usb: gadget: udc: net2280: Improve patching of defect 7374
Once the defect 7374 is patched, there is no reason the keep reading the idx scratch register. Cache the content of the scratch idx register on device flag. Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by: NFelipe Balbi <balbi@ti.com>
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