diff options
| author | Viresh Kumar <viresh.kumar@st.com> | 2011-03-03 11:17:18 +0100 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2011-03-06 20:42:27 +0100 |
| commit | a02274564dd78f7edde3c9ff197ed44f2f8a5a81 (patch) | |
| tree | ffbce0c15b05ea36a1fb2470ad5ab573ba175f98 /drivers | |
| parent | dw_dmac: Calling dwc_scan_descriptors from dwc_tx_status() after taking lock (diff) | |
| download | linux-a02274564dd78f7edde3c9ff197ed44f2f8a5a81.tar.xz linux-a02274564dd78f7edde3c9ff197ed44f2f8a5a81.zip | |
dw_dmac: Adding support for 64 bit access width for memcpy xfers
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | 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 2b0d5e99ae71..e5d97bf9264a 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; |