misc驱动不能自己确定主设备号么?
下面是触摸屏驱动的注册代码:
static struct miscdevice ucb1x00_ts_dev = {
minor: 14,
name: "touchscreen/ucb1x00",
fops: &ucb1x00_fops,
};
static inline int ucb1x00_ts_register(struct ucb1x00_ts *ts)
{
init_waitqueue_head(&ts->read_wait);
return misc_register(&ucb1x00_ts_dev);
}
好像不能指定主设备号,为什么?