Patch "ASoC: wm5110: Fix PGA clear when disabling DRE" has been added to the 4.4-stable tree

Patch "ASoC: wm5110: Fix PGA clear when disabling DRE" has been added to the 4.4-stable tree

[gregkh]

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

    ASoC: wm5110: Fix PGA clear when disabling DRE

to the 4.4-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:
     asoc-wm5110-fix-pga-clear-when-disabling-dre.patch
and it can be found in the queue-4.4 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 24338722cfa23fdf4e08c6189a11f7e3a902d86a Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Date: Wed, 6 Jan 2016 15:15:37 +0000
Subject: ASoC: wm5110: Fix PGA clear when disabling DRE

From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>

commit 24338722cfa23fdf4e08c6189a11f7e3a902d86a upstream.

We don't want to use a bypassed write in wm5110_clear_pga_volume,
we might disable the DRE whilst the CODEC is powered down. A
normal regmap_write will always go to the hardware (when not on
cache_only) even if the written value matches the cache. As using
a normal write will still achieve the desired behaviour of bring
the cache and hardware in sync, this patch updates the function
to use a normal write, which avoids issues when the CODEC is
powered down.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/soc/codecs/wm5110.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

--- a/sound/soc/codecs/wm5110.c
+++ b/sound/soc/codecs/wm5110.c
@@ -360,15 +360,13 @@ static int wm5110_hp_ev(struct snd_soc_d
 
 static int wm5110_clear_pga_volume(struct arizona *arizona, int output)
 {
-	struct reg_sequence clear_pga = {
-		ARIZONA_OUTPUT_PATH_CONFIG_1L + output * 4, 0x80
-	};
+	unsigned int reg = ARIZONA_OUTPUT_PATH_CONFIG_1L + output * 4;
 	int ret;
 
-	ret = regmap_multi_reg_write_bypassed(arizona->regmap, &clear_pga, 1);
+	ret = regmap_write(arizona->regmap, reg, 0x80);
 	if (ret)
 		dev_err(arizona->dev, "Failed to clear PGA (0x%x): %d\n",
-			clear_pga.reg, ret);
+			reg, ret);
 
 	return ret;
 }


Patches currently in stable-queue which might be from ckeepax@opensource.wolfsonmicro.com are

queue-4.4/asoc-wm5110-fix-pga-clear-when-disabling-dre.patch