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authorRobin Gong <yibin.gong@nxp.com>2018-07-24 01:46:10 +0800
committerVinod Koul <vkoul@kernel.org>2018-07-30 10:33:58 +0530
commit4a6b2e8a9a0216697405560f3a14b5f33812f444 (patch)
tree61630a36121c5ee8bd16fb3de7065f4a3f923d64 /drivers/dma
parent24ca312dd66329b126230b6f5826f45a61ebb5a8 (diff)
dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff'
Add macro SDMA_BD_MAX_CNT to replace '0xffff'. Signed-off-by: Robin Gong <yibin.gong@nxp.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/imx-sdma.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 3b622d660c8b..e3d5e73a97c7 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);