V4L/DVB (13455): go7007: Add struct v4l2_device.
This adds a struct v4l2_device to the go7007 device struct and registers it during v4l2 initialization. The v4l2_device registration overwrites the go->dev device_data, which is a struct usb_interface with intfdata set to the struct go7007. This changes intfdata to point to the struct v4l2_device inside struct go7007, which is what v4l2_device_register will also set it to (and warn about non-null drvdata on register.) Since usb disconnect can happen any time, this intfdata should always be present. Signed-off-by: Pete Eberlein <pete@sensoray.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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