Here's an announcement for people interested in using USB devices with
invalid configuration descriptors.  I've completed a series of patches
that will make the system accept such devices, to the extent that it can.  
You will have to apply all three patches in sequence; each is a
prerequisite for the next.  They should go on top of a 2.6.4 system.  The
patches are:

as221:  http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937025411336&w=2
as222:  http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937021027794&w=2
as223:  http://marc.theaimsgroup.com/?l=linux-usb-devel&m=107937029404286&w=2

The first two patches just improve the error logging; you might like to 
see what happens when you plug in your devices.  The third is the one that 
changes the kernel's behavior.  Please let me know if the patches don't 
work as expected.

Not all the USB drivers will work properly with that third patch 
installed, so be warned.  The USB audio class driver should be okay.  I 
have no idea what will happen with the ALSA USB audio/MIDI driver; it 
hasn't been updated yet.

Alan Stern



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