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ASoC: don't dereference NULL pcm_{new,free}

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Not all platform drivers have pcm_{new,free} callbacks. Seen with a
"snd-soc-dummy" codec from sound/soc/rockchip/rk3399_gru_sound.c.

Fixes: 99b04f4c40 ("ASoC: add Component level pcm_new/pcm_free")
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Brian Norris 2017-03-08 15:18:54 -08:00 committed by Mark Brown
parent c1ae3cfa0e
commit d6c098a1db
1 changed files with 6 additions and 2 deletions
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8
sound/soc/soc-core.c
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@ -3326,7 +3326,10 @@ static int snd_soc_platform_drv_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
struct snd_soc_platform *platform = rtd->platform;
return platform->driver->pcm_new(rtd);
if (platform->driver->pcm_new)
return platform->driver->pcm_new(rtd);
else
return 0;
}
static void snd_soc_platform_drv_pcm_free(struct snd_pcm *pcm)
@ -3334,7 +3337,8 @@ static void snd_soc_platform_drv_pcm_free(struct snd_pcm *pcm)
struct snd_soc_pcm_runtime *rtd = pcm->private_data;
struct snd_soc_platform *platform = rtd->platform;
platform->driver->pcm_free(pcm);
if (platform->driver->pcm_free)
platform->driver->pcm_free(pcm);
}
/**