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/** * gpiod_to_chip - Return the GPIO chip to which a GPIO descriptor belongs * @desc: descriptor to return the chip of */struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc){ if (!desc || !desc->gdev || !desc->gdev->chip) return NULL; return desc->gdev->chip;}EXPORT_SYMBOL_GPL(gpiod_to_chip);
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