Commit 972a2dd6 authored Dec 17, 2019 by Peter Ujfalusi Committed by Ulf Hansson Dec 19, 2019

mmc: 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>
Link: https://lore.kernel.org/r/20191217112847.31351-1-peter.ujfalusi@ti.com


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

parent c3b2a021

drivers/mmc/host/mxs-mmc.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -623,11 +623,11 @@ static int mxs_mmc_probe(struct platform_device *pdev)
		goto out_clk_disable;
		}

		ssp->dmach = dma_request_slave_channel(&pdev->dev, "rx-tx");
		if (!ssp->dmach) {
		ssp->dmach = dma_request_chan(&pdev->dev, "rx-tx");
		if (IS_ERR(ssp->dmach)) {
		dev_err(mmc_dev(host->mmc),
		"%s: failed to request dma\n", __func__);
		ret = -ENODEV;
		ret = PTR_ERR(ssp->dmach);
		goto out_clk_disable;
		}

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