[U-Boot] [PATCH v7 01/11] arm: dma_alloc_coherent: malloc() -> memalign()

Albert ARIBAUD
2013-09-14T10:09:37Z

Hi Kuo-Jung,

On Mon, 29 Jul 2013 13:51:43 +0800, Kuo-Jung Su <dantesu@gmail.com>
wrote:

> From: Kuo-Jung Su <dantesu@faraday-tech.com>
>
> Even though the MMU/D-cache is off, some DMA engines still
> expect strict address alignment.
>
> For example, the incoming Faraday FTMAC110 & FTGMAC100 ethernet
> controllers expect the tx/rx descriptors should always be aligned
> to 16-bytes boundary.
>
> Signed-off-by: Kuo-Jung Su <dantesu@faraday-tech.com>
> CC: Albert ARIBAUD <albert.u.boot@aribaud.net>
> ---
> Changes for v6, v7:
> - Nothing updates
>
> Changes for v5:
> - Initial commit, which is separated from
> "arm: add MMU/D-Cache support for Faraday cores"
>
> arch/arm/include/asm/dma-mapping.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
> index 009863b..55a4e26 100644
> --- a/arch/arm/include/asm/dma-mapping.h
> +++ b/arch/arm/include/asm/dma-mapping.h
> @@ -16,7 +16,7 @@ enum dma_data_direction {
>
> static void *dma_alloc_coherent(size_t len, unsigned long *handle)
> {
> - *handle = (unsigned long)malloc(len);
> + *handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
> return (void *)*handle;
> }
>
> --
> 1.7.9.5
>

Applied to u-boot-arm/master, thanks!

Amicalement,
--
Albert.