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authorJuergen Borleis <jbe@pengutronix.de>2021-07-29 10:18:21 +0300
committerVinod Koul <vkoul@kernel.org>2021-08-02 10:01:19 +0300
commit7199ddede9f0f2f68d41e6928e1c6c4bca9c39c0 (patch)
treed306c02417647e9e96e77356178d8b9b544e8544 /drivers/dma/imx-dma.c
parenteda97cb095f2958bbad55684a6ca3e7d7af0176a (diff)
downloadlinux-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.c2
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)