From: Juergen Borleis jbe@pengutronix.de
[ Upstream commit 7199ddede9f0f2f68d41e6928e1c6c4bca9c39c0 ]
Commit dea7a9fbb009 ("dmaengine: imx-dma: remove dma_slave_config direction usage") changes the method from a "configuration when called" to an "configuration when used". Due to this, only the cyclic DMA type gets configured correctly, while the generic DMA type is left non-configured.
Without this additional call, the struct imxdma_channel::word_size member is stuck at DMA_SLAVE_BUSWIDTH_UNDEFINED and imxdma_prep_slave_sg() always returns NULL.
Signed-off-by: Juergen Borleis jbe@pengutronix.de Fixes: dea7a9fbb009 ("dmaengine: imx-dma: remove dma_slave_config direction usage") Link: https://lore.kernel.org/r/20210729071821.9857-1-jbe@pengutronix.de Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/imx-dma.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index 7f116bbcfad2..2ddc31e64db0 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -812,6 +812,8 @@ static struct dma_async_tx_descriptor *imxdma_prep_slave_sg( dma_length += sg_dma_len(sg); }
+ imxdma_config_write(chan, &imxdmac->config, direction); + switch (imxdmac->word_size) { case DMA_SLAVE_BUSWIDTH_4_BYTES: if (sg_dma_len(sgl) & 3 || sgl->dma_address & 3)