On 18/12/2021 15:41, Lad Prabhakar wrote: > 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> > --- > Hi, > > Dropping usage of platform_get_resource() was agreed based on > the discussion [0]. > > [0] https://patchwork.kernel.org/project/linux-renesas-soc/ > patch/20211209001056.29774-1-prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx/ > > Cheers, > Prabhakar > --- > drivers/thermal/rcar_thermal.c | 15 +++++++++++---- > 1 file changed, 11 insertions(+), 4 deletions(-) > > diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c > index b49f04daaf47..e4c7bc1bf7ef 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) > + int irq; > + > + irq = platform_get_irq_optional(pdev, i); > + if (irq <= 0 && irq != -ENXIO) { > + ret = irq ? irq : -ENXIO; > + goto error_unregister; > + } > + if (irq == -ENXIO) > continue; Why not invert the conditions? if (irq == -ENXIO) continue; if (irq <= 0) { ret = irq ? irq : -ENXIO; goto out_unregister; } > + > 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 "); > -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
