Comment # 9 on bug 1181104 from Takashi Iwai

Now I looked at the code again, and found that the real problem is rather the
dvb-usb core stuff.  dvb_usb_device_init() copies the properties object, but
the dev->desc still points to the old properties.  So, the patch in dw2012
driver is correct, per se, but the dvb-usb core behaved wrong.

Below is the another patch to fix the issue.  Please give it a try.