* [PATCH] ARM: include: dma: Zero out DMA coherent memory in no-MMU case
@ 2019-05-20 18:33 Andrey Smirnov
2019-05-21 9:46 ` Sascha Hauer
0 siblings, 1 reply; 2+ messages in thread
From: Andrey Smirnov @ 2019-05-20 18:33 UTC (permalink / raw)
To: barebox; +Cc: Andrey Smirnov
Add code to match the behavior of dma_alloc_coherent() when CONFIG_MMU
is selected.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---
arch/arm/include/asm/dma.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm/include/asm/dma.h b/arch/arm/include/asm/dma.h
index bb7e62af0..15999a524 100644
--- a/arch/arm/include/asm/dma.h
+++ b/arch/arm/include/asm/dma.h
@@ -20,6 +20,8 @@ static inline void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
if (dma_handle)
*dma_handle = (dma_addr_t)ret;
+ memset(ret, 0, size);
+
return ret;
}
--
2.21.0
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2019-05-21 9:46 ` Sascha Hauer
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