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authorArnd Bergmann <arnd@arndb.de>2017-01-16 14:27:57 +0100
committerTakashi Iwai <tiwai@suse.de>2017-01-16 14:33:42 +0100
commit8b169cb27c8267cd344fd71c2067ea864dd4c2e7 (patch)
tree670194069d4dc46c631186fde50cbc70bf238f59 /sound/mips
parenta535ad57d0e6b959cd79914a1127caade36a9459 (diff)
downloadlinux-8b169cb27c8267cd344fd71c2067ea864dd4c2e7.tar.bz2
ALSA: mips: avoid potential uninitialized variable use
MIPS allmodconfig results in this warning: sound/mips/hal2.c: In function 'hal2_gain_get': sound/mips/hal2.c:224:35: error: 'r' may be used uninitialized in this function [-Werror=maybe-uninitialized] sound/mips/hal2.c:223:35: error: 'l' may be used uninitialized in this function [-Werror=maybe-uninitialized] sound/mips/hal2.c: In function 'hal2_gain_put': sound/mips/hal2.c:260:13: error: 'new' may be used uninitialized in this function [-Werror=maybe-uninitialized] sound/mips/hal2.c:260:13: error: 'old' may be used uninitialized in this function [-Werror=maybe-uninitialized] Returning an error for all unexpected cases shuts up the warning Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/mips')
-rw-r--r--sound/mips/hal2.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/mips/hal2.c b/sound/mips/hal2.c
index ede449f0b50d..00fc9241d266 100644
--- a/sound/mips/hal2.c
+++ b/sound/mips/hal2.c
@@ -219,6 +219,8 @@ static int hal2_gain_get(struct snd_kcontrol *kcontrol,
l = (tmp >> H2I_C2_L_GAIN_SHIFT) & 15;
r = (tmp >> H2I_C2_R_GAIN_SHIFT) & 15;
break;
+ default:
+ return -EINVAL;
}
ucontrol->value.integer.value[0] = l;
ucontrol->value.integer.value[1] = r;
@@ -256,6 +258,8 @@ static int hal2_gain_put(struct snd_kcontrol *kcontrol,
new |= (r << H2I_C2_R_GAIN_SHIFT);
hal2_i_write32(hal2, H2I_ADC_C2, new);
break;
+ default:
+ return -EINVAL;
}
return old != new;
}