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i2c: mxs: 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>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Peter Ujfalusi 2019-12-17 09:45:05 +02:00 committed by Wolfram Sang
parent 3e566bee7f
commit f7b87c9af4
1 changed files with 3 additions and 3 deletions
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6
drivers/i2c/busses/i2c-mxs.c
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@ -836,10 +836,10 @@ static int mxs_i2c_probe(struct platform_device *pdev)
}
/* Setup the DMA */
i2c->dmach = dma_request_slave_channel(dev, "rx-tx");
if (!i2c->dmach) {
i2c->dmach = dma_request_chan(dev, "rx-tx");
if (IS_ERR(i2c->dmach)) {
dev_err(dev, "Failed to request dma\n");
return -ENODEV;
return PTR_ERR(i2c->dmach);
}
platform_set_drvdata(pdev, i2c);