Commit 687d39d4 authored Jan 07, 2020 by Peter Ujfalusi Committed by Jonathan Cameron Jan 12, 2020

iio: adc: at91-sama5d2_adc: 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.

The dma_request_chan() is the standard API to request slave channel,
clients should be moved away from the legacy API to allow us to retire
them.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

parent 735404b8

drivers/iio/adc/at91-sama5d2_adc.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -1444,10 +1444,10 @@ static void at91_adc_dma_init(struct platform_device *pdev)
		if (st->dma_st.dma_chan)
		return;

		st->dma_st.dma_chan = dma_request_slave_channel(&pdev->dev, "rx");

		if (!st->dma_st.dma_chan) {
		st->dma_st.dma_chan = dma_request_chan(&pdev->dev, "rx");
		if (IS_ERR(st->dma_st.dma_chan)) {
		dev_info(&pdev->dev, "can't get DMA channel\n");
		st->dma_st.dma_chan = NULL;
		goto dma_exit;
		}

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