gpiolib: Assign fwnode to parent's if no primary one provided
In case when the properties are supplied in the secondary fwnode (for example, built-in device properties) the fwnode pointer left unassigned. This makes unable to retrieve them. Assign fwnode to parent's if no primary one provided. Fixes: 7cba1a4d ("gpiolib: generalize devprop_gpiochip_set_names() for device properties") Fixes: 2afa97e9868f ("gpiolib: Read "gpio-line-names" from a firmware node") Reported-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
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