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SubjectRe: [PATCH v1 5/5] pinctrl: armada-37xx: Replace custom code by gpiochip_count() call
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Hello!

On 3/25/22 11:03 PM, Andy Shevchenko wrote:

> Since we have generic function to count GPIO controller nodes
> under given device, there is no need to open code it. Replace
> custom code by gpiochip_count() call.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 24 +++++++++------------
> 1 file changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
> index 08cad14042e2..ba94125f6566 100644
> --- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
> +++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
> @@ -728,22 +728,18 @@ static int armada_37xx_irqchip_register(struct platform_device *pdev,
> struct gpio_irq_chip *girq = &gc->irq;
> struct device *dev = &pdev->dev;
> struct device_node *np;
> - int ret = -ENODEV, i, nr_irq_parent;
> + unsigned int nr_child_nodes, i;
> + int ret;
>
> /* Check if we have at least one gpio-controller child node */
> - for_each_child_of_node(dev->of_node, np) {
> - if (of_property_read_bool(np, "gpio-controller")) {
> - ret = 0;
> - break;
> - }
> - }
> - if (ret)
> - return dev_err_probe(dev, ret, "no gpio-controller child node\n");
> + nr_child_nodes = gpiochip_count(dev);
> + if (!nr_child_nodes)
> + return dev_err_probe(dev, -ENODEV, "no gpio-controller child node\n");
>
> - nr_irq_parent = of_irq_count(np);
> spin_lock_init(&info->irq_lock);
>
> - if (!nr_irq_parent) {
> + nr_child_nodes = of_irq_count(np);

Mhm, 'np' is no longer assigned to at this point...

> + if (!nr_child_nodes) {
> dev_err(dev, "invalid or no IRQ\n");
> return 0;
> }
[...]

MBR, Sergey

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