Commit 9e7a40a2 authored Dec 03, 2025 by Bartosz Golaszewski

gpio: shared: ignore disabled nodes when traversing the device-tree

Don't consider disabled devices when traversing the device-tree looking
for shared GPIOs. Even if they do share a phandle to a pin, they can
never be instantiated and request it.

Fixes: a060b8c5 ("gpiolib: implement low-level, shared GPIO support")
Link: https://lore.kernel.org/r/20251203092309.34737-1-bartosz.golaszewski@oss.qualcomm.com

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

parent 2d967310

drivers/gpio/gpiolib-shared.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -77,6 +77,10 @@ gpio_shared_find_entry(struct fwnode_handle *controller_node,
		/* Handle all special nodes that we should ignore. */
		static bool gpio_shared_of_node_ignore(struct device_node *node)
		{
		/* Ignore disabled devices. */
		if (!of_device_is_available(node))
		return true;

		/*
		* __symbols__ is a special, internal node and should not be considered
		* when scanning for shared GPIOs.