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dmaengine: add DMA_TRANS_NONE to dma_transfer_direction

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Before dma_transfer_direction was introduced to replace
dma_data_direction, some dmaengine device uses DMA_NONE of
dma_data_direction for some talk with its client drivers.
The mxs-dma and its clients mxs-mmc and gpmi-nand are such case.

This patch adds DMA_TRANS_NONE to dma_transfer_direction and
migrate the DMA_NONE use in mxs-dma to it.

It also fixes the compile warning below.

CC      drivers/dma/mxs-dma.o
drivers/dma/mxs-dma.c: In function ‘mxs_dma_prep_slave_sg’:
drivers/dma/mxs-dma.c:420:16: warning: comparison between ‘enum dma_transfer_direction’ and ‘enum dma_data_direction’

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
This commit is contained in:
Shawn Guo 2011-12-13 23:48:03 +08:00 • committed by Vinod Koul
parent 7ad7a345a4
commit 62268ce917
2 changed files with 2 additions and 1 deletions
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2
drivers/dma/mxs-dma.c
View file

@ -391,7 +391,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg(
idx = 0; idx = 0;
} }
if (direction == DMA_NONE) { if (direction == DMA_TRANS_NONE) {
ccw = &mxs_chan->ccw[idx++]; ccw = &mxs_chan->ccw[idx++];
pio = (u32 *) sgl; pio = (u32 *) sgl;

1
include/linux/dmaengine.h
View file

@ -88,6 +88,7 @@ enum dma_transfer_direction {
DMA_MEM_TO_DEV, DMA_MEM_TO_DEV,
DMA_DEV_TO_MEM, DMA_DEV_TO_MEM,
DMA_DEV_TO_DEV, DMA_DEV_TO_DEV,
DMA_TRANS_NONE,
}; };
/** /**