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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>
This commit is contained in:
Peter Ujfalusi 2019-12-17 13:28:47 +02:00 committed by Ulf Hansson
parent c3b2a0212b
commit 972a2dd626
1 changed files with 3 additions and 3 deletions
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6
drivers/mmc/host/mxs-mmc.c
View File

@ -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;
}