From: Joy Zou <[email protected]>
commit 8f1bdf630736fccb27bb01f7c94721e272dd512d from
https://source.codeaurora.org/external/imx/linux-imx
The sdma memcpy test fail due to the channel priority not configured.
The sdma_config_write-> sdma_config_channel-> sdma_set_channel_priority
didn't be called in memcpy, So there are only memcpy test fail.
The test fail log :
root@imx8mnevk:~# echo 2000 > /sys/module/dmatest/parameters/timeout
root@imx8mnevk:~# echo 1 > /sys/module/dmatest/parameters/iterations
root@imx8mnevk:~# echo dma0chan1 > /sys/module/dmatest/parameters/channel
[ 248.264090] dmatest: Added 1
threads using dma0chan1
root@imx8mnevk:~# echo 1 > /sys/module/dmatest/parameters/run
[ 253.961791] dmatest: Started 1 threads using dma0chan1
root@imx8mnevk:~# [ 255.967043] dmatest: dma0chan1-copy0: result #1: 'test
timed out' with src_off=0xc4 dst_off=0x3c len=0x3ec0 (0)
[ 255.977236] dmatest: dma0chan1-copy0: summary 1 tests, 1 failures 0.49 iops
7 KB/s (0)
This patch adds sdma_set_channel_priority for memcpy in transfer_init.
Fixes: 111097595c1c ("MLK-25465-1 dmaengine: imx-sdma: move runtime behind to
transfer phase")
Signed-off-by: Joy Zou <[email protected]>
Reviewed by: Dong Aisheng <[email protected]>
Signed-off-by: Xiaolei Wang <[email protected]>
---
drivers/dma/imx-sdma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 7fd32907cc4f..02a0aa072364 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1832,8 +1832,10 @@ static struct sdma_desc *sdma_transfer_init(struct
sdma_channel *sdmac,
goto err_desc_out;
/* No slave_config called in MEMCPY case, so do here */
- if (direction == DMA_MEM_TO_MEM)
+ if (direction == DMA_MEM_TO_MEM) {
sdma_config_ownership(sdmac, false, true, false);
+ sdma_set_channel_priority(sdmac, sdmac->prio);
+ }
if (sdma_load_context(sdmac))
goto err_desc_out;
--
2.25.1
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