pinctrl: samsung: Use platform_get_irq_optional() to get the interrupt

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 <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Krzysztof Kozlowski <[email protected]>
fracktal · Dec 25, 2021 · a382d56 · a382d56
1 parent 16dd3bb
commit a382d56
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/drivers/pinctrl/samsung/pinctrl-samsung.c b/drivers/pinctrl/samsung/pinctrl-samsung.c
@@ -1095,7 +1095,6 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
 	struct samsung_pinctrl_drv_data *drvdata;
 	const struct samsung_pin_ctrl *ctrl;
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 	int ret;
 
 	drvdata = devm_kzalloc(dev, sizeof(*drvdata), GFP_KERNEL);
@@ -1109,9 +1108,11 @@ static int samsung_pinctrl_probe(struct platform_device *pdev)
 	}
 	drvdata->dev = dev;
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (res)
-		drvdata->irq = res->start;
+	ret = platform_get_irq_optional(pdev, 0);
+	if (ret < 0 && ret != -ENXIO)
+		return ret;
+	if (ret > 0)
+		drvdata->irq = ret;
 
 	if (ctrl->retention_data) {
 		drvdata->retention_ctrl = ctrl->retention_data->init(drvdata,