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mac80211: add missing null return check from call to ieee80211_get_sband
The return from ieee80211_get_sband can potentially be a null pointer, so
it seems prudent to add a null check to avoid a null pointer dereference
on sband.
Addresses-Coverity: ("Dereference null return")
Fixes: 2ab4587675
("mac80211: add support for the ADDBA extension element")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190730143205.14261-1-colin.king@canonical.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
parent
2ab4587675
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@ -189,6 +189,8 @@ static void ieee80211_add_addbaext(struct ieee80211_sub_if_data *sdata,
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u8 *pos;
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sband = ieee80211_get_sband(sdata);
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if (!sband)
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return;
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he_cap = ieee80211_get_he_iftype_cap(sband, sdata->vif.type);
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if (!he_cap)
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return;
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