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spi: spi-fsl-dspi: 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/20191212135550.4634-8-peter.ujfalusi@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2019-12-12 15:55:48 +02:00 committed by Mark Brown
parent 401abb764a
commit b5756b7774
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GPG key ID: 24D68B725D5487D0
1 changed files with 6 additions and 6 deletions
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12
drivers/spi/spi-fsl-dspi.c
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@ -395,17 +395,17 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr)
if (!dma)
return -ENOMEM;
dma->chan_rx = dma_request_slave_channel(dev, "rx");
if (!dma->chan_rx) {
dma->chan_rx = dma_request_chan(dev, "rx");
if (IS_ERR(dma->chan_rx)) {
dev_err(dev, "rx dma channel not available\n");
ret = -ENODEV;
ret = PTR_ERR(dma->chan_rx);
return ret;
}
dma->chan_tx = dma_request_slave_channel(dev, "tx");
if (!dma->chan_tx) {
dma->chan_tx = dma_request_chan(dev, "tx");
if (IS_ERR(dma->chan_tx)) {
dev_err(dev, "tx dma channel not available\n");
ret = -ENODEV;
ret = PTR_ERR(dma->chan_tx);
goto err_tx_channel;
}