我是一个新手,学习如何为 USB 设备编写 Linux 设备驱动程序。我想了解 dmesg 输出
[ 6870.420077] usb 2-5: new low-speed USB device number 43 using ohci_hcd
[ 6870.500057] hub 2-0:1.0: unable to enumerate USB device on port 5
[ 6871.444057] usb 2-5: new low-speed USB device number 44 using ohci_hcd
[ 6871.524065] hub 2-0:1.0: unable to enumerate USB device on port 5
[ 6872.468089] usb 2-5: new low-speed USB device number 45 using ohci_hcd
[ 6872.548065] hub 2-0:1.0: unable to enumerate USB device on port 5
您能否指导我阅读一些解释如何破译这些内核消息的阅读材料?