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    Subject[PATCH 5/8 resend] dw_dmac: adding support for 64 bit access width for memcpy xfers
    Date
    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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