linux-kernel - Re: pci_pm_runtime_suspend(): azx_runtime_suspend+0x0/0x50 [snd_hda

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Message-ID: <20121212105143.GA9252@liondog.tnic>
Date:	Wed, 12 Dec 2012 11:51:43 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Takashi Iwai <tiwai@...e.de>, lkml <linux-kernel@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Mengdong Lin <mengdong.lin@...el.com>
Subject: Re: pci_pm_runtime_suspend(): azx_runtime_suspend+0x0/0x50
 [snd_hda_intel] returns -11

On Wed, Dec 12, 2012 at 12:44:33AM +0100, Rafael J. Wysocki wrote:
> On Tuesday, December 11, 2012 06:55:08 PM Borislav Petkov wrote:
> > On Tue, Dec 11, 2012 at 06:48:23PM +0100, Rafael J. Wysocki wrote:
> > > Boris, please send the output of "lspci -vvv' from that box.
> > 
> > Attached.
> 
> So the audio is a Root Complex Integrated Endpoind and there shouldn't be
> any problems with it related to PCIe ports power management.
> 
> It looks like azx_runtime_suspend() is new in 3.7 and it returns -EAGAIN
> to indicate that it actually can't be suspended (if my understanding the
> code is correct).  However, it shouldn't do that, because that causes
> the runtime PM core to repeat the attempts.  It rather should implement
> a .runtime_idle() callback returning an error code instead.
> 
> Those messages are just noise, though.

Adding author of this (b8dfc4624162c0547d7f36a9df48da2d9b4bd58a).

Thanks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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