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====== Tehnoetic WiFi (AR9271) support in Replicant ======

With considerable delay due to the workload at [[https://ceata.org|Ceata]] and [[https://tehnoetic.com|Tehnoetic]], support for ath9k_htc WiFi adapters is now enabled in a modified nonofficial version of Replicant (tested with Tehnoetic S2 i9100 phone for now). A big thank you to [[http://paulk.fr/|Paul]], [[http://replicant.us|Replicant]] lead developer, for answering Tiberiu's technical questions, to our Tehnoetic colleague [[http://florentindimitriu.info/|Florentin]] for the assistance with testing the WiFi support and of course to our wonderful customers and [[#Donate_or_order|donor(s)]].

For using the Tehonetic WiFi in Replicant, one has to build Replicant using [[#tehnoetic_wifi_patches|Tiberiu's patches]], [[https://git.replicant.us/tehnoetic/kernel_samsung_smdk4412/tree/ath9k_htc|Tehnoetic repository]] hosted at git.replicant.us **OR...** download this [[http://tehnoetic.com/download/replicant-4.2-i9100-nonofficial-tehnoetic.zip| modified, nonofficial image of Replicant]] prebuilt by Tehnoetic.

<code>
md5sum replicant-4.2-i9100-nonofficial-tehnoetic.zip
2eda7d1e49dfd299e59ffdb881bc1a17  replicant-4.2-i9100-nonofficial-tehnoetic.zip
</code>

To have WiFi using this modified nonofficial Replicant version we use command line. The plan was and still is to have full ath9k_htc integration with the GUI, but this proved to involve heavy changes due to the fact the Android Java and C++ code for S2 is written for the way the internal Broadcom chip works. We will do our best to develop GUI integration in newer version of Replicant. Your orders from [[https://tehnoetic.com|Tehnoetic]] and your [[#donate_or_order|donations]] to Tiberiu can help speed up the development.

Tested on [[https://tehnoetic.com/tehnoetic-s2-phone-replicant|Tehnoetic S2 phone]] to work with AR9271-based adapters:
  * [[https://tehnoetic.com/tehnoetic-wireless-adapter-gnu-linux-libre-tet-n150|Tehnoetic N150 Mini WiFi adapter]]
  * [[https://tehnoetic.com/tet-n150hga|Tehnoetic N150 High Gain Antenna WiFi adapter]]

For orders at Tehnoetic, we accept credit card (don't need to log into PayPal), PayPal, Bitcoin and for EU customers, bank transfer too.

To donate, you don't need to have a PayPal account or to log in your PayPal account. You can donate by credit card by clicking on the Continue link at the bottom of the page. 
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**Warning!** This modified nonofficial Replicant version is experimental and until this moment we haven't been able to get WiFi working after a reboot without reformatting /data partition. We are not responsible for any loss of your applications and settings you had saved in /data partition. That's why we recommend backing up the /data partition.
===== Back up /data =====

First, we recommed you back up your /data partition using `adb pull' or `adb backup'. For installing ADB, see [[http://redmine.replicant.us/projects/replicant/wiki/ToolsInstallation#ADB|ToolsInstallation]] at Replicant wiki.

===== Log in as root =====

==== Using ADB ====

Get root shell with ADB after you connect the phone to your computer in Debugging mode.
<code>
adb root
adb shell
</code>

==== Using Terminal ====

Or get root shell using the free Terminal application. Open it and type:
<code>
su
</code>

Grant the Terminal application the rights to use root.

===== Insert modules =====

Insert driver modules in this correct order using insmod.
<code>
adb shell
cd /system/lib/modules/
insmod mac80211.ko && insmod ath.ko && insmod ath9k_hw.ko && insmod ath9k_common.ko && insmod ath9k_htc.ko
</code>

Inserting these drivers using dependencies with `modprobe ath9k_htc' seems to throw warnings regarding missing symbols, as shown by dmesg. So for now don't use modprobe, use insmod instead.

===== Copy free firmware =====

Extract and copy in the anonical location the free [[http://packages.trisquel.info/en/belenos/open-ath9k-htc-firmware|firmware v1.3.1]] from the Trisquel package
<code>
adb push htc_9271.fw /sdcard/
adb shell
mount -o rw,remount /system # /system fs is read-only 
mkdir /etc/firmware/
cp /sdcard/htc_9271.fw /etc/firmware/
mount -o ro,remount /system
</code>

===== wpa_supplicant.conf =====

Save the name (SSID) and password of your WPA2 network.

<code>
adb shell
nano /data/misc/wifi/wpa_supplicant.conf
</code>

Or create the file locally with your favorite editor:

<code>
network={
    ssid="My Network Name"
    psk="MyNetworkPassword"
}
</code>

and then upload it onto the phone:
<code>
adb push wpa_supplicant.conf /data/misc/wifi/
</code>

===== Connect script =====

Create this small script file which launches wpa_supplicant and sends a DHCP request to your WiFi router. 
<code>
adb shell
nano /data/misc/wifi/connect.sh
</code>

<code>
wpa_supplicant -B -iwlan0 -c/data/misc/wifi/wpa_supplicant.conf
dhcpcd wlan0
</code>

===== Plug the Tehnoetic WiFi mini adapter =====

Use an OTG cable to connect the [[https://tehnoetic.com/tehnoetic-wireless-adapter-gnu-linux-libre-tet-n150|Tehnoetic WiFi mini adapter]] (AR9271-based) to the phone. If you can use a "Y" one or a USB hub to power the adapter from an external current source, that can save you from system crashes that can happen because of potential power consumption spikes.

===== Test the Internet connection =====

Use the Terminal application to login as root and run the connect script:
<code>
su
bash /data/misc/wifi/connect.sh
dhcpcd[3566]: version 5.5.6 starting
dhcpcd[3566]: wlan0: waiting for carrier
dhcpcd[3566]: wlan0: carrier acquired
dhcpcd[3566]: wlan0: broadcasting for a lease
dhcpcd[3566]: wlan0: offered 192.168.0.104 from 192.168.0.1
dhcpcd[3566]: wlan0: acknowledged 192.168.0.104 from 192.168.0.1
dhcpcd[3566]: wlan0: checking for 192.168.0.104
dhcpcd[3566]: wlan0: leased 192.168.0.104 for 7200 seconds
dhcpcd[3566]: forked to background, chid pid 3624
</code>

Test the Internet connection using ping:

<code>
ping replicant.us
</code>

If replicant.us can't be resolved, ping a public IP:

<code>
ping <some-public-IP-here>
</code>

If this doesn't work either, then reboot in Recovery mode, wipe user data (format /data partition), reboot again and repeat the steps starting with [[#wpa_supplicant.conf]]

If pinging an IP address works, but not a domain name, then it means the WiFi router hasn't offered a (working) DNS server, so set one or two:
<code>
setprop net.dns1 <some-DNS-IP-you-know>
setprop net.dns2 <some-other-DNS-IP-you-know>
</code>

Feel free to add these setprop lines to the connect.sh script.

===== Recover after a system crash =====

Long press Power button, select Reboot, and select to reboot to Recovery. Once in recovery mode, use Volume buttons to select "wipe data/factory reset" and confirm "Wipe all user data". Upon finishing the wiping process, select "reboot system now".

<code>
Formatting /data...
Formatting /cache...
Formatting /sd-ext...
Formatting /sdcard/.android_secure...
Data wipe complete.
</code>

The Replicant system will take a lit bit longer to boot up.

We couldn't find a better solution to recover from a system crash and have the WiFi working again. We will try to find one and if you find one before us, please let us know at [[mailto:info@tehnoetic.com|info@tehnoetic.com]].

To have the WiFi working again, start again from the step [[#wpa_supplicant.conf]].

===== Donate or order =====

Enabling the support in Replicant for the Tehnoetic WiFi (ath9k_htc) took development time. Please consider donating to Tiberiu or order from Tehnoetic as a way to thank you for having WiFi on your Replicant-powered phone and to help the development of support for future external adapters (Bluetooth, GPS, etc). 

To order from Tehnoetic, please visit the catalog of products at [[https://tehnoetic.com|tehnoetic.com]]. We accept credit card, PayPal, Bitcoin and for EU customers, bank transfer too.

To donate to Tiberiu, you don't need to have a PayPal account or to log in your PayPal account. You can donate by credit card by clicking on the Continue link at the bottom of the page.
<code>
Don't have a PayPal account?
Use your credit card or bank account (where available). _Continue_
</code> 

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<form action="https://www.paypal.com/cgi-bin/webscr" method="post" target="_top">
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<input type="hidden" name="hosted_button_id" value="MWXUVZV2NK5Z2">
<input type="image" src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online!">
<img alt="" border="0" src="https://www.paypalobjects.com/en_US/i/scr/pixel.gif" width="1" height="1">
</form>
</html>

Thank you for your donations below and for your Tehnoetic orders!
  * Fil Bergamo (50 EUR)
  * You

===== Tehnoetic WiFi patches =====

All modifications presented below are released under GNU GPL.

Git repository: kernel/samsung/smdk4412

Apply the main patch which enables building the kernel with ath9k_htc driver:

<code>
diff --git a/arch/arm/configs/cyanogenmod_i9100_defconfig b/arch/arm/configs/cyanogenmod_i9100_defconfig
index fc3c88f..e5d11b0 100644
--- a/arch/arm/configs/cyanogenmod_i9100_defconfig
+++ b/arch/arm/configs/cyanogenmod_i9100_defconfig
@@ -893,6 +893,7 @@ CONFIG_NETFILTER_XT_TARGET_CONNMARK=y
 # CONFIG_NETFILTER_XT_TARGET_DSCP is not set
 # CONFIG_NETFILTER_XT_TARGET_HL is not set
 # CONFIG_NETFILTER_XT_TARGET_IDLETIMER is not set
+# CONFIG_NETFILTER_XT_TARGET_LED is not set
 CONFIG_NETFILTER_XT_TARGET_MARK=y
 CONFIG_NETFILTER_XT_TARGET_NFLOG=y
 CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y
@@ -1157,10 +1158,21 @@ CONFIG_CFG80211_WEXT=y
 CONFIG_WIRELESS_EXT_SYSFS=y
 # CONFIG_LIB80211 is not set
 # CONFIG_CFG80211_ALLOW_RECONNECT is not set
-# CONFIG_MAC80211 is not set
+CONFIG_MAC80211=m
+CONFIG_MAC80211_HAS_RC=y
+# CONFIG_MAC80211_RC_PID is not set
+CONFIG_MAC80211_RC_MINSTREL=y
+CONFIG_MAC80211_RC_MINSTREL_HT=y
+CONFIG_MAC80211_RC_DEFAULT_MINSTREL=y
+CONFIG_MAC80211_RC_DEFAULT="minstrel_ht"
+# CONFIG_MAC80211_MESH is not set
+CONFIG_MAC80211_LEDS=y
+# CONFIG_MAC80211_DEBUGFS is not set
+# CONFIG_MAC80211_DEBUG_MENU is not set
 # CONFIG_WIMAX is not set
 CONFIG_RFKILL=y
 CONFIG_RFKILL_PM=y
+CONFIG_RFKILL_LEDS=y
 # CONFIG_RFKILL_INPUT is not set
 # CONFIG_RFKILL_REGULATOR is not set
 # CONFIG_RFKILL_GPIO is not set
@@ -1366,10 +1378,24 @@ CONFIG_TUN=y
 # CONFIG_NETDEV_1000 is not set
 # CONFIG_NETDEV_10000 is not set
 CONFIG_WLAN=y
+# CONFIG_LIBERTAS_THINFIRM is not set
+# CONFIG_AT76C50X_USB is not set
 # CONFIG_USB_ZD1201 is not set
 # CONFIG_USB_NET_RNDIS_WLAN is not set
+# CONFIG_RTL8187 is not set
+# CONFIG_MAC80211_HWSIM is not set
 CONFIG_WIFI_CONTROL_FUNC=y
-# CONFIG_ATH_COMMON is not set
+CONFIG_ATH_COMMON=m
+# CONFIG_ATH_DEBUG is not set
+# CONFIG_ATH6KL is not set
+CONFIG_5GH_WLAN_COUNTRY_CODE=y
+CONFIG_ATH9K_HW=m
+CONFIG_ATH9K_COMMON=m
+# CONFIG_ATH9K is not set
+CONFIG_ATH9K_HTC=m
+# CONFIG_ATH9K_HTC_DEBUGFS is not set
+# CONFIG_B43 is not set
+# CONFIG_B43LEGACY is not set
 CONFIG_BCM4330=m
 # CONFIG_BCM4334 is not set
 # CONFIG_BCM4335 is not set
@@ -1382,6 +1408,13 @@ CONFIG_WLAN_REGION_CODE=100
 # CONFIG_HOSTAP is not set
 # CONFIG_IWM is not set
 # CONFIG_LIBERTAS is not set
+# CONFIG_P54_COMMON is not set
+# CONFIG_RT2X00 is not set
+# CONFIG_RTL8192SE is not set
+# CONFIG_RTL8192CU is not set
+# CONFIG_WL1251 is not set
+# CONFIG_WL12XX_MENU is not set
+# CONFIG_ZD1211RW is not set
 # CONFIG_MWIFIEX is not set
 
 #
@@ -1455,6 +1488,7 @@ CONFIG_KEYBOARD_ATKBD=y
 CONFIG_KEYBOARD_GPIO=y
 # CONFIG_KEYBOARD_TCA6416 is not set
 # CONFIG_KEYBOARD_MATRIX is not set
+# CONFIG_KEYBOARD_LM8323 is not set
 # CONFIG_KEYBOARD_MAX7359 is not set
 # CONFIG_KEYBOARD_MCS is not set
 # CONFIG_KEYBOARD_MPR121 is not set
@@ -2326,6 +2360,7 @@ CONFIG_HID_PICOLCD=y
 # CONFIG_HID_PICOLCD_FB is not set
 # CONFIG_HID_PICOLCD_BACKLIGHT is not set
 # CONFIG_HID_PICOLCD_LCD is not set
+# CONFIG_HID_PICOLCD_LEDS is not set
 CONFIG_HID_QUANTA=y
 CONFIG_HID_ROCCAT=y
 CONFIG_HID_ROCCAT_COMMON=y
@@ -2550,7 +2585,44 @@ CONFIG_MMC_SDHCI_S3C_DMA=y
 # CONFIG_MMC_USHC is not set
 # CONFIG_MEMSTICK is not set
 # CONFIG_LEDS_SPFCW043 is not set
-# CONFIG_NEW_LEDS is not set
+CONFIG_NEW_LEDS=y
+CONFIG_LEDS_CLASS=y
+
+#
+# LED drivers
+#
+# CONFIG_LEDS_LM3530 is not set
+# CONFIG_LEDS_PCA9532 is not set
+# CONFIG_LEDS_GPIO is not set
+# CONFIG_LEDS_LP3944 is not set
+# CONFIG_LEDS_AN30259A is not set
+# CONFIG_LEDS_LP5521 is not set
+# CONFIG_LEDS_LP5523 is not set
+# CONFIG_LEDS_PCA955X is not set
+# CONFIG_LEDS_DAC124S085 is not set
+# CONFIG_LEDS_PWM is not set
+# CONFIG_LEDS_REGULATOR is not set
+# CONFIG_LEDS_MAX8997 is not set
+# CONFIG_LEDS_BD2802 is not set
+# CONFIG_LEDS_LT3593 is not set
+# CONFIG_LEDS_SWITCH is not set
+# CONFIG_LEDS_AAT1290A is not set
+CONFIG_LEDS_TRIGGERS=y
+
+#
+# LED Triggers
+#
+# CONFIG_LEDS_TRIGGER_TIMER is not set
+# CONFIG_LEDS_TRIGGER_HEARTBEAT is not set
+# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set
+# CONFIG_LEDS_TRIGGER_GPIO is not set
+# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set
+# CONFIG_LEDS_TRIGGER_SLEEP is not set
+# CONFIG_LEDS_TRIGGER_NOTIFICATION is not set
+
+#
+# iptables trigger is under Netfilter config (LED target)
+#
 # CONFIG_NFC_DEVICES is not set
 CONFIG_SWITCH=y
 CONFIG_SWITCH_GPIO=y
@@ -2639,6 +2711,7 @@ CONFIG_RTC_DRV_S3C=y
 CONFIG_STAGING=y
 # CONFIG_VIDEO_TM6000 is not set
 # CONFIG_USBIP_CORE is not set
+# CONFIG_W35UND is not set
 # CONFIG_PRISM2_USB is not set
 # CONFIG_ECHO is not set
 # CONFIG_BRCMUTIL is not set
@@ -3181,4 +3254,4 @@ CONFIG_HAS_IOMEM=y
 CONFIG_HAS_DMA=y
 CONFIG_CPU_RMAP=y
 CONFIG_NLATTR=y
-# CONFIG_AVERAGE is not set
+CONFIG_AVERAGE=y
diff --git a/drivers/net/wireless/ath/Kconfig b/drivers/net/wireless/ath/Kconfig
index 3945707..d1b2306 100755
--- a/drivers/net/wireless/ath/Kconfig
+++ b/drivers/net/wireless/ath/Kconfig
@@ -1,6 +1,6 @@
 menuconfig ATH_COMMON
 	tristate "Atheros Wireless Cards"
-	depends on CFG80211 && (!UML || BROKEN)
+	depends on CFG80211
 	---help---
 	  This will enable the support for the Atheros wireless drivers.
 	  ath5k, ath9k, ath9k_htc and ar9170 drivers share some common code, this option
@@ -22,6 +22,8 @@ config ATH_DEBUG
 	  Say Y, if you want to debug atheros wireless drivers.
 	  Right now only ath9k makes use of this.
 
-source "drivers/net/wireless/ath/ath6kl/Kconfig"
+source "drivers/net/wireless/ath/ath5k/Kconfig"
+source "drivers/net/wireless/ath/ath9k/Kconfig"
+source "drivers/net/wireless/ath/carl9170/Kconfig"
 
 endif
diff --git a/drivers/net/wireless/ath/Makefile b/drivers/net/wireless/ath/Makefile
index 214def7..0e8f528 100755
--- a/drivers/net/wireless/ath/Makefile
+++ b/drivers/net/wireless/ath/Makefile
@@ -1,12 +1,12 @@
-NOSTDINC_FLAGS := -I$(srctree)/include/compat/ \
-        -include $(srctree)/include/compat/linux/compat-2.6.h \
-        $(CFLAGS)
+obj-$(CONFIG_ATH5K)		+= ath5k/
+obj-$(CONFIG_ATH9K_HW)		+= ath9k/
+obj-$(CONFIG_CARL9170)		+= carl9170/
 
-obj-$(CONFIG_ATH6KL)		+= ath6kl/
 obj-$(CONFIG_ATH_COMMON)	+= ath.o
 
 ath-objs :=	main.o \
 		regd.o \
 		hw.o \
 		key.o
+
 ath-$(CONFIG_ATH_DEBUG) += debug.o
</code>

Revert these three commits:

<code>
git revert c421809918b7106b40a81134f9fb5103146fc715
git revert 44655588a0b361afa15761b5c58f5a558c1c181c
git revert 3cedbff33e9884fdf3f7aaaa83ab9774d8145d1f
</code>

And apply this patch to undo changes in big commit "samsung update 1" which broke ath9k_htc build:

<code>
diff --git a/drivers/net/wireless/ath/ath.h b/drivers/net/wireless/ath/ath.h
index 4596c33..7cf4317 100755
--- a/drivers/net/wireless/ath/ath.h
+++ b/drivers/net/wireless/ath/ath.h
@@ -71,7 +71,9 @@ struct ath_regulatory {
 	char alpha2[2];
 	u16 country_code;
 	u16 max_power_level;
+	u32 tp_scale;
 	u16 current_rd;
+	u16 current_rd_ext;
 	int16_t power_limit;
 	struct reg_dmn_pair_mapping *regpair;
 };
@@ -138,6 +140,9 @@ struct ath_common {
 	u8 curbssid[ETH_ALEN];
 	u8 bssidmask[ETH_ALEN];
 
+	u8 tx_chainmask;
+	u8 rx_chainmask;
+
 	u32 rx_bufsize;
 
 	u32 keymax;
@@ -156,7 +161,6 @@ struct ath_common {
 	const struct ath_bus_ops *bus_ops;
 
 	bool btcoex_enabled;
-	bool disable_ani;
 };
 
 struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
@@ -173,28 +177,23 @@ bool ath_hw_keyreset(struct ath_common *common, u16 entry);
 void ath_hw_cycle_counters_update(struct ath_common *common);
 int32_t ath_hw_get_listen_time(struct ath_common *common);
 
-extern __printf(2, 3) void ath_printk(const char *level, const char *fmt, ...);
-
-#define _ath_printk(level, common, fmt, ...)			\
-do {								\
-	__always_unused struct ath_common *unused = common;	\
-	ath_printk(level, fmt, ##__VA_ARGS__);			\
-} while (0)
+extern __attribute__ ((format (printf, 3, 4))) int
+ath_printk(const char *level, struct ath_common *common, const char *fmt, ...);
 
 #define ath_emerg(common, fmt, ...)				\
-	_ath_printk(KERN_EMERG, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_EMERG, common, fmt, ##__VA_ARGS__)
 #define ath_alert(common, fmt, ...)				\
-	_ath_printk(KERN_ALERT, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_ALERT, common, fmt, ##__VA_ARGS__)
 #define ath_crit(common, fmt, ...)				\
-	_ath_printk(KERN_CRIT, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_CRIT, common, fmt, ##__VA_ARGS__)
 #define ath_err(common, fmt, ...)				\
-	_ath_printk(KERN_ERR, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_ERR, common, fmt, ##__VA_ARGS__)
 #define ath_warn(common, fmt, ...)				\
-	_ath_printk(KERN_WARNING, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_WARNING, common, fmt, ##__VA_ARGS__)
 #define ath_notice(common, fmt, ...)				\
-	_ath_printk(KERN_NOTICE, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_NOTICE, common, fmt, ##__VA_ARGS__)
 #define ath_info(common, fmt, ...)				\
-	_ath_printk(KERN_INFO, common, fmt, ##__VA_ARGS__)
+	ath_printk(KERN_INFO, common, fmt, ##__VA_ARGS__)
 
 /**
  * enum ath_debug_level - atheros wireless debug level
@@ -239,7 +238,6 @@ enum ATH_DEBUG {
 	ATH_DBG_BTCOEX		= 0x00002000,
 	ATH_DBG_WMI		= 0x00004000,
 	ATH_DBG_BSTUCK		= 0x00008000,
-	ATH_DBG_MCI		= 0x00010000,
 	ATH_DBG_ANY		= 0xffffffff
 };
 
@@ -247,21 +245,27 @@ enum ATH_DEBUG {
 
 #ifdef CONFIG_ATH_DEBUG
 
-#define ath_dbg(common, dbg_mask, fmt, ...)				\
-do {									\
-	if ((common)->debug_mask & dbg_mask)				\
-		_ath_printk(KERN_DEBUG, common, fmt, ##__VA_ARGS__);	\
-} while (0)
-
+#define ath_dbg(common, dbg_mask, fmt, ...)			\
+({								\
+	int rtn;						\
+	if ((common)->debug_mask & dbg_mask)			\
+		rtn = ath_printk(KERN_DEBUG, common, fmt,	\
+				 ##__VA_ARGS__);		\
+	else							\
+		rtn = 0;					\
+								\
+	rtn;							\
+})
 #define ATH_DBG_WARN(foo, arg...) WARN(foo, arg)
 #define ATH_DBG_WARN_ON_ONCE(foo) WARN_ON_ONCE(foo)
 
 #else
 
-static inline  __attribute__ ((format (printf, 3, 4)))
-void ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
-	     const char *fmt, ...)
+static inline  __attribute__ ((format (printf, 3, 4))) int
+ath_dbg(struct ath_common *common, enum ATH_DEBUG dbg_mask,
+	const char *fmt, ...)
 {
+	return 0;
 }
 #define ATH_DBG_WARN(foo, arg...) do {} while (0)
 #define ATH_DBG_WARN_ON_ONCE(foo) ({				\
diff --git a/drivers/net/wireless/ath/debug.c b/drivers/net/wireless/ath/debug.c
index 508eccf..5367b10 100755
--- a/drivers/net/wireless/ath/debug.c
+++ b/drivers/net/wireless/ath/debug.c
@@ -14,7 +14,6 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <linux/export.h>
 #include "ath.h"
 
 const char *ath_opmode_to_string(enum nl80211_iftype opmode)
diff --git a/drivers/net/wireless/ath/hw.c b/drivers/net/wireless/ath/hw.c
index 19befb3..3f508e5 100755
--- a/drivers/net/wireless/ath/hw.c
+++ b/drivers/net/wireless/ath/hw.c
@@ -14,7 +14,6 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <linux/export.h>
 #include <asm/unaligned.h>
 
 #include "ath.h"
diff --git a/drivers/net/wireless/ath/key.c b/drivers/net/wireless/ath/key.c
index 4cf7c5e..a61ef3d6 100755
--- a/drivers/net/wireless/ath/key.c
+++ b/drivers/net/wireless/ath/key.c
@@ -15,7 +15,6 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
-#include <linux/export.h>
 #include <asm/unaligned.h>
 #include <net/mac80211.h>
 
@@ -106,8 +105,11 @@ static bool ath_hw_keysetmac(struct ath_common *common,
 		if (mac[0] & 0x01)
 			unicast_flag = 0;
 
-		macLo = get_unaligned_le32(mac);
-		macHi = get_unaligned_le16(mac + 4);
+		macHi = (mac[5] << 8) | mac[4];
+		macLo = (mac[3] << 24) |
+			(mac[2] << 16) |
+			(mac[1] << 8) |
+			mac[0];
 		macLo >>= 1;
 		macLo |= (macHi & 1) << 31;
 		macHi >>= 1;
diff --git a/drivers/net/wireless/ath/main.c b/drivers/net/wireless/ath/main.c
index 947ef45..c325202 100755
--- a/drivers/net/wireless/ath/main.c
+++ b/drivers/net/wireless/ath/main.c
@@ -57,25 +57,22 @@ struct sk_buff *ath_rxbuf_alloc(struct ath_common *common,
 }
 EXPORT_SYMBOL(ath_rxbuf_alloc);
 
-void ath_printk(const char *level, const char *fmt, ...)
+int ath_printk(const char *level, struct ath_common *common,
+	       const char *fmt, ...)
 {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
 	struct va_format vaf;
-#endif
 	va_list args;
+	int rtn;
 
 	va_start(args, fmt);
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
 	vaf.fmt = fmt;
 	vaf.va = &args;
 
-	printk("%sath: %pV", level, &vaf);
-#else
-	printk("%sath: ", level);
-	vprintk(fmt, args);
-#endif
+	rtn = printk("%sath: %pV", level, &vaf);
 
 	va_end(args);
+
+	return rtn;
 }
 EXPORT_SYMBOL(ath_printk);
diff --git a/drivers/net/wireless/ath/regd.c b/drivers/net/wireless/ath/regd.c
index 65ecb5b..028310f 100755
--- a/drivers/net/wireless/ath/regd.c
+++ b/drivers/net/wireless/ath/regd.c
@@ -15,7 +15,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/export.h>
 #include <net/cfg80211.h>
 #include <net/mac80211.h>
 #include "regd.h"
@@ -254,8 +253,6 @@ ath_reg_apply_active_scan_flags(struct wiphy *wiphy,
 	int r;
 
 	sband = wiphy->bands[IEEE80211_BAND_2GHZ];
-	if (!sband)
-		return;
 
 	/*
 	 * If no country IE has been received always enable active scan
diff --git a/drivers/net/wireless/ath/regd.h b/drivers/net/wireless/ath/regd.h
index 03a8268..172f63f 100755
--- a/drivers/net/wireless/ath/regd.h
+++ b/drivers/net/wireless/ath/regd.h
@@ -101,7 +101,7 @@ enum CountryCode {
 	CTRY_GERMANY = 276,
 	CTRY_GREECE = 300,
 	CTRY_GREENLAND = 304,
-	CTRY_GRENADA = 308,
+	CTRY_GRENEDA = 308,
 	CTRY_GUAM = 316,
 	CTRY_GUATEMALA = 320,
 	CTRY_HAITI = 332,
diff --git a/drivers/net/wireless/ath/regd_common.h b/drivers/net/wireless/ath/regd_common.h
index bdd2b4d..24b5383 100755
--- a/drivers/net/wireless/ath/regd_common.h
+++ b/drivers/net/wireless/ath/regd_common.h
@@ -332,7 +332,7 @@ static struct country_code_to_enum_rd allCountries[] = {
 	{CTRY_GERMANY, ETSI1_WORLD, "DE"},
 	{CTRY_GREECE, ETSI1_WORLD, "GR"},
 	{CTRY_GREENLAND, ETSI1_WORLD, "GL"},
-	{CTRY_GRENADA, FCC3_FCCA, "GD"},
+	{CTRY_GRENEDA, FCC3_FCCA, "GD"},
 	{CTRY_GUAM, FCC1_FCCA, "GU"},
 	{CTRY_GUATEMALA, FCC1_FCCA, "GT"},
 	{CTRY_HAITI, ETSI1_WORLD, "HT"},
diff --git a/lib/genalloc.c b/lib/genalloc.c
index bb1d323..ceaa003 100644
--- a/lib/genalloc.c
+++ b/lib/genalloc.c
@@ -14,7 +14,7 @@
 #include <linux/module.h>
 #include <linux/bitmap.h>
 #include <linux/genalloc.h>
-
+#include <linux/vmalloc.h>
 
 /* General purpose special memory pool descriptor. */
 struct gen_pool {
@@ -33,7 +33,6 @@ struct gen_pool_chunk {
 	unsigned long bits[0];		/* bitmap for allocating memory chunk */
 };
 
-
 /**
  * gen_pool_create() - create a new special memory pool
  * @order:	Log base 2 of number of bytes each bitmap bit
@@ -63,28 +62,25 @@ EXPORT_SYMBOL(gen_pool_create);
 
 /**
  * gen_pool_add_virt - add a new chunk of special memory to the pool
- * @pool:	Pool to add new memory chunk to
- * @virt:	Virtual starting address of memory chunk to add to pool
- * @phys:	Physical starting address of memory chunk to add to pool
- * @size:	Size in bytes of the memory chunk to add to pool
- * @nid:	Node id of the node the chunk structure and bitmap should be
- *       	allocated on, or -1
+ * @pool: pool to add new memory chunk to
+ * @virt: virtual starting address of memory chunk to add to pool
+ * @phys: physical starting address of memory chunk to add to pool
+ * @size: size in bytes of the memory chunk to add to pool
+ * @nid: node id of the node the chunk structure and bitmap should be
+ *       allocated on, or -1
  *
  * Add a new chunk of special memory to the specified pool.
  *
  * Returns 0 on success or a -ve errno on failure.
  */
-int __must_check
-gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phys,
-		  size_t size, int nid)
+int __must_check gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phys,
+		 size_t size, int nid)
 {
 	struct gen_pool_chunk *chunk;
-	int nbits = size >> pool->min_alloc_order;
-	int nbytes = sizeof(struct gen_pool_chunk) +
-				BITS_TO_LONGS(nbits) * sizeof(long);
+	size_t nbytes;
 
 	if (WARN_ON(!virt || virt + size < virt ||
-		    (virt & ((1 << pool->order) - 1))))
+	    (virt & ((1 << pool->order) - 1))))
 		return -EINVAL;
 
 	size = size >> pool->order;
@@ -92,14 +88,22 @@ gen_pool_add_virt(struct gen_pool *pool, unsigned long virt, phys_addr_t phys,
 		return -EINVAL;
 
 	nbytes = sizeof *chunk + BITS_TO_LONGS(size) * sizeof *chunk->bits;
-	chunk = kzalloc_node(nbytes, GFP_KERNEL, nid);
+
+	if (nbytes <= PAGE_SIZE)
+		chunk = kzalloc_node(nbytes, GFP_KERNEL, nid);
+	else
+		chunk = vmalloc(nbytes);
+
 	if (!chunk)
 		return -ENOMEM;
 
+	if (nbytes > PAGE_SIZE)
+		memset(chunk, 0, nbytes);
+
 	spin_lock_init(&chunk->lock);
+	chunk->phys_addr = phys;
 	chunk->start = virt >> pool->order;
 	chunk->size  = size;
-	chunk->phys_addr = phys;
 
 	write_lock(&pool->lock);
 	list_add(&chunk->next_chunk, &pool->chunks);
@@ -123,12 +127,11 @@ phys_addr_t gen_pool_virt_to_phys(struct gen_pool *pool, unsigned long addr)
 
 	read_lock(&pool->lock);
 	list_for_each(_chunk, &pool->chunks) {
-		unsigned long start_addr;
 		chunk = list_entry(_chunk, struct gen_pool_chunk, next_chunk);
 
-		start_addr = chunk->start << pool->order;
-		if (addr >= start_addr && addr < start_addr + chunk->size)
-			return chunk->phys_addr + addr - start_addr;
+		if (addr >= chunk->start &&
+		    addr < (chunk->start + chunk->size))
+			return chunk->phys_addr + addr - chunk->start;
 	}
 	read_unlock(&pool->lock);
 
@@ -147,6 +150,7 @@ void gen_pool_destroy(struct gen_pool *pool)
 {
 	struct gen_pool_chunk *chunk;
 	int bit;
+	size_t nbytes;
 
 	while (!list_empty(&pool->chunks)) {
 		chunk = list_entry(pool->chunks.next, struct gen_pool_chunk,
@@ -156,7 +160,13 @@ void gen_pool_destroy(struct gen_pool *pool)
 		bit = find_next_bit(chunk->bits, chunk->size, 0);
 		BUG_ON(bit < chunk->size);
 
-		kfree(chunk);
+		nbytes = sizeof *chunk + BITS_TO_LONGS(chunk->size) *
+			sizeof *chunk->bits;
+
+		if (nbytes <= PAGE_SIZE)
+			kfree(chunk);
+		else
+			vfree(chunk);
 	}
 	kfree(pool);
 }
</code>
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