Comment 3 for bug 1532412

patch set submitted to <email address hidden>:
         [PATCH 0/5] [media] cancel_delayed_work_sync before device removal / kfree

Seems that the cause for the kernel panic is a missing call to
cancel_delayed_work_sync in si2157_remove before the call to kfree.
After adding cancel_delayed_work_sync(&dev->stat_work), rmmod does not
trigger the kernel panic any more.

However, very similar issues could be identified also in other modules:

   ts2020
   af9013
   af9033
   rtl2830

when looking in drivers/media/tuners and drivers/media/dvb-frontends.

Therefore, a patch set has been submitted to <email address hidden>
which contains fixes for those modules, too. The submitted patch set is:

   [PATCH 0/5] [media] cancel_delayed_work_sync before device removal / kfree

I hope these patches completely fix the issue and are ok for inclusion
in the kernel.

BR and thx!
  Martin