Patch "ALSA: hda - Fix a failure of micmute led when having multi adcs" has been added to the 4.8-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    ALSA: hda - Fix a failure of micmute led when having multi adcs

to the 4.8-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-a-failure-of-micmute-led-when-having-multi-adcs.patch
and it can be found in the queue-4.8 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 4875a5f7218068cdeea5f998330dfa3d118b2fea Mon Sep 17 00:00:00 2001
From: Hui Wang <hui.wang@canonical.com>
Date: Tue, 11 Oct 2016 10:48:58 +0800
Subject: ALSA: hda - Fix a failure of micmute led when having multi adcs

From: Hui Wang <hui.wang@canonical.com>

commit 4875a5f7218068cdeea5f998330dfa3d118b2fea upstream.

On a Dell laptop, there is no global adcs for all input devices, so
the input devices use the different adc, as a result, dyn_adc_switch
is set to true.

In this situation, it is safe to control the micmute led according to
user's choice of muting/unmuting the current input device, since only
current input device path is active, while other input device paths
are inactive and powered down.

Fixes: 00ef99408b6c ('ALSA: hda - add mic mute led hook for dell machines')
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/dell_wmi_helper.c |    2 +-
 sound/pci/hda/thinkpad_helper.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/hda/dell_wmi_helper.c
+++ b/sound/pci/hda/dell_wmi_helper.c
@@ -49,7 +49,7 @@ static void alc_fixup_dell_wmi(struct hd
 		removefunc = true;
 		if (dell_led_set_func(DELL_LED_MICMUTE, false) >= 0) {
 			dell_led_value = 0;
-			if (spec->gen.num_adc_nids > 1)
+			if (spec->gen.num_adc_nids > 1 && !spec->gen.dyn_adc_switch)
 				codec_dbg(codec, "Skipping micmute LED control due to several ADCs");
 			else {
 				dell_old_cap_hook = spec->gen.cap_sync_hook;
--- a/sound/pci/hda/thinkpad_helper.c
+++ b/sound/pci/hda/thinkpad_helper.c
@@ -62,7 +62,7 @@ static void hda_fixup_thinkpad_acpi(stru
 			removefunc = false;
 		}
 		if (led_set_func(TPACPI_LED_MICMUTE, false) >= 0) {
-			if (spec->num_adc_nids > 1)
+			if (spec->num_adc_nids > 1 && !spec->dyn_adc_switch)
 				codec_dbg(codec,
 					  "Skipping micmute LED control due to several ADCs");
 			else {


Patches currently in stable-queue which might be from hui.wang@canonical.com are

queue-4.8/alsa-hda-fix-a-failure-of-micmute-led-when-having-multi-adcs.patch