+++ /dev/null
-From: Felix Fietkau <nbd@nbd.name>
-Date: Wed, 14 Dec 2016 20:12:25 +0100
-Subject: [PATCH] mac80211: check for MCS in ieee80211_duration before fetching
- chanctx
-
-Makes the code a bit more efficient
-
-Signed-off-by: Felix Fietkau <nbd@nbd.name>
----
-
---- a/net/mac80211/tx.c
-+++ b/net/mac80211/tx.c
-@@ -63,6 +63,10 @@ static __le16 ieee80211_duration(struct
- struct ieee80211_chanctx_conf *chanctx_conf;
- u32 rate_flags = 0;
-
-+ /* assume HW handles this */
-+ if (tx->rate.flags & (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))
-+ return 0;
-+
- rcu_read_lock();
- chanctx_conf = rcu_dereference(tx->sdata->vif.chanctx_conf);
- if (chanctx_conf) {
-@@ -71,10 +75,6 @@ static __le16 ieee80211_duration(struct
- }
- rcu_read_unlock();
-
-- /* assume HW handles this */
-- if (tx->rate.flags & (IEEE80211_TX_RC_MCS | IEEE80211_TX_RC_VHT_MCS))
-- return 0;
--
- /* uh huh? */
- if (WARN_ON_ONCE(tx->rate.idx < 0))
- return 0;