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/wm8753.c b/sound/soc/codecs/wm8753.c
index 7283178e0eb5..5a1c1fca120f 100644
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -97,7 +97,7 @@ static inline unsigned int wm8753_read_reg_cache(struct snd_soc_codec *codec,
         unsigned int reg)
 {
         u16 *cache = codec->reg_cache;
-        if (reg < 1 || reg > (ARRAY_SIZE(wm8753_reg) + 1))
+        if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
                 return -1;
         return cache[reg - 1];
 }
@@ -109,7 +109,7 @@ static inline void wm8753_write_reg_cache(struct snd_soc_codec *codec,
         unsigned int reg, unsigned int value)
 {
         u16 *cache = codec->reg_cache;
-        if (reg < 1 || reg > 0x3f)
+        if (reg < 1 || reg >= (ARRAY_SIZE(wm8753_reg) + 1))
                 return;
         cache[reg - 1] = value;
 }