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Commit 4a6b2e8a authored by Robin Gong's avatar Robin Gong Committed by Vinod Koul
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dmaengine: imx-sdma: add SDMA_BD_MAX_CNT to replace '0xffff' 



Add macro SDMA_BD_MAX_CNT to replace '0xffff'.

Signed-off-by: default avatarRobin Gong <yibin.gong@nxp.com>
Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 24ca312d

drivers/dma/imx-sdma.c

+6 −5
Original line number Diff line number Diff line
@@ -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);