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| author | Arnd Bergmann <arnd@arndb.de> | 2017-01-16 14:27:57 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-01-16 14:33:42 +0100 |
| commit | 8b169cb27c8267cd344fd71c2067ea864dd4c2e7 (patch) | |
| tree | 670194069d4dc46c631186fde50cbc70bf238f59 /sound/mips | |
| parent | a535ad57d0e6b959cd79914a1127caade36a9459 (diff) | |
| download | linux-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.c | 4 |
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; } |