ASoC: fixes to caching implementations

This patch takes fixes a number of bugs in the caching code used by
several ASoC codec drivers. Mostly off-by-one fixes.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 1b0ace0f4dca..4dc90d67530e 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -452,7 +452,7 @@ static unsigned int ac97_read(struct snd_soc_codec *codec,
         else {
                 reg = reg >> 1;
 
-                if (reg > (ARRAY_SIZE(wm9712_reg)))
+                if (reg >= (ARRAY_SIZE(wm9712_reg)))
                         return -EIO;
 
                 return cache[reg];
@@ -466,7 +466,7 @@ static int ac97_write(struct snd_soc_codec *codec, unsigned int reg,
 
         soc_ac97_ops.write(codec->ac97, reg, val);
         reg = reg >> 1;
-        if (reg <= (ARRAY_SIZE(wm9712_reg)))
+        if (reg < (ARRAY_SIZE(wm9712_reg)))
                 cache[reg] = val;
 
         return 0;