cvs commit: src/sys/dev/usb ugen.c

[Eugene Grosbein]

> FreeBSD src repository
> 
>   Modified files:
>     sys/dev/usb          ugen.c 
>   Log:
>   Fix a number of cases where ugen would panic, especially when the
>   device went away while open or if you tried to change the config
>   number while devices were open. Based on the patch from the PR with
>   a number of changes as discussed with the submitter.
>   
>   PR:             usb/97271
>  Submitted by:   Anish Mistry

This commit applies quite cleanly to RELENG_6 and works.
This fixes usb/93949 too.

Thank you! Please do MFC.

Eugene Grosbein.