| 标题 | 阅读 | 评论 | 转发 | 发布日期 | |
|---|---|---|---|---|---|
| WIN98下ADO的测试 | 1381 | 1 | 0 | 2005-09-04 | |
| 并口 | 1253 | 0 | 0 | 2005-07-17 | |
| 如何用 Linux 来煮咖啡(转帖) | 1943 | 0 | 0 | 2005-07-13 | |
| BCB 的技术点滴 | 1114 | 0 | 0 | 2005-06-28 | |
| 无语的人,但还说话 | 886 | 0 | 0 | 2005-06-27 | |
| personal FAQs | 1132 | 0 | 0 | 2005-06-17 | |
| linux下引导盘的制作【转】 | 2468 | 0 | 0 | 2005-05-27 | |
| SO的创建及使用 | 1876 | 0 | 0 | 2005-05-27 | |
| 如何编译xvidcore-0.9.1(转帖） | 2970 | 0 | 0 | 2005-05-18 | |
| 突然的发现 | 1391 | 0 | 0 | 2005-05-13 | |
| 搭建自己的服务器平台 | 1386 | 0 | 0 | 2005-05-13 | |
| LFS5.0 system finish | 1347 | 0 | 0 | 2005-04-23 | |
| LFS5.0开始了 | 1109 | 0 | 0 | 2005-04-21 | |
| 裁减小结 | 1236 | 0 | 0 | 2005-04-14 | |
| yihui兄弟学习嵌入式Linux的笔记和体会(转贴） | 1284 | 0 | 0 | 2005-04-13 | |
| BabyLinux制作过程详解(转贴） | 1322 | 0 | 0 | 2005-03-23 | |
| JPEG 简易文档 V2.11（转贴） | 1268 | 0 | 0 | 2005-03-06 | |
| JRTPLIB和MPEG2 | 2294 | 8 | 0 | 2005-03-04 | |
| MPEG-4 Information (including AVC/H.264)(转贴） | 2543 | 0 | 0 | 2005-03-04 | |
| 从SHELL回到VIDEO | 1056 | 0 | 0 | 2005-03-03 |
chinaunix网友2006-06-14 20:44
我的开发板上的USB只能部分识别,高手能帮忙解决吗? 正确的打印信息如下: (前面有"!!!"的是我另外加上的打印信息,主要是在core/hub.c中的函数中) # !!! state 5 ports 4 chg 0000 evt 0010 !!! connect_change =0 !!! connect_change =0 !!! connect_change =0 !!! connect_change =0 !!! (1) hub_port_reset(hub, port1, udev, delay)=-134 !!! in hub_event, list_empty(&hub_event_list)!=0 !!! state 5 ports 2 chg 0000 evt 0004 !!! connect_change =0 !!! connect_change =0 !!! (1) hub_port_reset(hub, port1, udev, delay)=0 usb 3-2: new full speed USB device using ohci_hcd and address 2 !!! (2)hub_port_reset(hub, port1, udev, delay)=0 usb_get_device_descriptor(udev, USB_DT_DEVICE_SIZE)=18 udev->descriptor.bMaxPacketSize0=8 udev->descriptor.bLength=12 udev->descriptor.bDescriptorType=1 udev->descriptor.bcdUSB=110 udev->descriptor.bDeviceClass=0 udev->descriptor.bDeviceSubClass=0 udev->descriptor.idVendor=dd8 udev->descriptor.idProduct=1003 udev->descriptor.bcdDevice=200 udev->descriptor.iManufacturer=1 udev->descriptor.iProduct=2 udev->descriptor.iSerialNumber=0 udev->descriptor.bNumConfigurations=1 !!! new device strings: Mfr=1, Product=2, SerialNumber=0 !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_probe_interface scsi2 : SCSI emulation for USB Mass Storage devices !!! hub_port_connect_change return !!! state 5 ports 2 chg 0000 evt 0004 !!! connect_change =0 !!! connect_change =0 !!! in hub_event, list_empty(&hub_event_list)!=0 !!! in hub_thread() ,after hub_event,begin wait_event_interruptible ! Vendor: Model: Rev: Type: Direct-Access ANSI SCSI revision: 02 SCSI device sda: 62048 512-byte hdwr sectors (32 MB) sda: assuming drive cache: write through SCSI device sda: 62048 512-byte hdwr sectors (32 MB) sda: assuming drive cache: write through sda: sda1 Attached scsi disk sda at scsi2, channel 0, id 0, lun 0 Attached scsi generic sg0 at scsi2, channel 0, id 0, lun 0, type 0 不能识别的USB 的打印信息如下: # !!! state 5 ports 4 chg 0000 evt 0010 !!! connect_change =0 !!! connect_change =0 !!! connect_change =0 !!! connect_change =0 !!! (1) hub_port_reset(hub, port1, udev, delay)=-134 !!! in hub_event, list_empty(&hub_event_list)!=0 !!! state 5 ports 2 chg 0000 evt 0004 !!! connect_change =0 !!! connect_change =0 !!! (1) hub_port_reset(hub, port1, udev, delay)=0 usb 3-2: new full speed USB device using ohci_hcd and address 3 !!! (2)hub_port_reset(hub, port1, udev, delay)=0 usb_get_device_descriptor(udev, USB_DT_DEVICE_SIZE)=18 udev->descriptor.bMaxPacketSize0=64 udev->descriptor.bLength=12 udev->descriptor.bDescriptorType=1 udev->descriptor.bcdUSB=110 udev->descriptor.bDeviceClass=0 udev->descriptor.bDeviceSubClass=0 udev->descriptor.idVendor=204 udev->descriptor.idProduct=6025 udev->descriptor.bcdDevice=100 udev->descriptor.iManufacturer=0 udev->descriptor.iProduct=0 udev->descriptor.iSerialNumber=0 udev->descriptor.bNumConfigurations=1 !!! new device strings: Mfr=0, Product=0, SerialNumber=0 !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_device_match() !!! begin to usb_probe_interface scsi3 : SCSI emulation for USB Mass Storage devices !!! hub_port_connect_change return !!! state 5 ports 2 chg 0000 evt 0004 !!! connect_change =0 !!! connect_change =0 !!! in hub_event, list_empty(&hub_event_list)!=0 !!! in hub_thread() ,after hub_event,begin wait_event_interruptible ! /******************这里要等待一段时间************************/ !!! (1) hub_port_reset(hub, port1, udev, delay)=0 usb 3-2: reset full speed USB device using ohci_hcd and address 3 usb 3-2: scsi_eh_3 timed out on ep0in !!! (2)hub_port_reset(hub, port1, udev, delay)=0 usb 3-2: device descriptor read/64, error -145 usb 3-2: scsi_eh_3 timed out on ep0in !!! (2)hub_port_reset(hub, port1, udev, delay)=0 usb 3-2: device descriptor read/64, error -145 !!! state 5 ports 2 chg 0000 evt 0004 !!! connect_change =0 !!! connect_change =0 !!! in hub_event, list_empty(&hub_event_list)!=0 .........................以下省略 初看好象前面都是一样的,直到执行函数wait_event_interruptible(khubd_wait, !list_empty(&hub_event_list))的时候,出现问题,但我不知道为什么会出现这样的问题.有高手知道吗?? 下面是/usb/core/hub.c中的线程函数: static int hub_thread(void *__unused) { /* * This thread doesn't need any user-level access, * so get rid of all our resources */ daemonize("khubd"); allow_signal(SIGKILL); /* Send me a signal to get me die (for debugging) */ do { hub_events(); wait_event_interruptible(khubd_wait, !list_empty(&hub_event_list)); try_to_freeze(PF_FREEZE); } while (!signal_pending(current)); pr_debug ("%s: khubd exiting\n", usbcore_name); complete_and_exit(&khubd_exited, 0); } 我都快分析了一周了,没解决! 求高手,帮忙分析一下!
