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

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

Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Robin Gong 2018-06-20 00:57:02 +08:00 committed by Vinod Koul
parent d69d1e17c3
commit 36e8d3b133
1 changed files with 0 additions and 14 deletions
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14
drivers/dma/imx-sdma.c
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@ -285,7 +285,6 @@ struct sdma_context_data {
u32 scratch7; u32 scratch7;
} __attribute__ ((packed)); } __attribute__ ((packed));
#define NUM_BD (int)(PAGE_SIZE / sizeof(struct sdma_buffer_descriptor))
struct sdma_engine; struct sdma_engine;
@ -1290,13 +1289,6 @@ static struct dma_async_tx_descriptor *sdma_prep_slave_sg(
if (ret) if (ret)
goto err_bd_out; 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; desc->chn_count = 0;
for_each_sg(sgl, sg, sg_len, i) { for_each_sg(sgl, sg, sg_len, i) {
struct sdma_buffer_descriptor *bd = &desc->bd[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) if (ret)
goto err_bd_out; 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) { if (period_len > 0xffff) {
dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n", dev_err(sdma->dev, "SDMA channel %d: maximum period size exceeded: %zu > %d\n",
channel, period_len, 0xffff); channel, period_len, 0xffff);