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The check for NULL skb in the kfree_skb trace event is a duplicate from the check already done in its only caller, kfree_skb(). Remove this duplicate check. Signed-off-by: Mathieu Desnoyers <[email protected]> LKML-Reference: <20110106175319.GA30610@Krystal> Acked-by: Neil Horman <[email protected]> Acked-by: David S. Miller <[email protected]> CC: Steven Rostedt <[email protected]> CC: Frederic Weisbecker <[email protected]> CC: Ingo Molnar <[email protected]> CC: Thomas Gleixner <[email protected]> CC: Zhaolei <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>