Vendor specific control requests are a significant category of
USB communications. With the current framework, it is difficult
for a composite gadget to handle these requests since any
function could be active. This patchset/feature allows all
unhandled control requests to be passed to a singular
Here is the patch set I proposed in
https://www.spinics.net/lists/linux-usb/msg167533.html.
Vendor specific control requests are a significant category of
USB communications. With the current framework, it is difficult
for a composite gadget to handle these requests since any
function could be ac