Commit c1fce225 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Ulf Hansson
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mmc: dw_mmc: 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: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191217112656.30860-1-peter.ujfalusi@ti.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 9f606f11

drivers/mmc/host/dw_mmc.c

+5 −3
Original line number Original line Diff line number Diff line
@@ -833,12 +833,14 @@ static int dw_mci_edmac_init(struct dw_mci *host) 
	if (!host->dms)

	if (!host->dms)

		return -ENOMEM;

		return -ENOMEM;





	host->dms->ch = dma_request_slave_channel(host->dev, "rx-tx");

	host->dms->ch = dma_request_chan(host->dev, "rx-tx");

	if (!host->dms->ch) {

	if (IS_ERR(host->dms->ch)) {

		int ret = PTR_ERR(host->dms->ch);



		dev_err(host->dev, "Failed to get external DMA channel.\n");

		dev_err(host->dev, "Failed to get external DMA channel.\n");

		kfree(host->dms);

		kfree(host->dms);

		host->dms = NULL;

		host->dms = NULL;

		return -ENXIO;

		return ret;

	}

	}





	return 0;

	return 0;

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