Messages in this thread Patch in this message | | | From | Viresh Kumar <> | Subject | [PATCH V2 05/13] dw_dmac: Adding support for 64 bit access width for memcpy xfers | Date | Thu, 3 Mar 2011 15:47:18 +0530 |
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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 2b0d5e9..e5d97bf 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -583,7 +583,9 @@ 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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