<dec f='src/src/sys/dev/gpio/gpiovar.h' l='113' type='int gpio_lock(void * )'/>
<def f='src/src/sys/dev/gpio/gpio.c' l='479' ll='497' type='int gpio_lock(void * data)'/>
<use f='src/src/sys/dev/gpio/gpio.c' l='551' u='c' c='gpioioctl'/>
