Messages in this thread | | | Subject | Re: [PATCH] ata: pxa: Use dma_request_chan() instead dma_request_slave_channel() | From | Bartlomiej Zolnierkiewicz <> | Date | Mon, 13 Jan 2020 12:22:51 +0100 |
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On 12/17/19 8:40 AM, Peter Ujfalusi wrote: > 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>
Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics
> --- > drivers/ata/pata_pxa.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/ata/pata_pxa.c b/drivers/ata/pata_pxa.c > index 41430f79663c..71678bed04b0 100644 > --- a/drivers/ata/pata_pxa.c > +++ b/drivers/ata/pata_pxa.c > @@ -274,10 +274,9 @@ static int pxa_ata_probe(struct platform_device *pdev) > /* > * Request the DMA channel > */ > - data->dma_chan = > - dma_request_slave_channel(&pdev->dev, "data"); > - if (!data->dma_chan) > - return -EBUSY; > + data->dma_chan = dma_request_chan(&pdev->dev, "data"); > + if (IS_ERR(data->dma_chan)) > + return PTR_ERR(data->dma_chan); > ret = dmaengine_slave_config(data->dma_chan, &config); > if (ret < 0) { > dev_err(&pdev->dev, "dma configuration failed: %d\n", ret); >
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