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mac80211: verify ieee80211_key_replace() arguments

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There's no code calling ieee80211_key_replace() with both
arguments NULL and it wouldn't make sense, but in the
interest of maintainability add a warning for it. As a
side effect, this also shuts up a smatch warning.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-10-29 10:00:08 +01:00
parent 00c3a6ed64
commit 5282c3ba4c
1 changed files with 4 additions and 0 deletions
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4
net/mac80211/key.c
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@ -260,6 +260,10 @@ static void ieee80211_key_replace(struct ieee80211_sub_if_data *sdata,
int idx;
bool defunikey, defmultikey, defmgmtkey;
/* caller must provide at least one old/new */
if (WARN_ON(!new && !old))
return;
if (new)
list_add_tail(&new->list, &sdata->key_list);