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

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/20191212135550.4634-7-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2019-12-12 15:55:47 +02:00 committed by Mark Brown
parent 7ccffd41b2
commit 401abb764a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 6 deletions
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12
drivers/spi/spi-sirf.c
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@ -1126,16 +1126,16 @@ static int spi_sirfsoc_probe(struct platform_device *pdev)
sspi->bitbang.master->dev.of_node = pdev->dev.of_node;
/* request DMA channels */
sspi->rx_chan = dma_request_slave_channel(&pdev->dev, "rx");
if (!sspi->rx_chan) {
sspi->rx_chan = dma_request_chan(&pdev->dev, "rx");
if (IS_ERR(sspi->rx_chan)) {
dev_err(&pdev->dev, "can not allocate rx dma channel\n");
ret = -ENODEV;
ret = PTR_ERR(sspi->rx_chan);
goto free_master;
}
sspi->tx_chan = dma_request_slave_channel(&pdev->dev, "tx");
if (!sspi->tx_chan) {
sspi->tx_chan = dma_request_chan(&pdev->dev, "tx");
if (IS_ERR(sspi->tx_chan)) {
dev_err(&pdev->dev, "can not allocate tx dma channel\n");
ret = -ENODEV;
ret = PTR_ERR(sspi->tx_chan);
goto free_rx_dma;
}