From 5332dfc36483d2373d980526145789a354af2d49 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Tue, 18 Aug 2015 14:55:27 -0700
Subject: [PATCH] blkcg: remove unnecessary NULL checks from
 __cfqg_set_weight_device()

blkg_to_cfqg() and blkcg_to_cfqgd() on a valid blkg with the policy
enabled are guaranteed to return non-NULL and the counterpart in
blk-throttle doesn't have these checks either.  Remove the spurious
NULL checks.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
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