[PATCH] ASoC: Return -1 instead of -EINVAL to ensure consistency

[Dimitris Papastamos <dp@opensource.wolfsonmicro.com>]

The code can't really cope with I/O errors, so it would be better
to be consistent throughout all cache functions and return -1 instead
of -EINVAL.

The return value of snd_soc_read(...) is mostly checked in the probe
function and nowhere else.
---
 sound/soc/soc-cache.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/soc-cache.c b/sound/soc/soc-cache.c
index 28bf1ff..6702a3d 100644
--- a/sound/soc/soc-cache.c
+++ b/sound/soc/soc-cache.c
@@ -228,7 +228,7 @@ static unsigned int snd_soc_8_16_read(struct snd_soc_codec *codec,
 	if (reg >= codec->driver->reg_cache_size ||
 	    snd_soc_codec_volatile_register(codec, reg)) {
 		if (codec->cache_only)
-			return -EINVAL;
+			return -1;
 
 		return codec->hw_read(codec, reg);
 	} else {
@@ -455,7 +455,7 @@ static unsigned int snd_soc_16_16_read(struct snd_soc_codec *codec,
 	if (reg >= codec->driver->reg_cache_size ||
 	    snd_soc_codec_volatile_register(codec, reg)) {
 		if (codec->cache_only)
-			return -EINVAL;
+			return -1;
 
 		return codec->hw_read(codec, reg);
 	}
-- 
1.7.3