As expectable, the (unhandled?) false returns from the NULL pointer "fixes" may lead to kernel deadlock freezes and crashes in the ISRs.
Reproducing scenario: ctrl-c at capture startup, e.g.

Next try to fix it.

Future efforts should focus on the new kernel staging GPL driver.
--------------------------

Patch attached.

crystalhd git.linuxtv.org kernel driver: FIX kernel freeze or OOPS in ISRs

Signed-off-by: Thomas Schorpp <thomas.schorpp@gmail.com>

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tom