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/wm8990.c b/sound/soc/codecs/wm8990.c
index 6b2778632d5e..f93c0955ed9d 100644
--- a/sound/soc/codecs/wm8990.c
+++ b/sound/soc/codecs/wm8990.c
@@ -116,7 +116,7 @@ static inline unsigned int wm8990_read_reg_cache(struct snd_soc_codec *codec,
         unsigned int reg)
 {
         u16 *cache = codec->reg_cache;
-        BUG_ON(reg > (ARRAY_SIZE(wm8990_reg)) - 1);
+        BUG_ON(reg >= ARRAY_SIZE(wm8990_reg));
         return cache[reg];
 }
 
@@ -129,7 +129,7 @@ static inline void wm8990_write_reg_cache(struct snd_soc_codec *codec,
         u16 *cache = codec->reg_cache;
 
         /* Reset register and reserved registers are uncached */
-        if (reg == 0 || reg > ARRAY_SIZE(wm8990_reg) - 1)
+        if (reg == 0 || reg >= ARRAY_SIZE(wm8990_reg))
                 return;
 
         cache[reg] = value;