diff options
| author |   Xiubo Li <Li.Xiubo@freescale.com> | 2013-12-17 15:16:40 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@linaro.org> | 2013-12-17 11:17:56 +0000 |
| commit | 2b67f8ba41ac7acf01c8d5c742c713ead8b589cd (patch) | |
| tree | 4269cbf8661a95b669ec0086253f949ac4108e28 /sound/soc/soc-generic-dmaengine-pcm.c | |
| parent | ASoC: dmaengine: fix deferred probe detection (diff) | |
| download | linux-dev-2b67f8ba41ac7acf01c8d5c742c713ead8b589cd.tar.xz linux-dev-2b67f8ba41ac7acf01c8d5c742c713ead8b589cd.zip | |
ASoC: dmaengine: Add config parameter NULL check.
Because the "ASoC: dmaengine-pcm: Provide default config" has provided
us one defualt config of DMA. When using this, the config parameter of
devm_snd_dmaengine_pcm_register() will be NULL, so here we need to have
a check before using it.
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/soc-generic-dmaengine-pcm.c')
| -rw-r--r-- | sound/soc/soc-generic-dmaengine-pcm.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index 7483922f6ee3..2a6c569d991f 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -299,7 +299,7 @@ static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm, !dev->of_node) return 0; - if (config->dma_dev) { + if (config && config->dma_dev) { /* * If this warning is seen, it probably means that your Linux * device structure does not match your HW device structure. @@ -317,7 +317,7 @@ static int dmaengine_pcm_request_chan_of(struct dmaengine_pcm *pcm, name = "rx-tx"; else name = dmaengine_pcm_dma_channel_names[i]; - if (config->chan_names[i]) + if (config && config->chan_names[i]) name = config->chan_names[i]; chan = dma_request_slave_channel_reason(dev, name); if (IS_ERR(chan)) { |