gpio: acpi: Factor out acpi_gpio_to_gpiod_flags() helper
The helper function acpi_gpio_to_gpiod_flags() will be used later to configure pin properly whenever it's requested. While here, introduce a checking error code returned by gpiod_configure_flags() and bail out if it's not okay. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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