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| author | Arnd Bergmann <arnd@arndb.de> | 2018-11-02 16:18:21 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-11-05 11:37:39 +0100 |
| commit | 576ce4075bfa0f03e0e91a89eecc539b3b828b08 (patch) | |
| tree | 963590a4f744316fc785de067d1bc5ad19e32c62 /include/sound | |
| parent | ASoC: smd845: constify snd_soc_ops structure (diff) | |
| download | linux-576ce4075bfa0f03e0e91a89eecc539b3b828b08.tar.xz linux-576ce4075bfa0f03e0e91a89eecc539b3b828b08.zip | |
ASoC: wm97xx: fix uninitialized regmap pointer problem
gcc notices that without either the ac97 bus or the pdata, we never
initialize the regmap pointer, which leads to an uninitialized variable
access:
sound/soc/codecs/wm9712.c: In function 'wm9712_soc_probe':
sound/soc/codecs/wm9712.c:666:2: error: 'regmap' may be used uninitialized in this function [-Werror=maybe-uninitialized]
Since that configuration is invalid, it's better to return an error
here. I tried to avoid adding complexity to the conditions, and turned
the #ifdef into a regular if(IS_ENABLED()) check for readability.
This in turn requires moving some header file declarations out of
an #ifdef.
The same code is used in three drivers, all of which I'm changing
the same way.
Fixes: 2ed1a8e0ce8d ("ASoC: wm9712: add ac97 new bus support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/soc.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sound/soc.h b/include/sound/soc.h index f1dab1f4b194..5a8b84140f01 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -553,12 +553,12 @@ static inline void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count, } #endif -#ifdef CONFIG_SND_SOC_AC97_BUS struct snd_ac97 *snd_soc_alloc_ac97_component(struct snd_soc_component *component); struct snd_ac97 *snd_soc_new_ac97_component(struct snd_soc_component *component, unsigned int id, unsigned int id_mask); void snd_soc_free_ac97_component(struct snd_ac97 *ac97); +#ifdef CONFIG_SND_SOC_AC97_BUS int snd_soc_set_ac97_ops(struct snd_ac97_bus_ops *ops); int snd_soc_set_ac97_ops_of_reset(struct snd_ac97_bus_ops *ops, struct platform_device *pdev); |