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d46329a708
If GPIO probing is deferred, the driver tries to claim an invalid GPIO line which leads to an error message like this: gpio-keys-polled buttons.2: unable to claim gpio 4294966779, err=-22 gpio-keys-polled: probe of buttons.2 failed with error -22 We should make sure that error code returned by of_get_gpio_flags (including -EPROBE_DEFER) is propagated up the stack. Cc: stable@vger.kernel.org Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>