From: Stephen Hemminger <shemminger@vyatta.com>
Date: Sun, 10 Feb 2008 07:26:53 +0000 (-0800)
Subject: [PKT_SCHED] ematch: tcf_em_destroy robustness
X-Git-Tag: v2.6.25-rc1~7^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=954415e33ed6cfa932c13e8c2460bd05e50723b5;p=pandora-kernel.git

[PKT_SCHED] ematch: tcf_em_destroy robustness

Make the code in tcf_em_tree_destroy more robust and cleaner:
 * Don't need to cast pointer to kfree() or avoid passing NULL.
 * After freeing the tree, clear the pointer to avoid possible problems
from repeated free.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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