usb/77184: [umass] [panic] kernel panic on USB device disconnect, even if not detected

[Yuri]

Now after rereading the original post I realize that I am testing the 
different condition but for quite similar situation. F828 camera isn't 
available any more and is probably supported by now, so it's really 
difficult to retest the original condition now.

But my previous post indicates there is the problem in USB stack in the 
similar scenario, thiugh without unsupported device. Before I saw panic 
in the case of disconnect of the mounted disk.

Yuri