From mboxrd@z Thu Jan 1 00:00:00 1970 From: Albert ARIBAUD Date: Sat, 14 Sep 2013 12:09:37 +0200 Subject: [U-Boot] [PATCH v7 01/11] arm: dma_alloc_coherent: malloc() -> memalign() In-Reply-To: <1375077113-27251-2-git-send-email-dantesu@gmail.com> References: <1375077113-27251-1-git-send-email-dantesu@gmail.com> <1375077113-27251-2-git-send-email-dantesu@gmail.com> Message-ID: <20130914120937.76961b04@lilith> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Kuo-Jung, On Mon, 29 Jul 2013 13:51:43 +0800, Kuo-Jung Su wrote: > From: Kuo-Jung Su > > 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 > CC: Albert ARIBAUD > --- > 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.