Re: [PATCH v1 4/9] gpiolib: Clear the gpio_device's fwnode initialized flag before adding

[Bartosz Golaszewski]

On Wed, Aug 10, 2022 at 8:00 AM Saravana Kannan <saravanak@xxxxxxxxxx> wrote:
>
> 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@xxxxxxxxxx>
> ---
>  drivers/gpio/gpiolib.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
> index cc9c0a12259e..1d57d6f24632 100644
> --- a/drivers/gpio/gpiolib.c
> +++ b/drivers/gpio/gpiolib.c
> @@ -522,6 +522,12 @@ 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;
> --
> 2.37.1.559.g78731f0fdb-goog
>

Acked-by: Bartosz Golaszewski <brgl@xxxxxxxx>