[PATCH v2 04/11] gpiolib: Clear the gpio_device's fwnode initialized flag before adding

Saravana Kannan saravanak at google.com
Thu Jan 26 16:11:31 PST 2023


Registering an irqdomain sets the flag for the fwnode. But having the
flag set when a device is added is interpreted by fw_devlink to mean the
device has already been initialized and will never probe. This prevents
fw_devlink from creating device links with the gpio_device as a
supplier. So, clear the flag before adding the device.

Signed-off-by: Saravana Kannan <saravanak at google.com>
Acked-by: Bartosz Golaszewski <brgl at bgdev.pl>
---
 drivers/gpio/gpiolib.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 939c776b9488..b23140c6485f 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -578,6 +578,12 @@ static int gpiochip_setup_dev(struct gpio_device *gdev)
 {
 	int ret;
 
+	/*
+	 * If fwnode doesn't belong to another device, it's safe to clear its
+	 * initialized flag.
+	 */
+	if (!gdev->dev.fwnode->dev)
+		fwnode_dev_initialized(gdev->dev.fwnode, false);
 	ret = gcdev_register(gdev, gpio_devt);
 	if (ret)
 		return ret;
-- 
2.39.1.456.gfc5497dd1b-goog




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