On Sun, Nov 13, 2011 at 4:55 PM, Jesper Juhl <jj@chaosbits.net> wrote:
> We test for 'tx_ring' being != zero and BUG() if that's the case. So after
> that check there is no way that 'tx_ring' could be anything _but_ zero, so
> testing it again is just dead code. Once that dead code is removed, the
> 'pkc' local variable becomes entirely redundant, so remove that as well.

It was there so that it would be a no-brainer thing for the next
person who would want to enable tx_ring support. And given that this
check was called just once during the initial setup, it didn't seem
like a big deal to me. And the BUG() would let the next-person know
what different paths need to be plugged.


Chetan Loke