diff options
| author | olivier moysan <olivier.moysan@st.com> | 2017-11-06 18:18:53 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2017-11-06 18:45:45 +0300 |
| commit | 98c8dc2fd59fdad77d26d7b0d7007776c5fbec16 (patch) | |
| tree | 53bb5f23c1e531df3ac87d31c21f711b51bff75f | |
| parent | 9036e4acc81700a51e5f42820ba4570bea9b6f48 (diff) | |
| download | linux-98c8dc2fd59fdad77d26d7b0d7007776c5fbec16.tar.xz | |
ASoC: stm32: spdifrx: fix control DMA error management
Fix DMA channel request error handling.
Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/stm/stm32_spdifrx.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/sound/soc/stm/stm32_spdifrx.c b/sound/soc/stm/stm32_spdifrx.c index d7dbe84d5eeb..b9bdefcd3e10 100644 --- a/sound/soc/stm/stm32_spdifrx.c +++ b/sound/soc/stm/stm32_spdifrx.c @@ -392,6 +392,12 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, { int ret; + spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl"); + if (IS_ERR(spdifrx->ctrl_chan)) { + dev_err(dev, "dma_request_slave_channel failed\n"); + return PTR_ERR(spdifrx->ctrl_chan); + } + spdifrx->dmab = devm_kzalloc(dev, sizeof(struct snd_dma_buffer), GFP_KERNEL); if (!spdifrx->dmab) @@ -406,12 +412,6 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, return ret; } - spdifrx->ctrl_chan = dma_request_chan(dev, "rx-ctrl"); - if (!spdifrx->ctrl_chan) { - dev_err(dev, "dma_request_slave_channel failed\n"); - return -EINVAL; - } - spdifrx->slave_config.direction = DMA_DEV_TO_MEM; spdifrx->slave_config.src_addr = (dma_addr_t)(spdifrx->phys_addr + STM32_SPDIFRX_CSR); @@ -423,7 +423,6 @@ static int stm32_spdifrx_dma_ctrl_register(struct device *dev, &spdifrx->slave_config); if (ret < 0) { dev_err(dev, "dmaengine_slave_config returned error %d\n", ret); - dma_release_channel(spdifrx->ctrl_chan); spdifrx->ctrl_chan = NULL; } @@ -962,7 +961,7 @@ static int stm32_spdifrx_probe(struct platform_device *pdev) return 0; error: - if (spdifrx->ctrl_chan) + if (!IS_ERR(spdifrx->ctrl_chan)) dma_release_channel(spdifrx->ctrl_chan); if (spdifrx->dmab) snd_dma_free_pages(spdifrx->dmab); |