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net: em_canid: remove useless statements from em_canid_change 

tcf_ematch is allocated by kzalloc in function tcf_em_tree_validate(),
so cm_old is always NULL.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Duan Jiong 2014-06-18 16:48:39 +08:00 committed by David S. Miller
parent a3f5ee71cd
commit 2b74e2caec
1 changed files with 0 additions and 7 deletions
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7
net/sched/em_canid.c
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@ -125,7 +125,6 @@ static int em_canid_change(struct tcf_proto *tp, void *data, int len,
{
struct can_filter *conf = data; /* Array with rules */
struct canid_match *cm;
struct canid_match *cm_old = (struct canid_match *)m->data;
int i;
if (!len)
@ -181,12 +180,6 @@ static int em_canid_change(struct tcf_proto *tp, void *data, int len,
m->datalen = sizeof(struct canid_match) + len;
m->data = (unsigned long)cm;
if (cm_old != NULL) {
pr_err("canid: Configuring an existing ematch!\n");
kfree(cm_old);
}
return 0;
}