[source] ath9k: fix up a refcount imbalance error in the IRQ related fix

[LEDE Commits]

nbd pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/36db14369016b976ce7b0d6a1928eb7a26c45f5c

commit 36db14369016b976ce7b0d6a1928eb7a26c45f5c
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Fri Jan 27 15:43:12 2017 +0100

    ath9k: fix up a refcount imbalance error in the IRQ related fix
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 ...race-condition-in-enabling-disabling-IRQs.patch | 40 +++++++++++++++++++---
 .../mac80211/patches/542-ath9k_debugfs_diag.patch  |  2 +-
 .../patches/560-ath9k_ubnt_uap_plus_hsr.patch      |  4 +--
 3 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/package/kernel/mac80211/patches/357-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch b/package/kernel/mac80211/patches/357-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch
index 962a08a..3e1b2a1 100644
--- a/package/kernel/mac80211/patches/357-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch
+++ b/package/kernel/mac80211/patches/357-ath9k-fix-race-condition-in-enabling-disabling-IRQs.patch
@@ -118,7 +118,7 @@ Signed-off-by: Felix Fietkau <nbd at nbd.name>
  
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -375,9 +375,14 @@ void ath9k_tasklet(unsigned long data)
+@@ -375,21 +375,20 @@ void ath9k_tasklet(unsigned long data)
  	struct ath_common *common = ath9k_hw_common(ah);
  	enum ath_reset_type type;
  	unsigned long flags;
@@ -134,7 +134,39 @@ Signed-off-by: Felix Fietkau <nbd at nbd.name>
  	ath9k_ps_wakeup(sc);
  	spin_lock(&sc->sc_pcu_lock);
  
-@@ -480,7 +485,7 @@ void ath9k_tasklet(unsigned long data)
+ 	if (status & ATH9K_INT_FATAL) {
+ 		type = RESET_TYPE_FATAL_INT;
+ 		ath9k_queue_reset(sc, type);
+-
+-		/*
+-		 * Increment the ref. counter here so that
+-		 * interrupts are enabled in the reset routine.
+-		 */
+-		atomic_inc(&ah->intr_ref_cnt);
+ 		ath_dbg(common, RESET, "FATAL: Skipping interrupts\n");
+ 		goto out;
+ 	}
+@@ -405,11 +404,6 @@ void ath9k_tasklet(unsigned long data)
+ 			type = RESET_TYPE_BB_WATCHDOG;
+ 			ath9k_queue_reset(sc, type);
+ 
+-			/*
+-			 * Increment the ref. counter here so that
+-			 * interrupts are enabled in the reset routine.
+-			 */
+-			atomic_inc(&ah->intr_ref_cnt);
+ 			ath_dbg(common, RESET,
+ 				"BB_WATCHDOG: Skipping interrupts\n");
+ 			goto out;
+@@ -422,7 +416,6 @@ void ath9k_tasklet(unsigned long data)
+ 		if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) {
+ 			type = RESET_TYPE_TX_GTT;
+ 			ath9k_queue_reset(sc, type);
+-			atomic_inc(&ah->intr_ref_cnt);
+ 			ath_dbg(common, RESET,
+ 				"GTT: Skipping interrupts\n");
+ 			goto out;
+@@ -480,7 +473,7 @@ void ath9k_tasklet(unsigned long data)
  	ath9k_btcoex_handle_interrupt(sc, status);
  
  	/* re-enable hardware interrupt */
@@ -143,7 +175,7 @@ Signed-off-by: Felix Fietkau <nbd at nbd.name>
  out:
  	spin_unlock(&sc->sc_pcu_lock);
  	ath9k_ps_restore(sc);
-@@ -544,7 +549,9 @@ irqreturn_t ath_isr(int irq, void *dev)
+@@ -544,7 +537,9 @@ irqreturn_t ath_isr(int irq, void *dev)
  		return IRQ_NONE;
  
  	/* Cache the status */
@@ -154,7 +186,7 @@ Signed-off-by: Felix Fietkau <nbd at nbd.name>
  
  	if (status & SCHED_INTR)
  		sched = true;
-@@ -590,7 +597,7 @@ chip_reset:
+@@ -590,7 +585,7 @@ chip_reset:
  
  	if (sched) {
  		/* turn off every interrupt */
diff --git a/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch b/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
index ea73e6a..b301c7b 100644
--- a/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
+++ b/package/kernel/mac80211/patches/542-ath9k_debugfs_diag.patch
@@ -125,7 +125,7 @@
  		REG_SET_BIT(ah, AR_BTCOEX_WL_LNADIV, AR_BTCOEX_WL_LNADIV_FORCE_ON);
 --- a/drivers/net/wireless/ath/ath9k/main.c
 +++ b/drivers/net/wireless/ath/ath9k/main.c
-@@ -541,6 +541,11 @@ irqreturn_t ath_isr(int irq, void *dev)
+@@ -529,6 +529,11 @@ irqreturn_t ath_isr(int irq, void *dev)
  	if (test_bit(ATH_OP_HW_RESET, &common->op_flags))
  		return IRQ_HANDLED;
  
diff --git a/package/kernel/mac80211/patches/560-ath9k_ubnt_uap_plus_hsr.patch b/package/kernel/mac80211/patches/560-ath9k_ubnt_uap_plus_hsr.patch
index 51fe1bd..42038b7 100644
--- a/package/kernel/mac80211/patches/560-ath9k_ubnt_uap_plus_hsr.patch
+++ b/package/kernel/mac80211/patches/560-ath9k_ubnt_uap_plus_hsr.patch
@@ -343,7 +343,7 @@
  
  u8 ath9k_parse_mpdudensity(u8 mpdudensity)
  {
-@@ -662,6 +664,7 @@ void ath_reset_work(struct work_struct *
+@@ -650,6 +652,7 @@ void ath_reset_work(struct work_struct *
  static int ath9k_start(struct ieee80211_hw *hw)
  {
  	struct ath_softc *sc = hw->priv;
@@ -351,7 +351,7 @@
  	struct ath_hw *ah = sc->sc_ah;
  	struct ath_common *common = ath9k_hw_common(ah);
  	struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan;
-@@ -740,6 +743,11 @@ static int ath9k_start(struct ieee80211_
+@@ -728,6 +731,11 @@ static int ath9k_start(struct ieee80211_
  					  AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
  	}