[PATCH v2 1/3] dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff'
From: Robin Gong <hidden>
Date: 2018-07-13 05:10:19
Also in:
dmaengine, lkml
Subsystem:
dma generic offload engine subsystem, the rest · Maintainers:
Vinod Koul, Linus Torvalds
Add macro SDMA_BD_MAX_CNT to replace '0xffff'. Signed-off-by: Robin Gong <redacted> --- drivers/dma/imx-sdma.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 3b622d6..e3d5e73 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c@@ -185,6 +185,7 @@ * Mode/Count of data node descriptors - IPCv2 */ struct sdma_mode_count { +#define SDMA_BD_MAX_CNT 0xffff u32 count : 16; /* size of the buffer pointed by this BD */ u32 status : 8; /* E,R,I,C,W,D status bits stored here */ u32 command : 8; /* command mostly used for channel 0 */
@@ -1344,9 +1345,9 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg( count = sg_dma_len(sg); - if (count > 0xffff) { + if (count > SDMA_BD_MAX_CNT) { dev_err(sdma->dev, "SDMA channel %d: maximum bytes for sg entry exceeded: %d > %d\n", - channel, count, 0xffff); + channel, count, SDMA_BD_MAX_CNT); goto err_bd_out; }
@@ -1421,9 +1422,9 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic( sdmac->flags |= IMX_DMA_SG_LOOP; - if (period_len > 0xffff) { + if (period_len > SDMA_BD_MAX_CNT) { dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n", - channel, period_len, 0xffff); + channel, period_len, SDMA_BD_MAX_CNT); goto err_bd_out; }
@@ -1970,7 +1971,7 @@ static int sdma_probe(struct platform_device *pdev) sdma->dma_device.residue_granularity = DMA_RESIDUE_GRANULARITY_SEGMENT; sdma->dma_device.device_issue_pending = sdma_issue_pending; sdma->dma_device.dev->dma_parms = &sdma->dma_parms; - dma_set_max_seg_size(sdma->dma_device.dev, 65535); + dma_set_max_seg_size(sdma->dma_device.dev, SDMA_BD_MAX_CNT); platform_set_drvdata(pdev, sdma);
--
2.7.4