Messages in this thread Patch in this message |  | | | From | Viresh Kumar <> | | Subject | [PATCH 5/7] dw_dmac: adding support for 64 bit access width for memcpy xfers | | Date | Thu, 17 Feb 2011 12:54:55 +0530 |
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From: Viresh KUMAR <viresh.kumar@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.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
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