Patch "ALSA: usb-audio: correct the value cache check." has been added to the 4.2-stable tree

Patch "ALSA: usb-audio: correct the value cache check." has been added to the 4.2-stable tree

[gregkh]

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

    ALSA: usb-audio: correct the value cache check.

to the 4.2-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-usb-audio-correct-the-value-cache-check.patch
and it can be found in the queue-4.2 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 6aa6925cad06159dc6e25857991bbc4960821242 Mon Sep 17 00:00:00 2001
From: Yao-Wen Mao <yaowen@google.com>
Date: Fri, 28 Aug 2015 16:33:25 +0800
Subject: ALSA: usb-audio: correct the value cache check.

From: Yao-Wen Mao <yaowen@google.com>

commit 6aa6925cad06159dc6e25857991bbc4960821242 upstream.

The check of cval->cached should be zero-based (including master channel).

Signed-off-by: Yao-Wen Mao <yaowen@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/usb/mixer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -2522,7 +2522,7 @@ static int restore_mixer_value(struct us
 		for (c = 0; c < MAX_CHANNELS; c++) {
 			if (!(cval->cmask & (1 << c)))
 				continue;
-			if (cval->cached & (1 << c)) {
+			if (cval->cached & (1 << (c + 1))) {
 				err = snd_usb_set_cur_mix_value(cval, c + 1, idx,
 							cval->cache_val[idx]);
 				if (err < 0)


Patches currently in stable-queue which might be from yaowen@google.com are

queue-4.2/alsa-usb-audio-correct-the-value-cache-check.patch