linux-kernel - Re: ALSA/usb-audio: snd_usb_autoresume possible recursive locking detected

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Message-ID: <s5h6142kwtm.wl-tiwai@suse.de>
Date:	Wed, 26 Aug 2015 15:23:33 +0200
From:	Takashi Iwai <tiwai@...e.de>
To:	Alexander Kuleshov <kuleshovmail@...il.com>
Cc:	Jaroslav Kysela <perex@...ex.cz>, alsa-devel@...a-project.org,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: ALSA/usb-audio: snd_usb_autoresume possible recursive locking detected

On Wed, 26 Aug 2015 15:16:43 +0200,
Alexander Kuleshov wrote:
> 
> On 08-26-15, Takashi Iwai wrote:
> > 
> > Ah, sorry, this was the missing refcount increment at resume.
> > Below is the revised patch.  In the final form, it'll be split to a
> > few parts, but now it's all folded for ease of testing.
> > 
> 
> Hello Takashi,
> 
> sorry for delay, just made a test with the last patch and finally
> dmesg is clear.

Great, thanks for many tests!

I tried the autopm on my machine, but strangely I couldn't reproduce
this lockdep warning.  Could you give your kconfig?  I'd like to
check.


Takashi
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