Commit dd861267 authored by Juergen Borleis's avatar Juergen Borleis Committed by Vinod Koul
Browse files

dma: imx-dma: configure the generic DMA type to make it work 



Commit dea7a9fb
  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: default avatarJuergen Borleis <jbe@pengutronix.de>
Link: https://lore.kernel.org/r/20210729071821.9857-1-jbe@pengutronix.de


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent b92e83f7

drivers/dma/imx-dma.c

+2 −0
Original line number Diff line number Diff line
@@ -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)