Patch "ALSA: hda - Fix pincfg at resume on Lenovo T470 dock" has been added to the 4.15-stable tree

Patch "ALSA: hda - Fix pincfg at resume on Lenovo T470 dock" has been added to the 4.15-stable tree

[gregkh]

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 <stable@vger.kernel.org> know about it.


>From 71db96ddfa72671bd43cacdcc99ca178d90ba267 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 26 Feb 2018 15:36:38 +0100
Subject: ALSA: hda - Fix pincfg at resume on Lenovo T470 dock

From: Takashi Iwai <tiwai@suse.de>

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
Fixes: 61fcf8ece9b6 ("ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform")
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/patch_realtek.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -4875,13 +4875,14 @@ static void alc_fixup_tpt470_dock(struct
 
 	if (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 tiwai@suse.de 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