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-rw-r--r--package/kernel/mac80211/patches/331-ath9k_hw-do-not-run-NF-and-periodic-calibration-at-t.patch53
1 files changed, 53 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/331-ath9k_hw-do-not-run-NF-and-periodic-calibration-at-t.patch b/package/kernel/mac80211/patches/331-ath9k_hw-do-not-run-NF-and-periodic-calibration-at-t.patch
new file mode 100644
index 0000000000..1d841a7637
--- /dev/null
+++ b/package/kernel/mac80211/patches/331-ath9k_hw-do-not-run-NF-and-periodic-calibration-at-t.patch
@@ -0,0 +1,53 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Sat, 18 Oct 2014 13:39:11 +0200
+Subject: [PATCH] ath9k_hw: do not run NF and periodic calibration at the
+ same time
+
+It can cause inconsistent calibration results or in some cases turn the
+radio deaf.
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+@@ -660,7 +660,6 @@ static void ar9002_hw_olc_temp_compensat
+ static int ar9002_hw_calibrate(struct ath_hw *ah, struct ath9k_channel *chan,
+ u8 rxchainmask, bool longcal)
+ {
+- bool iscaldone = true;
+ struct ath9k_cal_list *currCal = ah->cal_list_curr;
+ bool nfcal, nfcal_pending = false;
+ int ret;
+@@ -672,15 +671,13 @@ static int ar9002_hw_calibrate(struct at
+ if (currCal && !nfcal &&
+ (currCal->calState == CAL_RUNNING ||
+ currCal->calState == CAL_WAITING)) {
+- iscaldone = ar9002_hw_per_calibration(ah, chan,
+- rxchainmask, currCal);
+- if (iscaldone) {
+- ah->cal_list_curr = currCal = currCal->calNext;
+-
+- if (currCal->calState == CAL_WAITING) {
+- iscaldone = false;
+- ath9k_hw_reset_calibration(ah, currCal);
+- }
++ if (!ar9002_hw_per_calibration(ah, chan, rxchainmask, currCal))
++ return 0;
++
++ ah->cal_list_curr = currCal = currCal->calNext;
++ if (currCal->calState == CAL_WAITING) {
++ ath9k_hw_reset_calibration(ah, currCal);
++ return 0;
+ }
+ }
+
+@@ -710,7 +707,7 @@ static int ar9002_hw_calibrate(struct at
+ }
+ }
+
+- return iscaldone;
++ return 1;
+ }
+
+ /* Carrier leakage Calibration fix */