> Here the driver is internally making a call to "submit_urb() " ,
> which is a
> member of the " usb_operations " structure . But I don't know how and
> where the " op " object of type " usb_operations " structure, is
> initialized to call " submit_urb() " function .
>
> You please go through this , and please try to clear my doubt .
You do that by filling the dev component of the URB.
You are provided with functions like usb_fill_bulk() to make that
easy. (or MACROs in some kernel versions)
Regards
Oliver
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