ath9k: don't run periodic and nf calibration at the same time

Might fix some stability issues on older chips

Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/package/kernel/mac80211/patches/347-ath9k-don-t-run-periodic-and-nf-calibation-at-the-sa.patch b/package/kernel/mac80211/patches/347-ath9k-don-t-run-periodic-and-nf-calibation-at-the-sa.patch
new file mode 100644 (file)
index 0000000..529e109
--- /dev/null
+++ b/package/kernel/mac80211/patches/347-ath9k-don-t-run-periodic-and-nf-calibation-at-the-sa.patch
@@ -0,0 +1,26 @@
+From: Felix Fietkau <nbd@nbd.name>
+Date: Tue, 27 Dec 2016 23:16:23 +0100
+Subject: [PATCH] ath9k: don't run periodic and nf calibation at the same time
+
+The checks already prevents periodic cal from being started while noise
+floor calibration runs. It is missing checks for the other way around.
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+---
+
+--- a/drivers/net/wireless/ath/ath9k/ar9002_calib.c
++++ b/drivers/net/wireless/ath/ath9k/ar9002_calib.c
+@@ -676,10 +676,10 @@ static int ar9002_hw_calibrate(struct at
+                       return 0;
+ 
+               ah->cal_list_curr = currCal = currCal->calNext;
+-              if (currCal->calState == CAL_WAITING) {
++              if (currCal->calState == CAL_WAITING)
+                       ath9k_hw_reset_calibration(ah, currCal);
+-                      return 0;
+-              }
++
++              return 0;
+       }
+ 
+       /* Do NF cal only at longer intervals */