Commit 36e8d3b1 authored by Robin Gong's avatar Robin Gong Committed by Vinod Koul
Browse files

dmaengine: imx-sdma: remove the maximum limitation for bd numbers 



No this limitation now after virtual dma used since bd is allocated
dynamically instead of static.

Signed-off-by: default avatarRobin Gong <yibin.gong@nxp.com>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Tested-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent d69d1e17

drivers/dma/imx-sdma.c

+0 −14
Original line number Diff line number Diff line
@@ -285,7 +285,6 @@ struct sdma_context_data { 
	u32  scratch7;

} __attribute__ ((packed));



#define NUM_BD (int)(PAGE_SIZE / sizeof(struct sdma_buffer_descriptor))



struct sdma_engine;
@@ -1290,13 +1289,6 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg( 
	if (ret)

		goto err_bd_out;



	if (sg_len > NUM_BD) {

		dev_err(sdma->dev, "SDMA channel %d: maximum number of sg exceeded: %d > %d\n",

				channel, sg_len, NUM_BD);

		ret = -EINVAL;

		goto err_bd_out;

	}



	desc->chn_count = 0;

	for_each_sg(sgl, sg, sg_len, i) {

		struct sdma_buffer_descriptor *bd = &desc->bd[i];
@@ -1406,12 +1398,6 @@ static struct dma_async_tx_descriptor *sdma_prep_dma_cyclic( 
	if (ret)

		goto err_bd_out;



	if (num_periods > NUM_BD) {

		dev_err(sdma->dev, "SDMA channel %d: maximum number of sg exceeded: %d > %d\n",

				channel, num_periods, NUM_BD);

		goto err_bd_out;

	}



	if (period_len > 0xffff) {

		dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n",

				channel, period_len, 0xffff);

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