Messages in this thread Patch in this message | | | From | Lad Prabhakar <> | Subject | [PATCH] irqchip/renesas-irqc: Use platform_get_irq_optional() to get the interrupt | Date | Wed, 15 Dec 2021 23:49:46 +0000 |
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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 bypassed the hierarchical setup and messed 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@bp.renesas.com> --- Hi,
Usage of platform_get_irq/_optional was agreed based on the discussion [0].
[0] https://patchwork.kernel.org/project/linux-renesas-soc/ patch/20211209001056.29774-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
Cheers, Prabhakar --- drivers/irqchip/irq-renesas-irqc.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c index 07a6d8b42b63..c460f3c228d0 100644 --- a/drivers/irqchip/irq-renesas-irqc.c +++ b/drivers/irqchip/irq-renesas-irqc.c @@ -126,7 +126,6 @@ static int irqc_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; const char *name = dev_name(dev); struct irqc_priv *p; - struct resource *irq; int ret; int k; @@ -142,13 +141,15 @@ static int irqc_probe(struct platform_device *pdev) /* allow any number of IRQs between 1 and IRQC_IRQ_MAX */ for (k = 0; k < IRQC_IRQ_MAX; k++) { - irq = platform_get_resource(pdev, IORESOURCE_IRQ, k); - if (!irq) + ret = platform_get_irq_optional(pdev, k); + if (ret == -EPROBE_DEFER) + goto err_runtime_pm_disable; + if (ret < 0) break; p->irq[k].p = p; p->irq[k].hw_irq = k; - p->irq[k].requested_irq = irq->start; + p->irq[k].requested_irq = ret; } p->number_of_irqs = k; -- 2.17.1
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