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| author | Juergen Borleis <jbe@pengutronix.de> | 2021-07-29 10:18:21 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2021-08-02 10:01:19 +0300 |
| commit | 7199ddede9f0f2f68d41e6928e1c6c4bca9c39c0 (patch) | |
| tree | d306c02417647e9e96e77356178d8b9b544e8544 /drivers/dma/imx-dma.c | |
| parent | eda97cb095f2958bbad55684a6ca3e7d7af0176a (diff) | |
| download | linux-7199ddede9f0f2f68d41e6928e1c6c4bca9c39c0.tar.xz | |
dmaengine: imx-dma: configure the generic DMA type to make it work
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>
Diffstat (limited to 'drivers/dma/imx-dma.c')
| -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) |