Thread (28 messages) 28 messages, 7 authors, 2011-03-07
STALE5567d

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

From: Viresh Kumar <hidden>
Date: 2011-02-28 10:42:34
Also in: lkml
Subsystem: dma generic offload engine subsystem, the rest · Maintainers: Vinod Koul, Linus Torvalds

Signed-off-by: Viresh Kumar <redacted>
---
 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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