From 59a609d9b59be9452f168fe228befea53d5962ff Mon Sep 17 00:00:00 2001
From: Nicolas Ferre <nicolas.ferre@atmel.com>
Date: Mon, 13 Dec 2010 13:48:41 +0100
Subject: [PATCH] dmaengine: at_hdmac: fix buffer transfer size specification
Buffer transfer size is the number of transfers to be performed in
relation with the width of the _source_ interface.
So in the DMA_FROM_DEVICE case, it should be the register width that
should be taken into account.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
drivers/dma/at_hdmac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index a0f3e6a06e065..ea0ee81cff53e 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -722,7 +722,7 @@ atc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
desc->lli.daddr = mem;
desc->lli.ctrla = ctrla
| ATC_DST_WIDTH(mem_width)
- | len >> mem_width;
+ | len >> reg_width;
desc->lli.ctrlb = ctrlb;
if (!first) {
--
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