在进行linux内核移植实验,进行linux内核编译,出现如下错误drivers/input/keyboard/gpio_keys.c: In function ‘gpio_keys_suspend’:
drivers/input/keyboard/gpio_keys.c:805:2: error: implicit declaration of function ‘pinctrl_pm_select_sleep_state’ [-Werror=implicit-function-declaration]
pinctrl_pm_select_sleep_state(dev);
请问这是什么错误,如何解决?