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USB gadget driver for Arria 10 SOC device

Hello,

- I am working with linux kernel 4.1.22. I am working with usb device controller driver. I ahve developed for kernel version 3.4.0 and successfully passed usb cv test.

- With kernel 4.1.22, i am unable to invoke udc_start gadget ops after successfully passed probe function.

Please help me if anyone is working with this kernel version and developing gadget driver.