[PATCH] ARM: include: dma: Zero out DMA coherent memory in no-MMU case

[PATCH] ARM: include: dma: Zero out DMA coherent memory in no-MMU case

[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


_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox

Re: [PATCH] ARM: include: dma: Zero out DMA coherent memory in no-MMU case

[Sascha Hauer]

On Mon, May 20, 2019 at 11:33:25AM -0700, Andrey Smirnov wrote:
> 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(+)

Applied, thanks

Sascha


-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox