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Linux是在哪里检测usb外设的

楼主#
更多 发布于：2011-02-26 16:51
    请问各位高手，linux是在哪里检测usb外设的。我的板子的usb host可以检测到有usb设备插入，但是我用示波器看cpu的相关的引脚，并没有发现usb host有数据送往usb外设。所以我想找以下控制usb host发送数据的代码，看linux驱动是否有将数据发到usb host的发送缓冲区之类的。
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沙发#
发布于：2011-02-26 16:52
这是我插入usb设备是，系统打印出来的日志：
usb 1-2: new full speed USB device using ohci-omap3 and address 4
usb 1-2: device descriptor read/64, error -62
usb 1-2: device descriptor read/64, error -62
usb 1-2: new full speed USB device using ohci-omap3 and address 5
usb 1-2: device descriptor read/64, error -62
usb 1-2: device descriptor read/64, error -62
usb 1-2: new full speed USB device using ohci-omap3 and address 6
usb 1-2: device not accepting address 6, error -71
usb 1-2: new full speed USB device using ohci-omap3 and address 7
usb 1-2: device not accepting address 7, error -62
hub 1-0:1.0: unable to enumerate USB device on port 2
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fishly_0
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板凳#
发布于：2011-02-26 17:08
下面是打开调试开关后，dmsg看到的调试信息：
下面是打开调试开关后，用dmsg看到的调试输出：
# dmesg
tus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>hub 1-0:1.0: debounce: port 2: total 1075ms stable 100ms status 0x301
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00130100 PRSC PESC CSC PPS
<3>hub 1-0:1.0: unable to enumerate USB device on port 2
<7>hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0004
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00030100 PESC CSC PPS
<7>hub 1-0:1.0: port 2, status 0100, change 0003, 12 Mb/s
<7>hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x100
<7>ohci-omap3 ohci-omap3.0: auto-stop root hub
<7>ohci-omap3 ohci-omap3.0: auto-wakeup root hub
<7>hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0004
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>hub 1-0:1.0: port 2, status 0301, change 0001, 1.5 Mb/s
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>hub 1-0:1.0: debounce: port 2: total 1050ms stable 100ms status 0x301
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00130100 PRSC PESC CSC PPS
<3>hub 1-0:1.0: unable to enumerate USB device on port 2
<7>hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0004
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00030301 PESC CSC LSDA PPS CCS
<7>hub 1-0:1.0: port 2, status 0301, change 0003, 1.5 Mb/s
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010101 CSC PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>hub 1-0:1.0: debounce: port 2: total 1500ms stable 0ms status 0x100
<3>hub 1-0:1.0: connect-debounce failed, port 2 disabled
<7>hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0004
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>hub 1-0:1.0: port 2, status 0301, change 0001, 1.5 Mb/s
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00010301 CSC LSDA PPS CCS
<7>hub 1-0:1.0: debounce: port 2: total 825ms stable 100ms status 0x301
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<6>usb 1-2: new full speed USB device using ohci-omap3 and address 4
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<3>usb 1-2: device descriptor read/64, error -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<3>usb 1-2: device descriptor read/64, error -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<6>usb 1-2: new full speed USB device using ohci-omap3 and address 5
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<3>usb 1-2: device descriptor read/64, error -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0in 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<3>usb 1-2: device descriptor read/64, error -62
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<6>usb 1-2: new full speed USB device using ohci-omap3 and address 6
<7>ohci-omap3 ohci-omap3.0: urb cb6f7940 path 2 ep0out 7ec20000 cc 7 --> status -71
<7>ohci-omap3 ohci-omap3.0: urb cb6f7740 path 2 ep0out 7ec20000 cc 7 --> status -71
<3>usb 1-2: device not accepting address 6, error -71
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00120103 PRSC PESC PPS PES CCS
<6>usb 1-2: new full speed USB device using ohci-omap3 and address 7
<7>ohci-omap3 ohci-omap3.0: urb cb6f7740 path 2 ep0out 5ec20000 cc 5 --> status -62
<7>ohci-omap3 ohci-omap3.0: urb cb6f7740 path 2 ep0out 5ec20000 cc 5 --> status -62
<3>usb 1-2: device not accepting address 7, error -62
<3>hub 1-0:1.0: unable to enumerate USB device on port 2
<7>hub 1-0:1.0: state 7 ports 3 chg 0000 evt 0004
<7>ohci-omap3 ohci-omap3.0: GetStatus roothub.portstatus [1] = 0x00020101 PESC PPS CCS
<7>hub 1-0:1.0: port 2 enable change, status 00000101

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地板#
发布于：2011-02-26 22:04
你怎么不调式驱动代码呢???
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fishly_0
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地下室#
发布于：2011-02-28 11:20
主要是示波器上都看不到有数据传输，感觉像是usb控制器对电气方面的转换还有问题或者是驱动对控制器的操作有问题，  所以想找找从usb host读取数据的最底层的代码。。
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5楼#
发布于：2011-03-01 17:29
我跟代码跟到了td_fill，这里应该就是加到发送队列了吧。但是为什么控制器就是没有信号输出呢。。。
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