From: Maxim Petrov
Date: Sat, 2 May 2020 12:29:08 +0300
> The paranoidal pointer check in IRQ handler looks very strange - it
> really protects us only against bogus drivers which request IRQ line
> with null pointer dev_id. However, the code fragment is incorrect
> because the dev pointer is use
The paranoidal pointer check in IRQ handler looks very strange - it
really protects us only against bogus drivers which request IRQ line
with null pointer dev_id. However, the code fragment is incorrect
because the dev pointer is used before the actual check. That leads
to undefined behavior thus c
