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Subject[PATCH] media: stm32-dcmi: Use dma_request_chan() instead dma_request_slave_channel()
Date
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/media/platform/stm32/stm32-dcmi.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c
index 9392e3409fba..55351872b0c7 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c
@@ -1910,10 +1910,10 @@ static int dcmi_probe(struct platform_device *pdev)
return PTR_ERR(mclk);
}

- chan = dma_request_slave_channel(&pdev->dev, "tx");
- if (!chan) {
+ chan = dma_request_chan(&pdev->dev, "tx");
+ if (IS_ERR(chan)) {
dev_info(&pdev->dev, "Unable to request DMA channel, defer probing\n");
- return -EPROBE_DEFER;
+ return PTR_ERR(chan);
}

spin_lock_init(&dcmi->irqlock);
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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