From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@linaro.org (Shawn Guo) Date: Tue, 13 Dec 2011 23:48:03 +0800 Subject: [PATCH 1/4] dmaengine: add DMA_TRANS_NONE to dma_transfer_direction In-Reply-To: <1323791286-29574-1-git-send-email-shawn.guo@linaro.org> References: <1323791286-29574-1-git-send-email-shawn.guo@linaro.org> Message-ID: <1323791286-29574-2-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 --- drivers/dma/mxs-dma.c | 2 +- include/linux/dmaengine.h | 1 + 2 files changed, 2 insertions(+), 1 deletions(-) diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index bdf4672..ff89211 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -417,7 +417,7 @@ static struct dma_async_tx_descriptor *mxs_dma_prep_slave_sg( idx = 0; } - if (direction == DMA_NONE) { + if (direction == DMA_TRANS_NONE) { ccw = &mxs_chan->ccw[idx++]; pio = (u32 *) sgl; diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 5532bb8..679b349 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -88,6 +88,7 @@ enum dma_transfer_direction { DMA_MEM_TO_DEV, DMA_DEV_TO_MEM, DMA_DEV_TO_DEV, + DMA_TRANS_NONE, }; /** -- 1.7.4.1