From: Codrin Ciubotariu codrin.ciubotariu@microchip.com
[ Upstream commit 9a1e13440a4f2e7566fd4c5eae6a53e6400e08a4 ]
Even if struct snd_dmaengine_pcm_config is used, prepare_slave_config() callback might not be set. Check if this callback is set before using it.
Fixes: fa654e085300 ("ASoC: dmaengine-pcm: Provide default config") Signed-off-by: Codrin Ciubotariu codrin.ciubotariu@microchip.com Link: https://lore.kernel.org/r/20220307122202.2251639-2-codrin.ciubotariu@microch... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- sound/soc/soc-generic-dmaengine-pcm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 5552c66ca642..ca4b17bd95d1 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -91,10 +91,10 @@ static int dmaengine_pcm_hw_params(struct snd_pcm_substream *substream,
memset(&slave_config, 0, sizeof(slave_config));
- if (!pcm->config) - prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config; - else + if (pcm->config && pcm->config->prepare_slave_config) prepare_slave_config = pcm->config->prepare_slave_config; + else + prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config;
if (prepare_slave_config) { ret = prepare_slave_config(substream, params, &slave_config);