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[ Upstream commit9c7d24693d] The current code doesn't check if GPIOLIB_IRQCHIP is enabled, which results in a compilation error when trying to build gpio-regmap if CONFIG_GPIOLIB_IRQCHIP isn't enabled. Fixes:6a45b0e258("gpiolib: Introduce gpiochip_irqchip_add_domain()") Suggested-by: Michael Walle <michael@walle.cc> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Michael Walle <michael@walle.cc> Acked-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Link: https://lore.kernel.org/r/20210324081923.20379-2-noltari@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>