ASoC: max9877: Update register if either val or val2 is changed

In the case of ((max9877_regs[reg] >> shift) & mask) != val
but ((max9877_regs[reg2] >> shift) & mask) == val2,
current code does not update the registers.

Fix the logic to update registers if either val or val2 is changed.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c
index 9e7e964a5fa3fd1a8824c17c9dad4bbc60923909..dcf6f2a1600ae5726a60d0a7e11ef6e53d57d466 100644 (file)
--- a/sound/soc/codecs/max9877.c
+++ b/sound/soc/codecs/max9877.c
@@ -106,13 +106,13 @@ static int max9877_set_2reg(struct snd_kcontrol *kcontrol,
        unsigned int mask = mc->max;
        unsigned int val = (ucontrol->value.integer.value[0] & mask);
        unsigned int val2 = (ucontrol->value.integer.value[1] & mask);
-       unsigned int change = 1;
+       unsigned int change = 0;
 
-       if (((max9877_regs[reg] >> shift) & mask) == val)
-               change = 0;
+       if (((max9877_regs[reg] >> shift) & mask) != val)
+               change = 1;
 
-       if (((max9877_regs[reg2] >> shift) & mask) == val2)
-               change = 0;
+       if (((max9877_regs[reg2] >> shift) & mask) != val2)
+               change = 1;
 
        if (change) {
                max9877_regs[reg] &= ~(mask << shift);