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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-06-13 16:24:04 +0100
committerJaroslav Kysela <perex@perex.cz>2008-06-16 09:32:27 +0200
commitabb68c26ba15f8e84e580a40c0b1bc349cb534b0 (patch)
tree25afa44a648a8e11cd26a657d694eacc345075df /sound
parentaafc4412be31306e5c38bd4e4581066507503adc (diff)
ALSA: ASoC: Check for exact register match in wm97xx_reset()
To provide added robustness in case an AC97 controller reads back all zeros in error cases check for an exact match when testing to see if resets have brought the codec back. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/wm9712.c4
-rw-r--r--sound/soc/codecs/wm9713.c4
2 files changed, 4 insertions, 4 deletions
diff --git a/sound/soc/codecs/wm9712.c b/sound/soc/codecs/wm9712.c
index 28ac66f6b6b2..47390113bd0e 100644
--- a/sound/soc/codecs/wm9712.c
+++ b/sound/soc/codecs/wm9712.c
@@ -589,12 +589,12 @@ static int wm9712_reset(struct snd_soc_codec *codec, int try_warm)
{
if (try_warm && soc_ac97_ops.warm_reset) {
soc_ac97_ops.warm_reset(codec->ac97);
- if (!(ac97_read(codec, 0) & 0x8000))
+ if (ac97_read(codec, 0) == wm9712_reg[0])
return 1;
}
soc_ac97_ops.reset(codec->ac97);
- if (ac97_read(codec, 0) & 0x8000)
+ if (ac97_read(codec, 0) != wm9712_reg[0])
goto err;
return 0;
diff --git a/sound/soc/codecs/wm9713.c b/sound/soc/codecs/wm9713.c
index aba330118784..0db963747369 100644
--- a/sound/soc/codecs/wm9713.c
+++ b/sound/soc/codecs/wm9713.c
@@ -1076,12 +1076,12 @@ int wm9713_reset(struct snd_soc_codec *codec, int try_warm)
{
if (try_warm && soc_ac97_ops.warm_reset) {
soc_ac97_ops.warm_reset(codec->ac97);
- if (!(ac97_read(codec, 0) & 0x8000))
+ if (ac97_read(codec, 0) == wm9713_reg[0])
return 1;
}
soc_ac97_ops.reset(codec->ac97);
- if (ac97_read(codec, 0) & 0x8000)
+ if (ac97_read(codec, 0) != wm9713_reg[0])
return -EIO;
return 0;
}