Patch "ALSA: hda - Fix pincfg at resume on Lenovo T470 dock" has been added to the 4.15-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
ALSA: hda - Fix pincfg at resume on Lenovo T470 dock
to the 4.15-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-fix-pincfg-at-resume-on-lenovo-t470-dock.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
71db96ddfa72671bd43cacdcc99ca178d90ba267Mon Sep 17 00:00:00 2001
From: Takashi Iwai <[email protected]>
Date: Mon, 26 Feb 2018 15:36:38 +0100
Subject: ALSA: hda - Fix pincfg at resume on Lenovo T470 dock
From: Takashi Iwai <[email protected]>
commit 71db96ddfa72671bd43cacdcc99ca178d90ba267 upstream.
We've added a quirk to enable the recent Lenovo dock support, where it overwrites the pin configs of NID 0x17 and 19, not only updating the pin config cache. It works right after the boot, but the problem is that the pin configs are occasionally cleared when the machine goes to PM. Meanwhile the quirk writes the pin configs only at the pre-probe, so this won't be applied any longer.
For addressing that issue, this patch moves the code to overwrite the pin configs into HDA_FIXUP_ACT_INIT section so that it's always applied at both probe and resume time.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195161
--- sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
sound/pci/hda/patch_realtek.c +2 -1
@@ -4875,13 +4875,14 @@ static void alc_fixup_tpt470_dock(structif (action ==HDA_FIXUP_ACT_PRE_PROBE ) { spec->parse_flags =HDA_PINCFG_NO_HP_FIXUP ; +snd_hda_apply_pincfgs (codec, pincfgs); + }else if (action ==HDA_FIXUP_ACT_INIT ) {/* Enable DOCK device */ snd_hda_codec_write (codec,0x17 ,0 ,AC_VERB_SET_CONFIG_DEFAULT_BYTES_3 ,0 );/* Enable DOCK device */ snd_hda_codec_write (codec,0x19 ,0 ,AC_VERB_SET_CONFIG_DEFAULT_BYTES_3 ,0 ); -snd_hda_apply_pincfgs (codec, pincfgs); } }
Patches currently in stable-queue which might be from [email protected] are
queue-4.15/alsa-hda-add-a-power_save-blacklist.patch queue-4.15/alsa-hda-fix-pincfg-at-resume-on-lenovo-t470-dock.patch queue-4.15/alsa-x86-fix-missing-spinlock-and-mutex-initializations.patch queue-4.15/alsa-usb-audio-add-a-quirck-for-b-w-px-headphones.patch queue-4.15/alsa-control-fix-memory-corruption-risk-in-snd_ctl_elem_read.patch