usr_buf           200 drivers/gpio/gpio-mockup.c 					char __user *usr_buf,
usr_buf           221 drivers/gpio/gpio-mockup.c 	return simple_read_from_buffer(usr_buf, size, ppos, buf, cnt);
usr_buf           225 drivers/gpio/gpio-mockup.c 					 const char __user *usr_buf,
usr_buf           239 drivers/gpio/gpio-mockup.c 	rv = kstrtoint_from_user(usr_buf, size, 0, &val);