Messages in this thread Patch in this message | | | From | Nicolas Ferre <> | Subject | [PATCH] dmaengine: at_hdmac: fix buffer transfer size specification | Date | Mon, 13 Dec 2010 13:48:41 +0100 |
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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> --- drivers/dma/at_hdmac.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index a0f3e6a..ea0ee81 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) { -- 1.7.3
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