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============drivers\input\mouse\amimouse.c============
    input_report_rel(amimouse_dev, REL_X, dx);
    input_report_rel(amimouse_dev, REL_Y, dy);
    input_report_key(amimouse_dev, BTN_LEFT, ciaa.pra & 0x40);
    input_report_key(amimouse_dev, BTN_MIDDLE, potgor & 0x0100);
    input_report_key(amimouse_dev, BTN_RIGHT, potgor & 0x0400);
    input_sync(amimouse_dev);// ¿½±´µ½openÁ˵Äÿ¸öclientµÄclient->packets[16]»·Ðλº³åÇø,ÿ¸öÓ¦ÓóÌÐòÔÚµ÷ÓÃopen ʱ,mousedev_open¶¼»áµ÷ÓÃkzallocÀ´ÉêÇëÒ»¸ö¶ÀÁ¢µÄmousedev_client½á¹¹Ìå,È»ºó½«¸Ãclient¹Ò½Óµ½ mousedev->client_listÁ´±í,×îºóÓÉmousedev_notify_readersÏò mousedev->client_listÁ´±íÉϹҽӵÄÿ¸öclient¿½±´Êó±êÐÅÏ¢,×îºówake_up»½ÐÑread»òpoll.
============drivers\input\mousedev.c============
mousedev_read=>mousedev_packet=>Èç¹ûdx,dy,dzͬʱ¶¼Îª0,˵Ã÷Êó±êÍ£Ö¹ÁË,ÄÇôclient->ready = 0;
mousedev_event(dev, EV_SYN, SYN_REPORT, 0)=>mousedev_notify_readers=>Èç¹ûdx,dy,dzÓÐÒ»¸ö·¢ÉúÁËÒÆ¶¯»òÕßÊó±ê°´¼üÉÏÒ»´ÎµÄ°´¼ü²»Í¬,ÄÇôclient->ready = 1;¿½±´Êý¾Ýµ½mousedev->client_listÁ´±íÉϹҽӵÄÿ¸öclientµÄ»·Ðλº³åÇø,×îºóµ÷ÓÃwake_up_interruptible(&mousedev->wait);»½ÐÑÒòΪread»òÕßpoll²Ù×÷¶ø±»pendingסµÄÓ¦Ó


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