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37022f745b
struct gpio_chip now has callbacks for setting line values that return an integer, allowing to indicate failures. Convert the drivers to using them. Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>