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插入U盘识别不到usb设备节点,也看不到打印,但是内核关于usb驱动都已经加载了



dm8107平台

插入一个usb4g棒有打印,打印如下:

ti81xx_interrupt 960: CAUTION: musb1: Babble Interrupt Occured
ti81xx_interrupt 961: Please issue long reset to make usb functional !!
musb_stage0_irq 845: unhandled DISCONNECT transition (a_idle)
ti81xx_interrupt 1059: Babble: devtcl(99)Restarting musb....
evm_deferred_musb_restart 895: deferred musb restart musbid(1)

为什么插入U盘没有打印,插入4g棒有这么起奇怪的打印,而且每次都有

这串打印是什么意思?