[patch] [radeon] remove meaningless checks of unsigned < 0

[Jung-uk Kim]

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On 2014-07-16 14:32:14 -0400, Sean Bruno wrote:
> https://phabric.freebsd.org/D423
> 
> This has been in my queue for a while.  Anyone have any objections
> to this?
As I noted in the CR, I prefer the upstream changes, i.e.,

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1cd73ff7

Note our code has "#ifdef DUMBBELL_WIP" around the first patch.
Probably dumbbell hacked it to work around the first problem. ;-)

Jung-uk Kim
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