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dmaengine: at_hdmac: fix buffer transfer size specification

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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>
This commit is contained in:
Nicolas Ferre 2010-12-13 13:48:41 +01:00 committed by Dan Williams
parent f3c677b997
commit 59a609d9b5
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/at_hdmac.c
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@ -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) {