* [PATCH v3 03/24] dmaengine: imx-sdma: Remove call to memset after dma_alloc_coherent
@ 2019-07-15 3:17 Fuqian Huang
2019-08-08 12:22 ` Vinod Koul
0 siblings, 1 reply; 2+ messages in thread
From: Fuqian Huang @ 2019-07-15 3:17 UTC (permalink / raw)
Cc: Vinod Koul, Shawn Guo, Sascha Hauer, dmaengine, linux-arm-kernel,
linux-kernel, Fuqian Huang
In commit 518a2f1925c3
("dma-mapping: zero memory returned from dma_alloc_*"),
dma_alloc_coherent has already zeroed the memory.
So memset is not needed.
Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
---
Changes in v3:
- Use actual commit rather than the merge commit in the commit message
drivers/dma/imx-sdma.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 4ec84a633bd3..decfb9e9648a 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1886,10 +1886,6 @@ static int sdma_init(struct sdma_engine *sdma)
sdma->context_phys = ccb_phys +
MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control);
- /* Zero-out the CCB structures array just allocated */
- memset(sdma->channel_control, 0,
- MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control));
-
/* disable all channels */
for (i = 0; i < sdma->drvdata->num_events; i++)
writel_relaxed(0, sdma->regs + chnenbl_ofs(sdma, i));
--
2.11.0
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2019-07-15 3:17 [PATCH v3 03/24] dmaengine: imx-sdma: Remove call to memset after dma_alloc_coherent Fuqian Huang
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