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The LP55xx driver is already using the of_gpio() functions to pick a global GPIO number for "enable" from the device tree and request the line. Simplify it by just using a GPIO descriptor. Make sure to keep the enable GPIO line optional, change the naming from "lp5523_enable" to "LP55xx enable" to reflect that this is used on all LP55xx LED drivers. Cc: Milo Kim <milo.kim@ti.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Pavel Machek <pavel@ucw.cz>