spi/s3c64xx: use correct dma_transfer_direction type
authorArnd Bergmann <arnd@arndb.de>
Mon, 30 Apr 2012 16:31:27 +0000 (16:31 +0000)
committerArnd Bergmann <arnd@arndb.de>
Wed, 17 Oct 2012 13:25:23 +0000 (15:25 +0200)
commitc10356b9846b13651a8a24c3a31e029ffe6eafd9
tree81a81068cb30069c64f372194d1c9df5643e8c74
parentfdc858a466b738d35d3492bc7cf77b1dac98bf7c
spi/s3c64xx: use correct dma_transfer_direction type

There is a subtle difference between dma_transfer_direction and
dma_data_direction: the former is used by the dmaengine framework,
while the latter is used by the dma-mapping API. Although the
purpose is comparable, the actual values are different and must
not be mixed. In this case, the driver just wants to use
dma_transfer_direction.

Without this patch, building s3c6400_defconfig results in:

drivers/spi/spi-s3c64xx.c: In function 's3c64xx_spi_dmacb':
drivers/spi/spi-s3c64xx.c:239:21: warning: comparison between
'enum dma_data_direction' and 'enum dma_transfer_direction' [-Wenum-compare]

As pointed out by Kukjin Kim, this also changes the use of constants
from DMA_FROM_DEVICE/DMA_TO_DEVICE to DMA_DEV_TO_MEM/DMA_MEM_TO_DEV.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: spi-devel-general@lists.sourceforge.net
drivers/spi/spi-s3c64xx.c