From: Felix Fietkau <nbd@openwrt.org>
Date: Mon, 23 Nov 2009 22:01:45 +0000 (+0000)
Subject: separate ath9k debugfs support from ath9k debugging, use the mac80211 debugfs config... 
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=9fce92753fbaf50f800e991a20f697566374f7e8;p=openwrt%2Fstaging%2Frobimarko.git

separate ath9k debugfs support from ath9k debugging, use the mac80211 debugfs config option to enable it

SVN-Revision: 18505
---

diff --git a/package/mac80211/Makefile b/package/mac80211/Makefile
index aef79373d7..2da34badac 100644
--- a/package/mac80211/Makefile
+++ b/package/mac80211/Makefile
@@ -22,6 +22,9 @@ PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/compat-wireless-$(PKG_VERSION)
 
 PKG_CONFIG_DEPENDS:= \
 	CONFIG_PACKAGE_kmod-mac80211 \
+	CONFIG_PACKAGE_MAC80211_DEBUGFS \
+	CONFIG_PACKAGE_ATH_DEBUG \
+	CONFIG_ATH_USER_REGD \
 
 include $(INCLUDE_DIR)/package.mk
 
@@ -498,8 +501,7 @@ BUILDFLAGS:= \
 	$(if $(CONFIG_PCI),-DCONFIG_SSB_SPROM) \
 	$(if $(CONFIG_LEDS_TRIGGERS), -DCONFIG_MAC80211_LEDS -DCONFIG_LEDS_TRIGGERS -DCONFIG_B43_LEDS -DCONFIG_B43LEGACY_LEDS -DCONFIG_AR9170_LEDS) \
 	-DCONFIG_B43_HWRNG -DCONFIG_B43LEGACY_HWRNG \
-	$(if $(CONFIG_PACKAGE_MAC80211_DEBUGFS),-DCONFIG_MAC80211_DEBUGFS) \
-	$(if $(CONFIG_PACKAGE_ATH9K_DEBUG),-DCONFIG_ATH9K_DEBUG) \
+	$(if $(CONFIG_PACKAGE_MAC80211_DEBUGFS),-DCONFIG_MAC80211_DEBUGFS -DCONFIG_ATH9K_DEBUGFS) \
 	$(if $(CONFIG_PACKAGE_ATH_DEBUG),-DCONFIG_ATH_DEBUG) \
 	-D__CONFIG_MAC80211_RC_DEFAULT=minstrel \
 	$(if $(CONFIG_ATH_USER_REGD),-DATH_USER_REGD=1)
@@ -530,7 +532,7 @@ MAKE_OPTS:= \
 	CONFIG_ATH_DEBUG=$(if $(CONFIG_PACKAGE_ATH_DEBUG),y) \
 	CONFIG_ATH5K=$(if $(CONFIG_PACKAGE_kmod-ath5k),m) \
 	CONFIG_ATH9K=$(if $(CONFIG_PACKAGE_kmod-ath9k),m) \
-	CONFIG_ATH9K_DEBUG=$(if $(CONFIG_PACKAGE_ATH9K_DEBUG),y) \
+	CONFIG_ATH9K_DEBUGFS=$(if $(CONFIG_PACKAGE_MAC80211_DEBUGFS),y) \
 	CONFIG_ZD1211RW=$(if $(CONFIG_PACKAGE_kmod-zd1211rw),m) \
 	CONFIG_P54_COMMON=$(if $(CONFIG_PACKAGE_kmod-p54-common),m) \
 	CONFIG_P54_PCI=$(if $(CONFIG_PACKAGE_kmod-p54-pci),m) \
diff --git a/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch b/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch
deleted file mode 100644
index d8ca8dfbfb..0000000000
--- a/package/mac80211/patches/520-ath9k_debugfs_chainmask.patch
+++ /dev/null
@@ -1,130 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/debug.c
-+++ b/drivers/net/wireless/ath/ath9k/debug.c
-@@ -71,6 +71,90 @@ static const struct file_operations fops
- 	.owner = THIS_MODULE
- };
- 
-+static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-+	char buf[32];
-+	unsigned int len;
-+
-+	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
-+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
-+}
-+
-+static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-+	unsigned long mask;
-+	char buf[32];
-+	ssize_t len;
-+
-+	len = min(count, sizeof(buf) - 1);
-+	if (copy_from_user(buf, user_buf, len))
-+		return -EINVAL;
-+
-+	buf[len] = '\0';
-+	if (strict_strtoul(buf, 0, &mask))
-+		return -EINVAL;
-+
-+	common->tx_chainmask = mask;
-+	sc->sc_ah->caps.tx_chainmask = mask;
-+	return count;
-+}
-+
-+static const struct file_operations fops_tx_chainmask = {
-+	.read = read_file_tx_chainmask,
-+	.write = write_file_tx_chainmask,
-+	.open = ath9k_debugfs_open,
-+	.owner = THIS_MODULE
-+};
-+
-+
-+static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-+	char buf[32];
-+	unsigned int len;
-+
-+	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
-+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
-+}
-+
-+static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-+	unsigned long mask;
-+	char buf[32];
-+	ssize_t len;
-+
-+	len = min(count, sizeof(buf) - 1);
-+	if (copy_from_user(buf, user_buf, len))
-+		return -EINVAL;
-+
-+	buf[len] = '\0';
-+	if (strict_strtoul(buf, 0, &mask))
-+		return -EINVAL;
-+
-+	common->rx_chainmask = mask;
-+	sc->sc_ah->caps.rx_chainmask = mask;
-+	return count;
-+}
-+
-+static const struct file_operations fops_rx_chainmask = {
-+	.read = read_file_rx_chainmask,
-+	.write = write_file_rx_chainmask,
-+	.open = ath9k_debugfs_open,
-+	.owner = THIS_MODULE
-+};
-+
-+
- static ssize_t read_file_dma(struct file *file, char __user *user_buf,
- 			     size_t count, loff_t *ppos)
- {
-@@ -568,6 +652,16 @@ int ath9k_init_debug(struct ath_hw *ah)
- 	if (!sc->debug.debugfs_debug)
- 		goto err;
- 
-+	sc->debug.debugfs_rx_chainmask = debugfs_create_file("rx_chainmask",
-+		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
-+	if (!sc->debug.debugfs_rx_chainmask)
-+		goto err;
-+
-+	sc->debug.debugfs_tx_chainmask = debugfs_create_file("tx_chainmask",
-+		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
-+	if (!sc->debug.debugfs_tx_chainmask)
-+		goto err;
-+
- 	sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
- 				       sc->debug.debugfs_phy, sc, &fops_dma);
- 	if (!sc->debug.debugfs_dma)
-@@ -611,6 +705,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
- 	struct ath_common *common = ath9k_hw_common(ah);
- 	struct ath_softc *sc = (struct ath_softc *) common->priv;
- 
-+	debugfs_remove(sc->debug.debugfs_tx_chainmask);
-+	debugfs_remove(sc->debug.debugfs_rx_chainmask);
- 	debugfs_remove(sc->debug.debugfs_xmit);
- 	debugfs_remove(sc->debug.debugfs_wiphy);
- 	debugfs_remove(sc->debug.debugfs_rcstat);
---- a/drivers/net/wireless/ath/ath9k/debug.h
-+++ b/drivers/net/wireless/ath/ath9k/debug.h
-@@ -123,6 +123,8 @@ struct ath_stats {
- };
- 
- struct ath9k_debug {
-+	struct dentry *debugfs_rx_chainmask;
-+	struct dentry *debugfs_tx_chainmask;
- 	struct dentry *debugfs_phy;
- 	struct dentry *debugfs_debug;
- 	struct dentry *debugfs_dma;
diff --git a/package/mac80211/patches/520-ath9k_debugfs_config.patch b/package/mac80211/patches/520-ath9k_debugfs_config.patch
new file mode 100644
index 0000000000..021338307d
--- /dev/null
+++ b/package/mac80211/patches/520-ath9k_debugfs_config.patch
@@ -0,0 +1,81 @@
+--- a/drivers/net/wireless/ath/ath9k/Makefile
++++ b/drivers/net/wireless/ath/ath9k/Makefile
+@@ -7,7 +7,7 @@ ath9k-y +=	beacon.o \
+ 
+ ath9k-$(CONFIG_PCI) += pci.o
+ ath9k-$(CONFIG_ATHEROS_AR71XX) += ahb.o
+-ath9k-$(CONFIG_ATH9K_DEBUG) += debug.o
++ath9k-$(CONFIG_ATH9K_DEBUGFS) += debug.o
+ 
+ obj-$(CONFIG_ATH9K) += ath9k.o
+ 
+--- a/drivers/net/wireless/ath/ath9k/ath9k.h
++++ b/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -483,7 +483,7 @@ struct ath_softc {
+ 
+ 	int beacon_interval;
+ 
+-#ifdef CONFIG_ATH9K_DEBUG
++#ifdef CONFIG_ATH9K_DEBUGFS
+ 	struct ath9k_debug debug;
+ #endif
+ 	struct ath_beacon_config cur_beacon_conf;
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -31,6 +31,8 @@ static int ath9k_debugfs_open(struct ino
+ 	return 0;
+ }
+ 
++#ifdef CONFIG_ATH_DEBUG
++
+ static ssize_t read_file_debug(struct file *file, char __user *user_buf,
+ 			     size_t count, loff_t *ppos)
+ {
+@@ -71,6 +73,8 @@ static const struct file_operations fops
+ 	.owner = THIS_MODULE
+ };
+ 
++#endif
++
+ static ssize_t read_file_dma(struct file *file, char __user *user_buf,
+ 			     size_t count, loff_t *ppos)
+ {
+@@ -563,10 +567,12 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 	if (!sc->debug.debugfs_phy)
+ 		goto err;
+ 
++#ifdef CONFIG_ATH_DEBUG
+ 	sc->debug.debugfs_debug = debugfs_create_file("debug",
+ 		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
+ 	if (!sc->debug.debugfs_debug)
+ 		goto err;
++#endif
+ 
+ 	sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
+ 				       sc->debug.debugfs_phy, sc, &fops_dma);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -23,13 +23,13 @@
+ struct ath_txq;
+ struct ath_buf;
+ 
+-#ifdef CONFIG_ATH9K_DEBUG
++#ifdef CONFIG_ATH9K_DEBUGFS
+ #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++
+ #else
+ #define TX_STAT_INC(q, c) do { } while (0)
+ #endif
+ 
+-#ifdef CONFIG_ATH9K_DEBUG
++#ifdef CONFIG_ATH9K_DEBUGFS
+ 
+ /**
+  * struct ath_interrupt_stats - Contains statistics about interrupts
+@@ -186,6 +186,6 @@ static inline void ath_debug_stat_retrie
+ {
+ }
+ 
+-#endif /* CONFIG_ATH9K_DEBUG */
++#endif /* CONFIG_ATH9K_DEBUGFS */
+ 
+ #endif /* DEBUG_H */
diff --git a/package/mac80211/patches/530-ath9k_debugfs_chainmask.patch b/package/mac80211/patches/530-ath9k_debugfs_chainmask.patch
new file mode 100644
index 0000000000..a26b4dc8aa
--- /dev/null
+++ b/package/mac80211/patches/530-ath9k_debugfs_chainmask.patch
@@ -0,0 +1,130 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -75,6 +75,90 @@ static const struct file_operations fops
+ 
+ #endif
+ 
++static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->tx_chainmask);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	unsigned long mask;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &mask))
++		return -EINVAL;
++
++	common->tx_chainmask = mask;
++	sc->sc_ah->caps.tx_chainmask = mask;
++	return count;
++}
++
++static const struct file_operations fops_tx_chainmask = {
++	.read = read_file_tx_chainmask,
++	.write = write_file_tx_chainmask,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++
++static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", common->rx_chainmask);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
++	unsigned long mask;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &mask))
++		return -EINVAL;
++
++	common->rx_chainmask = mask;
++	sc->sc_ah->caps.rx_chainmask = mask;
++	return count;
++}
++
++static const struct file_operations fops_rx_chainmask = {
++	.read = read_file_rx_chainmask,
++	.write = write_file_rx_chainmask,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++
+ static ssize_t read_file_dma(struct file *file, char __user *user_buf,
+ 			     size_t count, loff_t *ppos)
+ {
+@@ -574,6 +658,16 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 		goto err;
+ #endif
+ 
++	sc->debug.debugfs_rx_chainmask = debugfs_create_file("rx_chainmask",
++		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
++	if (!sc->debug.debugfs_rx_chainmask)
++		goto err;
++
++	sc->debug.debugfs_tx_chainmask = debugfs_create_file("tx_chainmask",
++		S_IRUSR | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
++	if (!sc->debug.debugfs_tx_chainmask)
++		goto err;
++
+ 	sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUSR,
+ 				       sc->debug.debugfs_phy, sc, &fops_dma);
+ 	if (!sc->debug.debugfs_dma)
+@@ -617,6 +711,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
+ 	struct ath_common *common = ath9k_hw_common(ah);
+ 	struct ath_softc *sc = (struct ath_softc *) common->priv;
+ 
++	debugfs_remove(sc->debug.debugfs_tx_chainmask);
++	debugfs_remove(sc->debug.debugfs_rx_chainmask);
+ 	debugfs_remove(sc->debug.debugfs_xmit);
+ 	debugfs_remove(sc->debug.debugfs_wiphy);
+ 	debugfs_remove(sc->debug.debugfs_rcstat);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -123,6 +123,8 @@ struct ath_stats {
+ };
+ 
+ struct ath9k_debug {
++	struct dentry *debugfs_rx_chainmask;
++	struct dentry *debugfs_tx_chainmask;
+ 	struct dentry *debugfs_phy;
+ 	struct dentry *debugfs_debug;
+ 	struct dentry *debugfs_dma;
diff --git a/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch b/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch
deleted file mode 100644
index b973dbb2aa..0000000000
--- a/package/mac80211/patches/530-ath9k_debugfs_regaccess.patch
+++ /dev/null
@@ -1,128 +0,0 @@
---- a/drivers/net/wireless/ath/ath9k/debug.c
-+++ b/drivers/net/wireless/ath/ath9k/debug.c
-@@ -634,6 +634,86 @@ static const struct file_operations fops
- 	.owner = THIS_MODULE
- };
- 
-+static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
-+                                size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	char buf[32];
-+	unsigned int len;
-+
-+	len = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.regidx);
-+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
-+}
-+
-+static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	unsigned long regidx;
-+	char buf[32];
-+	ssize_t len;
-+
-+	len = min(count, sizeof(buf) - 1);
-+	if (copy_from_user(buf, user_buf, len))
-+		return -EINVAL;
-+
-+	buf[len] = '\0';
-+	if (strict_strtoul(buf, 0, &regidx))
-+		return -EINVAL;
-+
-+	sc->debug.regidx = regidx;
-+	return count;
-+}
-+
-+static const struct file_operations fops_regidx = {
-+	.read = read_file_regidx,
-+	.write = write_file_regidx,
-+	.open = ath9k_debugfs_open,
-+	.owner = THIS_MODULE
-+};
-+
-+static ssize_t read_file_regval(struct file *file, char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_hw *ah = sc->sc_ah;
-+	char buf[32];
-+	unsigned int len;
-+	u32 regval;
-+
-+	regval = REG_READ_D(ah, sc->debug.regidx);
-+	len = snprintf(buf, sizeof(buf), "0x%08x\n", regval);
-+	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
-+}
-+
-+static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
-+			     size_t count, loff_t *ppos)
-+{
-+	struct ath_softc *sc = file->private_data;
-+	struct ath_hw *ah = sc->sc_ah;
-+	unsigned long regval;
-+	char buf[32];
-+	ssize_t len;
-+
-+	len = min(count, sizeof(buf) - 1);
-+	if (copy_from_user(buf, user_buf, len))
-+		return -EINVAL;
-+
-+	buf[len] = '\0';
-+	if (strict_strtoul(buf, 0, &regval))
-+		return -EINVAL;
-+
-+	REG_WRITE_D(ah, sc->debug.regidx, regval);
-+	return count;
-+}
-+
-+static const struct file_operations fops_regval = {
-+	.read = read_file_regval,
-+	.write = write_file_regval,
-+	.open = ath9k_debugfs_open,
-+	.owner = THIS_MODULE
-+};
-+
- int ath9k_init_debug(struct ath_hw *ah)
- {
- 	struct ath_common *common = ath9k_hw_common(ah);
-@@ -694,6 +774,17 @@ int ath9k_init_debug(struct ath_hw *ah)
- 	if (!sc->debug.debugfs_xmit)
- 		goto err;
- 
-+	sc->debug.regidx = 0;
-+	sc->debug.debugfs_regidx = debugfs_create_file("regidx",
-+			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regidx);
-+	if (!sc->debug.debugfs_regidx)
-+		goto err;
-+
-+	sc->debug.debugfs_regval = debugfs_create_file("regval",
-+			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regval);
-+	if (!sc->debug.debugfs_regval)
-+		goto err;
-+
- 	return 0;
- err:
- 	ath9k_exit_debug(ah);
-@@ -707,6 +798,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
- 
- 	debugfs_remove(sc->debug.debugfs_tx_chainmask);
- 	debugfs_remove(sc->debug.debugfs_rx_chainmask);
-+	debugfs_remove(sc->debug.debugfs_regval);
-+	debugfs_remove(sc->debug.debugfs_regidx);
- 	debugfs_remove(sc->debug.debugfs_xmit);
- 	debugfs_remove(sc->debug.debugfs_wiphy);
- 	debugfs_remove(sc->debug.debugfs_rcstat);
---- a/drivers/net/wireless/ath/ath9k/debug.h
-+++ b/drivers/net/wireless/ath/ath9k/debug.h
-@@ -132,6 +132,9 @@ struct ath9k_debug {
- 	struct dentry *debugfs_rcstat;
- 	struct dentry *debugfs_wiphy;
- 	struct dentry *debugfs_xmit;
-+	struct dentry *debugfs_regidx;
-+	struct dentry *debugfs_regval;
-+	u32 regidx;
- 	struct ath_stats stats;
- };
- 
diff --git a/package/mac80211/patches/540-ath9k_debugfs_regaccess.patch b/package/mac80211/patches/540-ath9k_debugfs_regaccess.patch
new file mode 100644
index 0000000000..b927b55137
--- /dev/null
+++ b/package/mac80211/patches/540-ath9k_debugfs_regaccess.patch
@@ -0,0 +1,128 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -638,6 +638,86 @@ static const struct file_operations fops
+ 	.owner = THIS_MODULE
+ };
+ 
++static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
++                                size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	char buf[32];
++	unsigned int len;
++
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.regidx);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	unsigned long regidx;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &regidx))
++		return -EINVAL;
++
++	sc->debug.regidx = regidx;
++	return count;
++}
++
++static const struct file_operations fops_regidx = {
++	.read = read_file_regidx,
++	.write = write_file_regidx,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
++static ssize_t read_file_regval(struct file *file, char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_hw *ah = sc->sc_ah;
++	char buf[32];
++	unsigned int len;
++	u32 regval;
++
++	regval = REG_READ_D(ah, sc->debug.regidx);
++	len = snprintf(buf, sizeof(buf), "0x%08x\n", regval);
++	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
++}
++
++static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
++			     size_t count, loff_t *ppos)
++{
++	struct ath_softc *sc = file->private_data;
++	struct ath_hw *ah = sc->sc_ah;
++	unsigned long regval;
++	char buf[32];
++	ssize_t len;
++
++	len = min(count, sizeof(buf) - 1);
++	if (copy_from_user(buf, user_buf, len))
++		return -EINVAL;
++
++	buf[len] = '\0';
++	if (strict_strtoul(buf, 0, &regval))
++		return -EINVAL;
++
++	REG_WRITE_D(ah, sc->debug.regidx, regval);
++	return count;
++}
++
++static const struct file_operations fops_regval = {
++	.read = read_file_regval,
++	.write = write_file_regval,
++	.open = ath9k_debugfs_open,
++	.owner = THIS_MODULE
++};
++
+ int ath9k_init_debug(struct ath_hw *ah)
+ {
+ 	struct ath_common *common = ath9k_hw_common(ah);
+@@ -700,6 +780,17 @@ int ath9k_init_debug(struct ath_hw *ah)
+ 	if (!sc->debug.debugfs_xmit)
+ 		goto err;
+ 
++	sc->debug.regidx = 0;
++	sc->debug.debugfs_regidx = debugfs_create_file("regidx",
++			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regidx);
++	if (!sc->debug.debugfs_regidx)
++		goto err;
++
++	sc->debug.debugfs_regval = debugfs_create_file("regval",
++			S_IRUSR|S_IWUSR, sc->debug.debugfs_phy, sc, &fops_regval);
++	if (!sc->debug.debugfs_regval)
++		goto err;
++
+ 	return 0;
+ err:
+ 	ath9k_exit_debug(ah);
+@@ -713,6 +804,8 @@ void ath9k_exit_debug(struct ath_hw *ah)
+ 
+ 	debugfs_remove(sc->debug.debugfs_tx_chainmask);
+ 	debugfs_remove(sc->debug.debugfs_rx_chainmask);
++	debugfs_remove(sc->debug.debugfs_regval);
++	debugfs_remove(sc->debug.debugfs_regidx);
+ 	debugfs_remove(sc->debug.debugfs_xmit);
+ 	debugfs_remove(sc->debug.debugfs_wiphy);
+ 	debugfs_remove(sc->debug.debugfs_rcstat);
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -132,6 +132,9 @@ struct ath9k_debug {
+ 	struct dentry *debugfs_rcstat;
+ 	struct dentry *debugfs_wiphy;
+ 	struct dentry *debugfs_xmit;
++	struct dentry *debugfs_regidx;
++	struct dentry *debugfs_regval;
++	u32 regidx;
+ 	struct ath_stats stats;
+ };
+