
XRUN, while -ESTRPIPE means the suspend state.


Takashi
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