Patch "Revert "ALSA: hda - Add mute-LED mode control to Thinkpad"" has been added to the 4.0-stable tree

Patch "Revert "ALSA: hda - Add mute-LED mode control to Thinkpad"" has been added to the 4.0-stable tree

[gregkh]

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

    Revert "ALSA: hda - Add mute-LED mode control to Thinkpad"

to the 4.0-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:
     revert-alsa-hda-add-mute-led-mode-control-to-thinkpad.patch
and it can be found in the queue-4.0 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 3530febb5c7636f6b26d15637f68296804d26491 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Sun, 24 May 2015 08:27:52 +0200
Subject: Revert "ALSA: hda - Add mute-LED mode control to Thinkpad"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Takashi Iwai <tiwai@suse.de>

commit 3530febb5c7636f6b26d15637f68296804d26491 upstream.

This reverts commit 7290006d8c0900c56d8c58428134f02c35109d17.

Through the regression report, it was revealed that the
tpacpi_led_set() call to thinkpad_acpi helper doesn't only toggle the
mute LED but actually mutes the sound.  This is contradiction to the
expectation, and rather confuses user.

According to Henrique, it's not trivial to judge which TP model
behaves "LED-only" and which model does whatever more intrusive, as
Lenovo's implementations vary model by model.  So, from the safety
reason, we should revert the patch for now.

Reported-by: Martin Steigerwald <martin@lichtvoll.de>
Cc: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/pci/hda/thinkpad_helper.c |    1 -
 1 file changed, 1 deletion(-)

--- a/sound/pci/hda/thinkpad_helper.c
+++ b/sound/pci/hda/thinkpad_helper.c
@@ -72,7 +72,6 @@ static void hda_fixup_thinkpad_acpi(stru
 		if (led_set_func(TPACPI_LED_MUTE, false) >= 0) {
 			old_vmaster_hook = spec->vmaster_mute.hook;
 			spec->vmaster_mute.hook = update_tpacpi_mute_led;
-			spec->vmaster_mute_enum = 1;
 			removefunc = false;
 		}
 		if (led_set_func(TPACPI_LED_MICMUTE, false) >= 0) {


Patches currently in stable-queue which might be from tiwai@suse.de are

queue-4.0/revert-alsa-hda-add-mute-led-mode-control-to-thinkpad.patch
queue-4.0/alsa-usb-audio-add-quirk-for-ms-lifecam-hd-3000.patch
queue-4.0/alsa-usb-audio-add-quirk-for-ms-lifecam-studio.patch
queue-4.0/alsa-hda-realtek-alc292-dock-fix-for-thinkpad-l450.patch
queue-4.0/alsa-hda-add-headset-mic-quirk-for-dell-inspiron-5548.patch
queue-4.0/alsa-hda-add-conexant-codecs-cx20721-cx20722-cx20723-and-cx20724.patch
queue-4.0/alsa-hda-fix-noise-on-amd-radeon-290x-controller.patch
queue-4.0/alsa-hda-add-headphone-quirk-for-lifebook-e752.patch