[Qemu-devel] [PATCH] hw/usb.c: fix some issues with hub layer preventing bsd guest usb stack from running

[Lonnie Mendez]

  Hello list.  Linked are some fixes to the hub layer that allow a 
FreeBSD guest's usb stack to run.  Basically it allows for a variable 
hub descriptor size (if qemu currently had 7 emulated ports on the hub 
it would be OK).  With this it was able to mount a flash drive and 
transfer some files from the drive to the guest.  The patch applies to 
current cvs.

The 'FreeBSD Workaround' can best be explained by this:

http://fxr.watson.org/fxr/source/dev/usb/uhub.c?v=RELENG6#L83

The data for the status change enpdoint in FreeBSD's uhub layer is a 
fixed byte.  This is of course incorrect and the patch compensates 
slightly for this in order to allow the driver to at least run.


http://gnome.dnsalias.net/patches/qemu-hubfixups.patch