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Message-ID: <3db0ead268f6c53647de07286e3d60332d23abe8.1298889267.git.viresh.kumar@st.com> Date: Mon, 28 Feb 2011 16:11:20 +0530 From: Viresh Kumar <viresh.kumar@...com> To: <dan.j.williams@...el.com>, <linus.walleij@...ricsson.com> Cc: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, Viresh Kumar <viresh.kumar@...com>, <shiraz.hashim@...com>, <amit.goel@...com>, <armando.visconti@...com> Subject: [PATCH 5/8 resend] dw_dmac: adding support for 64 bit access width for memcpy xfers Signed-off-by: Viresh Kumar <viresh.kumar@...com> --- drivers/dma/dw_dmac.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index 5cc5abf..c40b89f 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -577,7 +577,9 @@ dwc_prep_dma_memcpy(struct dma_chan *chan, dma_addr_t dest, dma_addr_t src, * We can be a lot more clever here, but this should take care * of the most common optimization. */ - if (!((src | dest | len) & 3)) + if (!((src | dest | len) & 7)) + src_width = dst_width = 3; + else if (!((src | dest | len) & 3)) src_width = dst_width = 2; else if (!((src | dest | len) & 1)) src_width = dst_width = 1; -- 1.7.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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