一.UAC驱动初始化分析

代码路径：sound\usb\card.c

static struct usb_driver usb_audio_driver = {.name =        "snd-usb-audio",.probe =    usb_audio_probe, //匹配成功后进入这个函数，匹配过程前面的有说明.disconnect =    usb_audio_disconnect,.suspend =    usb_audio_suspend,.resume =    usb_audio_resume,.reset_resume =    usb_audio_reset_resume,.id_table =    usb_audio_ids,.supports_autosuspend = 1, 
};module_usb_driver(usb_audio_driver); //这里封装了，用usb_register注册一个接口驱动

匹配过后，进入usb_audio_probe函数里面

static int usb_audio_probe(struct usb_interface *intf,const struct usb_device_id *usb_id)
{alts = &intf->al