Messages in this thread Patch in this message | | | From | Peter Ujfalusi <> | Subject | [PATCH] mmc: owl-mmc: Use dma_request_chan() instead dma_request_slave_channel() | Date | Tue, 17 Dec 2019 13:29:34 +0200 |
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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> --- drivers/mmc/host/owl-mmc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/owl-mmc.c b/drivers/mmc/host/owl-mmc.c index 771e3d00f1bb..01ffe51f413d 100644 --- a/drivers/mmc/host/owl-mmc.c +++ b/drivers/mmc/host/owl-mmc.c @@ -616,10 +616,10 @@ static int owl_mmc_probe(struct platform_device *pdev) pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask; - owl_host->dma = dma_request_slave_channel(&pdev->dev, "mmc"); - if (!owl_host->dma) { + owl_host->dma = dma_request_chan(&pdev->dev, "mmc"); + if (IS_ERR(owl_host->dma)) { dev_err(owl_host->dev, "Failed to get external DMA channel.\n"); - ret = -ENXIO; + ret = PTR_ERR(owl_host->dma); goto err_free_host; } -- Peter Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
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