[PATCH 3/3] dmaengine: mediatek-cqdma: Use platform_get_irq() to get the interrupt
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: 2021-12-22 16:16:00
Also in:
dmaengine, linux-mediatek, linux-renesas-soc, lkml
Subsystem:
dma generic offload engine subsystem, mediatek dma driver, the rest · Maintainers:
Vinod Koul, Sean Wang, Linus Torvalds
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- drivers/dma/mediatek/mtk-cqdma.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/dma/mediatek/mtk-cqdma.c b/drivers/dma/mediatek/mtk-cqdma.c
index 41ef9f15d3d5..f8847c48ba03 100644
--- a/drivers/dma/mediatek/mtk-cqdma.c
+++ b/drivers/dma/mediatek/mtk-cqdma.c@@ -751,7 +751,6 @@ static int mtk_cqdma_probe(struct platform_device *pdev) struct mtk_cqdma_device *cqdma; struct mtk_cqdma_vchan *vc; struct dma_device *dd; - struct resource *res; int err; u32 i;
@@ -824,13 +823,10 @@ static int mtk_cqdma_probe(struct platform_device *pdev) return PTR_ERR(cqdma->pc[i]->base); /* allocate IRQ resource */ - res = platform_get_resource(pdev, IORESOURCE_IRQ, i); - if (!res) { - dev_err(&pdev->dev, "No irq resource for %s\n", - dev_name(&pdev->dev)); - return -EINVAL; - } - cqdma->pc[i]->irq = res->start; + err = platform_get_irq(pdev, i); + if (err < 0) + return err; + cqdma->pc[i]->irq = err; err = devm_request_irq(&pdev->dev, cqdma->pc[i]->irq, mtk_cqdma_irq, 0, dev_name(&pdev->dev),
--
2.17.1
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