em28xx + drx-k fw download crash Kernel

I found again that em28xx driver is crashing. I suspect it is bug in DRX-K firmware downloading. It crashed two times. When it did not crash, there was very often I2C communication failure towards tda18271 tuner that is behind of drx-k. That makes PCTV 520e device unusable. It seems to work fine when I comment out firmware and the chip internal firmware is used.

I am not sure if it is really DRX-K issue as em28xx has also quite long history of this kind of bugs. It is still suspect number one as I see some drx-k fw routine names printed to crash dump.

Here is two different oops pictures:
http://palosaari.fi/linux/v4l-dvb/em28xx_drxk_crash/

regards
Antti

http://palosaari.fi/