[PATCH] media: stm32-dcmi: Use dma_request_chan() instead dma_request_slave_channel()
From: Peter Ujfalusi <hidden>
Date: 2019-12-17 10:41:38
Also in:
linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
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 <redacted> --- 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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