tree e6a52e9d53ab3e42e90979aea3473f0ec3935015
parent ec33efe28f9f87e51cc79ce060ae0101eedd5a19
author Peter Chen <peter.chen@nxp.com> 1483496363 +0800
committer Felipe Balbi <felipe.balbi@linux.intel.com> 1485248661 +0200

usb: gadget: uac2: add req_number as parameter

There are only two requests for uac2, it may not be enough at high
loading system which usb interrupt handler can't be serviced on
time, then the data will be lost since it is isoc transfer for audio.

In this patch, we introduce a parameter for the number for usb request,
and the user can override it if current number for request is not enough
for his/her use case.

Besides, update this parameter for legacy audio gadget and documentation.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>