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-rw-r--r--package/kernel/mac80211/patches/ath/555-ath9k-dynack-check-da-enabled-first-in-sampling-rout.patch33
1 files changed, 33 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath/555-ath9k-dynack-check-da-enabled-first-in-sampling-rout.patch b/package/kernel/mac80211/patches/ath/555-ath9k-dynack-check-da-enabled-first-in-sampling-rout.patch
new file mode 100644
index 0000000000..cc5cdf9233
--- /dev/null
+++ b/package/kernel/mac80211/patches/ath/555-ath9k-dynack-check-da-enabled-first-in-sampling-rout.patch
@@ -0,0 +1,33 @@
+From: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
+Date: Fri, 2 Nov 2018 21:49:57 +0100
+Subject: [PATCH] ath9k: dynack: check da->enabled first in sampling
+ routines
+
+Check da->enabled flag first in ath_dynack_sample_tx_ts and
+ath_dynack_sample_ack_ts routines in order to avoid useless
+processing
+
+Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
+Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/dynack.c
++++ b/drivers/net/wireless/ath/ath9k/dynack.c
+@@ -178,7 +178,7 @@ void ath_dynack_sample_tx_ts(struct ath_
+ u32 dur = ts->duration;
+ u8 ridx;
+
+- if ((info->flags & IEEE80211_TX_CTL_NO_ACK) || !da->enabled)
++ if (!da->enabled || (info->flags & IEEE80211_TX_CTL_NO_ACK))
+ return;
+
+ spin_lock_bh(&da->qlock);
+@@ -251,7 +251,7 @@ void ath_dynack_sample_ack_ts(struct ath
+ struct ath_common *common = ath9k_hw_common(ah);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+
+- if (!ath_dynack_bssidmask(ah, hdr->addr1) || !da->enabled)
++ if (!da->enabled || !ath_dynack_bssidmask(ah, hdr->addr1))
+ return;
+
+ spin_lock_bh(&da->qlock);