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

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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 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@bp.renesas.com>
Link: https://lore.kernel.org/r/20211224145748.18754-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
This commit is contained in:
Lad Prabhakar 2021-12-24 14:57:47 +00:00 committed by Krzysztof Kozlowski
parent 16dd3bb5c1
commit a382d568f1
1 changed files with 5 additions and 4 deletions
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9
drivers/pinctrl/samsung/pinctrl-samsung.c
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@ -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,