[PATCH 5.15 040/135] gpio: visconti: Fix fwnode of GPIO IRQ

Greg Kroah-Hartman
2022-05-10T14:21:08Z

From: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>

commit 171865dab096da1ab980a32eeea5d1b88cd7bc50 upstream.

The fwnode of GPIO IRQ must be set to its own fwnode, not the fwnode of the
parent IRQ. Therefore, this sets own fwnode instead of the parent IRQ fwnode to
GPIO IRQ's.

Fixes: 2ad74f40dacc ("gpio: visconti: Add Toshiba Visconti GPIO support")
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpio/gpio-visconti.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

--- a/drivers/gpio/gpio-visconti.c
+++ b/drivers/gpio/gpio-visconti.c
@@ -130,7 +130,6 @@ static int visconti_gpio_probe(struct pl
struct gpio_irq_chip *girq;
struct irq_domain *parent;
struct device_node *irq_parent;
- struct fwnode_handle *fwnode;
int ret;

priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
@@ -150,14 +149,12 @@ static int visconti_gpio_probe(struct pl
}

parent = irq_find_host(irq_parent);
+ of_node_put(irq_parent);
if (!parent) {
dev_err(dev, "No IRQ parent domain\n");
return -ENODEV;
}

- fwnode = of_node_to_fwnode(irq_parent);
- of_node_put(irq_parent);
-
ret = bgpio_init(&priv->gpio_chip, dev, 4,
priv->base + GPIO_IDATA,
priv->base + GPIO_OSET,
@@ -180,7 +177,7 @@ static int visconti_gpio_probe(struct pl

girq = &priv->gpio_chip.irq;
girq->chip = irq_chip;
- girq->fwnode = fwnode;
+ girq->fwnode = of_node_to_fwnode(dev->of_node);
girq->parent_domain = parent;
girq->child_to_parent_hwirq = visconti_gpio_child_to_parent_hwirq;
girq->populate_parent_alloc_arg = visconti_gpio_populate_parent_fwspec;