diff options
| author | Juergen Borleis <jbe@pengutronix.de> | 2021-07-29 10:18:21 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-08-02 10:00:39 +0300 |
| commit | dd861267bfecc49df5232c33d3566a334ff5e9f6 (patch) | |
| tree | 1b8837c5156fd06e2fe5bab2947b86e777502727 /drivers/dma | |
| parent | b92e83f7c4f0e5dea11fd9aef1039d3121897391 (diff) | |
| download | linux-dd861267bfecc49df5232c33d3566a334ff5e9f6.tar.xz | |
dma: imx-dma: configure the generic DMA type to make it work
Commit dea7a9f
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>
Link: https://lore.kernel.org/r/20210729071821.9857-1-jbe@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/imx-dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
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) |