Date: Fri, 13 Aug 2010 00:07:37 +0200
Message-ID: <s5hzkwrscwm.wl%tiwai@suse.de>
From: Takashi Iwai <tiwai@suse.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Paris <eparis@redhat.com>, Al Viro <viro@zeniv.linux.org.uk>,
        Jiri Slaby <jirislaby@gmail.com>, Pekka Enberg <penberg@kernel.org>,
        Thomas Meyer <thomas@m3y3r.de>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: 2.6.36: Sound stop working
In-Reply-To: <AANLkTi=s-KFuUnmNaDN6OYaiwZiaBLbYB5MCwde7tvvw@mail.gmail.com>
References: <201008122200.05598.thomas@m3y3r.de>
	<AANLkTikZ4wA4jJ0AnWMXYmgWVBShRW=Yu67J0QvebRx0@mail.gmail.com>
	<s5hpqxntw64.wl%tiwai@suse.de>
	<4C646110.1040104@gmail.com>
	<s5hbp97ttt5.wl%tiwai@suse.de>
	<AANLkTi=s-KFuUnmNaDN6OYaiwZiaBLbYB5MCwde7tvvw@mail.gmail.com>
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At Thu, 12 Aug 2010 14:41:51 -0700,
Linus Torvalds wrote:
> 
> On Thu, Aug 12, 2010 at 2:17 PM, Takashi Iwai <tiwai@suse.de> wrote:
> > At Thu, 12 Aug 2010 23:01:04 +0200,
> > Jiri Slaby wrote:
> >>
> >> Probably I got into this problem yesterday. Found out that PA fails to
> >> open /dev/snd/pcmC0D0p _second_ time. It opens it, then closes, then
> >> opens it again and gets EBUSY. aplay is OK.
> >
> > Yes, I can also confirm that it's broken on my machine in the same
> > way now :)  PA log shows that the succeeding open failed.
> >
> > PA tries to do quick open/close of the same device to figure out which
> > configuration is available at start-up.  This implies that the
> > fs/notify commits touching the open/close stuff can be the culprit.
> 
> Yeah. The f_count stuff is disgusting. This revert patch makes things
> work for me again.

It makes working for me, too.


thanks,

Takashi
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