From: Johannes Berg <johannes.berg@xxxxxxxxx> Verify that the channel context methods are all assigned by the driver or not used. Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> --- net/mac80211/main.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 9be3ef1..d709a5d 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -549,6 +549,13 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, if (WARN_ON(ops->sta_state && (ops->sta_add || ops->sta_remove))) return NULL; + /* check all or no channel context operations exist */ + i = !!ops->add_chanctx + !!ops->remove_chanctx + + !!ops->change_chanctx + !!ops->assign_vif_chanctx + + !!ops->unassign_vif_chanctx; + if (WARN_ON(i != 0 && i != 5)) + return NULL; + /* Ensure 32-byte alignment of our private data and hw private data. * We use the wiphy priv data for both our ieee80211_local and for * the driver's private data -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
