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_optional(). Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> --- v2-v3: * Fixed review comment pointed by Andy v1->v2 * Simplified checking error code * Break loop earlier if no interrupts are seen v1: https://lkml.org/lkml/2021/12/18/163 --- drivers/thermal/rcar_thermal.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index b49f04daaf47..e480f7290ccf 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -445,7 +445,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) struct rcar_thermal_common *common; struct rcar_thermal_priv *priv; struct device *dev = &pdev->dev; - struct resource *res, *irq; + struct resource *res; const struct rcar_thermal_chip *chip = of_device_get_match_data(dev); int mres = 0; int i; @@ -467,9 +467,16 @@ static int rcar_thermal_probe(struct platform_device *pdev) pm_runtime_get_sync(dev); for (i = 0; i < chip->nirqs; i++) { - irq = platform_get_resource(pdev, IORESOURCE_IRQ, i); - if (!irq) - continue; + int irq; + + irq = platform_get_irq_optional(pdev, i); + if (irq < 0 && irq != -ENXIO) { + ret = irq; + goto error_unregister; + } + if (!irq || irq == -ENXIO) + break; + if (!common->base) { /* * platform has IRQ support. @@ -487,7 +494,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) idle = 0; /* polling delay is not needed */ } - ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, + ret = devm_request_irq(dev, irq, rcar_thermal_irq, IRQF_SHARED, dev_name(dev), common); if (ret) { dev_err(dev, "irq request failed\n "); -- 2.17.1
