From: Lubomir Rintel <lkund...@v3.sk> [ Upstream commit 363c32701c7fdc8265a84b21a6a4f45d1202b9ca ]
With an invalid dma_slave_config set previously, mmp_tdma_prep_dma_cyclic() would detect an error whilst configuring the channel, but proceed happily on: [ 120.756530] mmp-tdma d42a0800.adma: mmp_tdma: unknown burst size. Signed-off-by: Lubomir Rintel <lkund...@v3.sk> Link: https://lore.kernel.org/r/20200419164912.670973-2-lkund...@v3.sk Signed-off-by: Vinod Koul <vk...@kernel.org> Signed-off-by: Sasha Levin <sas...@kernel.org> --- drivers/dma/mmp_tdma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/dma/mmp_tdma.c b/drivers/dma/mmp_tdma.c index e7d1e12bf4643..4d5b987e4841a 100644 --- a/drivers/dma/mmp_tdma.c +++ b/drivers/dma/mmp_tdma.c @@ -443,7 +443,8 @@ static struct dma_async_tx_descriptor *mmp_tdma_prep_dma_cyclic( if (!desc) goto err_out; - mmp_tdma_config_write(chan, direction, &tdmac->slave_config); + if (mmp_tdma_config_write(chan, direction, &tdmac->slave_config)) + goto err_out; while (buf < buf_len) { desc = &tdmac->desc_arr[i]; -- 2.20.1
