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mac80211: fix sta_info_destroy(NULL)

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sta_info_destroy(NULL) should be valid, but currently isn't because
the argument is dereferenced before the NULL check. There are no
users that currently pass in NULL, i.e. all check before calling the
function, but I want to change that.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2008-03-31 19:23:00 +02:00 committed by John W. Linville
parent 9dd6aed05b
commit 97bff8ecf4
1 changed files with 5 additions and 3 deletions
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8
net/mac80211/sta_info.c
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@ -129,16 +129,18 @@ struct sta_info *sta_info_get_by_idx(struct ieee80211_local *local, int idx,
void sta_info_destroy(struct sta_info *sta)
{
struct ieee80211_local *local = sta->local;
struct ieee80211_local *local;
struct sk_buff *skb;
int i;
DECLARE_MAC_BUF(mbuf);
ASSERT_RTNL();
might_sleep();
if (!sta)
return;
ASSERT_RTNL();
might_sleep();
local = sta->local;
rate_control_remove_sta_debugfs(sta);
ieee80211_sta_debugfs_remove(sta);