[PATCH 03/10] pinctrl: nuvoton: ma35: Assign fwnode to gpio_chip in ma35_gpiolib_register()

[Lee Jones <lee@kernel.org>]

ma35_gpiolib_register() registers all 14 GPIO banks under the same
parent platform device without setting bank->chip.fwnode to the child
bank node.  Consequently, all GPIO banks share the parent pinctrl node
for OF/fwnode lookups, preventing consumer drivers from resolving
phandles to individual GPIO bank child nodes (&gpiob, &gpioc, etc.).

Set bank->chip.fwnode to bank->fwnode before registering each GPIO
chip.

Fixes: f805e356313b ("pinctrl: nuvoton: Add ma35d1 pinctrl and GPIO driver")
Closes: https://sashiko.dev/#/bug/linux-cbafd8f2-6541-4311-b97b-f7285d2e1992
Cc: stable@vger.kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
---
 drivers/pinctrl/nuvoton/pinctrl-ma35.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/nuvoton/pinctrl-ma35.c b/drivers/pinctrl/nuvoton/pinctrl-ma35.c
index 04528e734bc9..25c66b9e8dd2 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-ma35.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-ma35.c
@@ -518,6 +518,7 @@ static int ma35_gpiolib_register(struct platform_device *pdev, struct ma35_pinct
 		bank->irqinten = 0;
 		bank->chip.label = bank->name;
 		bank->chip.parent = &pdev->dev;
+		bank->chip.fwnode = bank->fwnode;
 		bank->chip.request = ma35_gpio_core_to_request;
 		bank->chip.direction_input = ma35_gpio_core_direction_in;
 		bank->chip.direction_output = ma35_gpio_core_direction_out;
-- 
2.56.0.567.gdb80ae8cd5-goog