ASoC: Fix lm4857 control

Commit 4eaa9819dc08d7bfd1065ce530e31b18a119dcaf changed semantics of
private_value member of kcontrol. This resulted in inability to control
amplifier and subsequently in very low output volume.

Tested-by: Johannes Schauer <josch@pyneo.org>
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 10 insertions, 6 deletions

diff --git a/sound/soc/s3c24xx/neo1973_wm8753.c b/sound/soc/s3c24xx/neo1973_wm8753.c
index 289fadf60b10..906709e6dd5f 100644
--- a/sound/soc/s3c24xx/neo1973_wm8753.c
+++ b/sound/soc/s3c24xx/neo1973_wm8753.c
@@ -345,9 +345,11 @@ static void lm4857_write_regs(void)
 static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
         struct snd_ctl_elem_value *ucontrol)
 {
-        int reg = kcontrol->private_value & 0xFF;
-        int shift = (kcontrol->private_value >> 8) & 0x0F;
-        int mask = (kcontrol->private_value >> 16) & 0xFF;
+        struct soc_mixer_control *mc =
+                (struct soc_mixer_control *)kcontrol->private_value;
+        int reg = mc->reg;
+        int shift = mc->shift;
+        int mask = mc->max;
 
         pr_debug("Entered %s\n", __func__);
 
@@ -358,9 +360,11 @@ static int lm4857_get_reg(struct snd_kcontrol *kcontrol,
 static int lm4857_set_reg(struct snd_kcontrol *kcontrol,
         struct snd_ctl_elem_value *ucontrol)
 {
-        int reg = kcontrol->private_value & 0xFF;
-        int shift = (kcontrol->private_value >> 8) & 0x0F;
-        int mask = (kcontrol->private_value >> 16) & 0xFF;
+        struct soc_mixer_control *mc =
+                (struct soc_mixer_control *)kcontrol->private_value;
+        int reg = mc->reg;
+        int shift = mc->shift;
+        int mask = mc->max;
 
         if (((lm4857_regs[reg] >> shift) & mask) ==
                 ucontrol->value.integer.value[0])