From patchwork Mon Jan 23 10:49:25 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [1/1] i.MX SDMA: Fix burstsize settings From: =?utf-8?q?Philippe_R=C3=A9tornaz?= X-Patchwork-Id: 137347 Message-Id: <1327315765-20679-1-git-send-email-philippe.retornaz@epfl.ch> To: s.hauer@pengutronix.de Cc: vinod.koul@intel.com, =?utf-8?q?Philippe=20R=C3=A9tornaz?= , linux-arm-kernel@lists.infradead.org Date: Mon, 23 Jan 2012 11:49:25 +0100 Commit 6584cb88 fixed the mxcmmc driver but forgot to fix the SDMA driver to handle the correct burtsize. This make the SD card access works again with DMA on i.MX31 boards. Signed-off-by: Philippe Rétornaz Tested-by: Sascha Hauer Acked-by: Sascha Hauer --- drivers/dma/imx-sdma.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index f993955..c193dac 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -1095,11 +1095,13 @@ static int sdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, case DMA_SLAVE_CONFIG: if (dmaengine_cfg->direction == DMA_FROM_DEVICE) { sdmac->per_address = dmaengine_cfg->src_addr; - sdmac->watermark_level = dmaengine_cfg->src_maxburst; + sdmac->watermark_level = dmaengine_cfg->src_maxburst * + dmaengine_cfg->src_addr_width; sdmac->word_size = dmaengine_cfg->src_addr_width; } else { sdmac->per_address = dmaengine_cfg->dst_addr; - sdmac->watermark_level = dmaengine_cfg->dst_maxburst; + sdmac->watermark_level = dmaengine_cfg->dst_maxburst * + dmaengine_cfg->dst_addr_width; sdmac->word_size = dmaengine_cfg->dst_addr_width; } return sdma_config_channel(sdmac);