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| author | Robin Gong <yibin.gong@nxp.com> | 2018-06-19 18:57:02 +0200 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2018-07-02 14:54:47 +0200 |
| commit | 36e8d3b133e16eb2aee8a53b9ed5cd34821f6123 (patch) | |
| tree | 9fc76d49926fd454c66327c20197c5119c489e23 /drivers/dma | |
| parent | dmaengine: imx-sdma: remove useless 'lock' and 'enabled' in 'struct sdma_chan... (diff) | |
| download | linux-36e8d3b133e16eb2aee8a53b9ed5cd34821f6123.tar.xz linux-36e8d3b133e16eb2aee8a53b9ed5cd34821f6123.zip | |
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: 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>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/imx-sdma.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index d1d3494eba01..9f1a4621fd9a 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -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); |