At Sun, 16 Feb 2014 11:45:28 -0800,
<[email protected]> wrote:
>
>
> This is a note to let you know that I've just added the patch titled
>
> ALSA: hda/realtek - Avoid invalid COEFs for ALC271X
>
> to the 3.12-stable tree which can be found at:
>
> http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
>
> The filename of the patch is:
> alsa-hda-realtek-avoid-invalid-coefs-for-alc271x.patch
> and it can be found in the queue-3.12 subdirectory.
>
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <[email protected]> know about it.
Please drop this. This commit was reverted due to a regression later
by the upstream commit 2078600b1f8fc68b02f6ebdda1759fb0c9f51afb
ALSA: Revert "ALSA: hda/realtek - Avoid invalid COEFs for ALC271X"
(which was already merged to Linus tree now).
thanks,
Takashi
>
>
> >From d3c56568f43807135f2c2a09582a69f809f0d8b7 Mon Sep 17 00:00:00 2001
> From: Takashi Iwai <[email protected]>
> Date: Mon, 3 Feb 2014 09:56:13 +0100
> Subject: ALSA: hda/realtek - Avoid invalid COEFs for ALC271X
>
> From: Takashi Iwai <[email protected]>
>
> commit d3c56568f43807135f2c2a09582a69f809f0d8b7 upstream.
>
> We've seen often problems after suspend/resume on Acer Aspire One
> AO725 with ALC271X codec as reported in kernel bugzilla, and it turned
> out that some COEFs doesn't work and triggers the codec communication
> stall.
>
> Since these magic COEF setups are specific to ALC269VB for some PLL
> configurations, the machine works even without these manual
> adjustment. So, let's simply avoid applying them for ALC271X.
>
> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=52181
> Signed-off-by: Takashi Iwai <[email protected]>
> Signed-off-by: Greg Kroah-Hartman <[email protected]>
>
> ---
> sound/pci/hda/patch_realtek.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> --- a/sound/pci/hda/patch_realtek.c
> +++ b/sound/pci/hda/patch_realtek.c
> @@ -4152,6 +4152,9 @@ static void alc269_fill_coef(struct hda_
>
> if (spec->codec_variant != ALC269_TYPE_ALC269VB)
> return;
> + /* ALC271X doesn't seem to support these COEFs (bko#52181) */
> + if (!strcmp(codec->chip_name, "ALC271X"))
> + return;
>
> if ((alc_get_coef0(codec) & 0x00ff) < 0x015) {
> alc_write_coef_idx(codec, 0xf, 0x960b);
>
>
> Patches currently in stable-queue which might be from [email protected] are
>
> queue-3.12/alsa-hda-add-missing-mixer-widget-for-ad1983.patch
> queue-3.12/alsa-hda-realtek-avoid-invalid-coefs-for-alc271x.patch
> queue-3.12/alsa-usb-audio-add-missing-kconfig-dependecy.patch
> queue-3.12/alsa-hda-fix-missing-vref-setup-for-mac-pro-1-1.patch
> queue-3.12/alsa-hda-fix-silent-output-on-toshiba-satellite-l40.patch
> queue-3.12/alsa-hda-improve-loopback-path-lookups-for-ad1983.patch
>
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