linux-kernel - Re: [3.6.9 -> 3.7.1 regression] sound: snd_hda

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Date:	Wed, 09 Jan 2013 11:00:26 +0100
From:	Takashi Iwai <tiwai@...e.de>
To:	Vincent Blut <vincent.debian@...e.fr>
Cc:	Maurizio Avogadro <mavoga@...il.com>, alsa-devel@...a-project.org,
	linux-kernel@...r.kernel.org
Subject: Re: [3.6.9 -> 3.7.1 regression] sound: snd_hda_intel codec probing issue?

At Tue, 08 Jan 2013 21:25:21 +0100,
Vincent Blut wrote:
> 
> Le mardi 08 janvier 2013 à 13:56 +0100, Takashi Iwai a écrit :
> > At Tue, 08 Jan 2013 13:28:55 +0100,
> > From: Takashi Iwai <tiwai@...e.de>
> > Subject: [PATCH] ALSA: hda - Disable runtime D3 for Intel CPT & co
> > 
> > We've got a few bug reports that the runtime D3 results in the dead
> > HD-audio controller.  It seems that the problem is in a deeper level
> > than the sound driver itself, so as a temporal solution, disable the
> > feature for these controllers again.
> > 
> > Reported-by: Vincent Blut <vincent.debian@...e.fr>
> > Reported-by: Maurizio Avogadro <mavoga@...il.com>
> > Cc: <stable@...r.kernel.org> [v3.7]
> > Signed-off-by: Takashi Iwai <tiwai@...e.de>
> > ---
> >  sound/pci/hda/hda_intel.c | 13 ++++++++-----
> >  1 file changed, 8 insertions(+), 5 deletions(-)
> > 
> > diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
> > index cca8727..0b6aeba 100644
> > --- a/sound/pci/hda/hda_intel.c
> > +++ b/sound/pci/hda/hda_intel.c
> > @@ -573,9 +573,12 @@ enum {
> >  #define AZX_DCAPS_PM_RUNTIME	(1 << 26)	/* runtime PM support */
> >  
> >  /* quirks for Intel PCH */
> > -#define AZX_DCAPS_INTEL_PCH \
> > +#define AZX_DCAPS_INTEL_PCH_NOPM \
> >  	(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
> > -	 AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME)
> > +	 AZX_DCAPS_COUNT_LPIB_DELAY)
> > +
> > +#define AZX_DCAPS_INTEL_PCH \
> > +	(AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_PM_RUNTIME)
> >  
> >  /* quirks for ATI SB / AMD Hudson */
> >  #define AZX_DCAPS_PRESET_ATI_SB \
> > @@ -3586,13 +3589,13 @@ static void azx_remove(struct pci_dev *pci)
> >  static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
> >  	/* CPT */
> >  	{ PCI_DEVICE(0x8086, 0x1c20),
> > -	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
> > +	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
> >  	/* PBG */
> >  	{ PCI_DEVICE(0x8086, 0x1d20),
> > -	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
> > +	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
> >  	/* Panther Point */
> >  	{ PCI_DEVICE(0x8086, 0x1e20),
> > -	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
> > +	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
> >  	/* Lynx Point */
> >  	{ PCI_DEVICE(0x8086, 0x8c20),
> >  	  .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
> 
> Well, my sound controller behaves nicely with the above quirk.
> 
> Tested-by: Vincent Blut <vincent.debian@...e.fr>

OK, I queued the patch now.


thanks,

Takashi
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