ath9k: merge a fix for a race condition on init

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40591 3c298f89-4303-0410-b956-a3cf2f4a3e73

5 files changed, 72 insertions, 4 deletions

diff --git a/package/kernel/mac80211/patches/300-pending_work.patch b/package/kernel/mac80211/patches/300-pending_work.patch
index d6d042d460..1405cc3d72 100644
--- a/package/kernel/mac80211/patches/300-pending_work.patch
+++ b/package/kernel/mac80211/patches/300-pending_work.patch
@@ -1,3 +1,18 @@
+commit 8c7ae357cc5b6bd037ad2d666e9f3789cf882925
+Author: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
+Date:   Wed Apr 23 15:07:57 2014 +0530
+
+    ath9k: fix race in setting ATH_OP_INVALID
+    
+    The commit "ath9k: move sc_flags to ath_common" moved setting
+    ATH_OP_INVALID flag below ieee80211_register_hw. This is causing
+    the flag never being cleared randomly as the drv_start is called
+    prior to setting flag. Fix this by setting the flag prior to
+    register_hw.
+    
+    Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
+    Signed-off-by: John W. Linville <linville@tuxdriver.com>
+
 commit c82552c5b0cb1735dbcbad78b1ffc6d3c212dc56
 Author: Tim Harvey <tharvey@gateworks.com>
 Date:   Mon Apr 21 16:14:57 2014 -0700
@@ -308,3 +323,56 @@ Date:   Sun Apr 6 23:35:28 2014 +0200
  	} while (1);
  
  	if (!(ah->imask & ATH9K_INT_RXEOL)) {
+--- a/drivers/net/wireless/ath/ath9k/ahb.c
++++ b/drivers/net/wireless/ath/ath9k/ahb.c
+@@ -86,7 +86,6 @@ static int ath_ahb_probe(struct platform
+ 	int irq;
+ 	int ret = 0;
+ 	struct ath_hw *ah;
+-	struct ath_common *common;
+ 	char hw_name[64];
+ 
+ 	if (!dev_get_platdata(&pdev->dev)) {
+@@ -146,9 +145,6 @@ static int ath_ahb_probe(struct platform
+ 	wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
+ 		   hw_name, (unsigned long)mem, irq);
+ 
+-	common = ath9k_hw_common(sc->sc_ah);
+-	/* Will be cleared in ath9k_start() */
+-	set_bit(ATH_OP_INVALID, &common->op_flags);
+ 	return 0;
+ 
+  err_irq:
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -781,6 +781,9 @@ int ath9k_init_device(u16 devid, struct 
+ 	common = ath9k_hw_common(ah);
+ 	ath9k_set_hw_capab(sc, hw);
+ 
++	/* Will be cleared in ath9k_start() */
++	set_bit(ATH_OP_INVALID, &common->op_flags);
++
+ 	/* Initialize regulatory */
+ 	error = ath_regd_init(&common->regulatory, sc->hw->wiphy,
+ 			      ath9k_reg_notifier);
+--- a/drivers/net/wireless/ath/ath9k/pci.c
++++ b/drivers/net/wireless/ath/ath9k/pci.c
+@@ -784,7 +784,6 @@ static int ath_pci_probe(struct pci_dev 
+ {
+ 	struct ath_softc *sc;
+ 	struct ieee80211_hw *hw;
+-	struct ath_common *common;
+ 	u8 csz;
+ 	u32 val;
+ 	int ret = 0;
+@@ -877,10 +876,6 @@ static int ath_pci_probe(struct pci_dev 
+ 	wiphy_info(hw->wiphy, "%s mem=0x%lx, irq=%d\n",
+ 		   hw_name, (unsigned long)sc->mem, pdev->irq);
+ 
+-	/* Will be cleared in ath9k_start() */
+-	common = ath9k_hw_common(sc->sc_ah);
+-	set_bit(ATH_OP_INVALID, &common->op_flags);
+-
+ 	return 0;
+ 
+ err_init:
diff --git a/package/kernel/mac80211/patches/502-ath9k_ahb_init.patch b/package/kernel/mac80211/patches/502-ath9k_ahb_init.patch
index 43c3260b80..c1bdc6f925 100644
--- a/package/kernel/mac80211/patches/502-ath9k_ahb_init.patch
+++ b/package/kernel/mac80211/patches/502-ath9k_ahb_init.patch
@@ -1,6 +1,6 @@
 --- a/drivers/net/wireless/ath/ath9k/init.c
 +++ b/drivers/net/wireless/ath/ath9k/init.c
-@@ -892,23 +892,23 @@ static int __init ath9k_init(void)
+@@ -895,23 +895,23 @@ static int __init ath9k_init(void)
  {
  	int error;
  
diff --git a/package/kernel/mac80211/patches/530-ath9k_extra_leds.patch b/package/kernel/mac80211/patches/530-ath9k_extra_leds.patch
index fb24f03b02..1174a47092 100644
--- a/package/kernel/mac80211/patches/530-ath9k_extra_leds.patch
+++ b/package/kernel/mac80211/patches/530-ath9k_extra_leds.patch
@@ -162,7 +162,7 @@
  void ath_fill_led_pin(struct ath_softc *sc)
 --- a/drivers/net/wireless/ath/ath9k/init.c
 +++ b/drivers/net/wireless/ath/ath9k/init.c
-@@ -806,7 +806,7 @@ int ath9k_init_device(u16 devid, struct 
+@@ -809,7 +809,7 @@ int ath9k_init_device(u16 devid, struct 
  
  #ifdef CPTCFG_MAC80211_LEDS
  	/* must be initialized before ieee80211_register_hw */
diff --git a/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch b/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
index 54f5ced4c2..513c48d799 100644
--- a/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
+++ b/package/kernel/mac80211/patches/550-ath9k_entropy_from_adc.patch
@@ -84,7 +84,7 @@
  int ath9k_init_device(u16 devid, struct ath_softc *sc,
  		    const struct ath_bus_ops *bus_ops)
  {
-@@ -813,6 +826,8 @@ int ath9k_init_device(u16 devid, struct 
+@@ -816,6 +829,8 @@ int ath9k_init_device(u16 devid, struct 
  		ARRAY_SIZE(ath9k_tpt_blink));
  #endif
  
diff --git a/package/kernel/mac80211/patches/552-ath9k_p2p_ps_support.patch b/package/kernel/mac80211/patches/552-ath9k_p2p_ps_support.patch
index 1bd0a54112..e066a3808c 100644
--- a/package/kernel/mac80211/patches/552-ath9k_p2p_ps_support.patch
+++ b/package/kernel/mac80211/patches/552-ath9k_p2p_ps_support.patch
@@ -225,7 +225,7 @@ Signed-off-by: Felix Fietkau <nbd@openwrt.org>
  	ath9k_cmn_init_crypto(sc->sc_ah);
  	ath9k_init_misc(sc);
  	ath_fill_led_pin(sc);
-@@ -870,6 +873,9 @@ static void ath9k_deinit_softc(struct at
+@@ -873,6 +876,9 @@ static void ath9k_deinit_softc(struct at
  {
  	int i = 0;