platform_get_resource(pdev, IORESOURCE_IRQ) is not recommended for
requesting IRQ's resources, as they can be not ready yet. Using
platform_get_irq() instead is preferred for getting IRQ even if it was
not retrieved earlier.
Signed-off-by: Fabien Dessenne <fabien.dessenne@xxxxxx>
---
drivers/dma/stm32-dma.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c
index ba239b5..3306818 100644
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -1302,13 +1302,14 @@ static int stm32_dma_probe(struct platform_device *pdev)
for (i = 0; i < STM32_DMA_MAX_CHANNELS; i++) {
chan = &dmadev->chan[i];
- res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
- if (!res) {
- ret = -EINVAL;
- dev_err(&pdev->dev, "No irq resource for chan %d\n", i);
+ chan->irq = platform_get_irq(pdev, i);
+ if (chan->irq < 0) {
+ ret = chan->irq;
+ if (ret != -EPROBE_DEFER)
+ dev_err(&pdev->dev,
+ "No irq resource for chan %d\n", i);
goto err_unregister;
}
- chan->irq = res->start;
ret = devm_request_irq(&pdev->dev, chan->irq,
stm32_dma_chan_irq, 0,
dev_name(chan2dev(chan)), chan);
--
2.7.4
