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spi: mxs: Use dma_request_chan() instead dma_request_slave_channel()

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dma_request_slave_channel() is a wrapper on top of dma_request_chan()
eating up the error code.

By using dma_request_chan() directly the driver can support deferred
probing against DMA.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191212135550.4634-6-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2019-12-12 15:55:46 +02:00 committed by Mark Brown
parent 6bfbf4d0aa
commit 7ccffd41b2
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 3 deletions
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6
drivers/spi/spi-mxs.c
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@ -590,10 +590,10 @@ static int mxs_spi_probe(struct platform_device *pdev)
if (ret)
goto out_master_free;
ssp->dmach = dma_request_slave_channel(&pdev->dev, "rx-tx");
if (!ssp->dmach) {
ssp->dmach = dma_request_chan(&pdev->dev, "rx-tx");
if (IS_ERR(ssp->dmach)) {
dev_err(ssp->dev, "Failed to request DMA\n");
ret = -ENODEV;
ret = PTR_ERR(ssp->dmach);
goto out_master_free;
}