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-rw-r--r--package/mac80211/patches/575-ath9k_fix_paprd_crash.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/package/mac80211/patches/575-ath9k_fix_paprd_crash.patch b/package/mac80211/patches/575-ath9k_fix_paprd_crash.patch
new file mode 100644
index 0000000000..1e74a6bd24
--- /dev/null
+++ b/package/mac80211/patches/575-ath9k_fix_paprd_crash.patch
@@ -0,0 +1,58 @@
+--- a/drivers/net/wireless/ath/ath9k/hw.h
++++ b/drivers/net/wireless/ath/ath9k/hw.h
+@@ -404,6 +404,7 @@ struct ath9k_hw_cal_data {
+ int8_t iCoff;
+ int8_t qCoff;
+ bool rtt_done;
++ bool paprd_packet_sent;
+ bool paprd_done;
+ bool nfcal_pending;
+ bool nfcal_interference;
+--- a/drivers/net/wireless/ath/ath9k/hw.c
++++ b/drivers/net/wireless/ath/ath9k/hw.c
+@@ -1780,6 +1780,8 @@ int ath9k_hw_reset(struct ath_hw *ah, st
+ /* Operating channel changed, reset channel calibration data */
+ memset(caldata, 0, sizeof(*caldata));
+ ath9k_init_nfcal_hist_buffer(ah, chan);
++ } else if (caldata) {
++ caldata->paprd_packet_sent = false;
+ }
+ ah->noise = ath9k_hw_getchan_noise(ah, chan);
+
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -2028,6 +2028,9 @@ static void ath_tx_complete(struct ath_s
+
+ ath_dbg(common, XMIT, "TX complete: skb: %p\n", skb);
+
++ if (sc->sc_ah->caldata)
++ sc->sc_ah->caldata->paprd_packet_sent = true;
++
+ if (!(tx_flags & ATH_TX_ERROR))
+ /* Frame was ACKed */
+ tx_info->flags |= IEEE80211_TX_STAT_ACK;
+--- a/drivers/net/wireless/ath/ath9k/link.c
++++ b/drivers/net/wireless/ath/ath9k/link.c
+@@ -256,7 +256,7 @@ void ath_paprd_calibrate(struct work_str
+ int len = 1800;
+ int ret;
+
+- if (!caldata)
++ if (!caldata || !caldata->paprd_packet_sent || caldata->paprd_done)
+ return;
+
+ ath9k_ps_wakeup(sc);
+@@ -283,13 +283,6 @@ void ath_paprd_calibrate(struct work_str
+ continue;
+
+ chain_ok = 0;
+-
+- ath_dbg(common, CALIBRATE,
+- "Sending PAPRD frame for thermal measurement on chain %d\n",
+- chain);
+- if (!ath_paprd_send_frame(sc, skb, chain))
+- goto fail_paprd;
+-
+ ar9003_paprd_setup_gain_table(ah, chain);
+
+ ath_dbg(common, CALIBRATE,