linux-kernel - Re: sound: -EPERM on first mplayer invocation

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Message-ID: <4A7947ED.1050300@ladisch.de>
Date:	Wed, 05 Aug 2009 10:50:53 +0200
From:	Clemens Ladisch <clemens@...isch.de>
To:	Takashi Iwai <tiwai@...e.de>
CC:	Denys Vlasenko <vda.linux@...glemail.com>,
	linux-kernel@...r.kernel.org
Subject: Re: sound: -EPERM on first mplayer invocation

Takashi Iwai wrote:
> I wrote:
> > The file instances are different.  It implies that mplayer opens the
> > device at each time but doesn't close.
> > It sounds like a bug in mplayer to me.
> 
> ... or the first control handle keeps opened and blocks it.

mplayer indeed leaks the mixer handle.  This happens if setting the
volume fails, i.e., _after_ this message:
> > > > > > > alsa-control: error setting left channel, Operation not permitted


Best regards,
Clemens
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