AR9271 driver not creating wlan0 interface

AR9271 driver not creating wlan0 interface

[Venkat Hallale]

Hi,

I am using the Olimex USB MOD-WIFI-AR9271 USB dongle on the ARM based
board with Linux kernel-4.12.29-yocto-standard. It is based on the
AR9271 chip-set and the drive I used which comes along with the main
line Kernel i.e. bundled with 4.2 kernel.


As it is loading all the required drivers, here is the lsmod output.

 root@337D66:~# lsmod
Module                  Size  Used by
ath9k_htc              57344  0
ath9k_common           16384  1 ath9k_htc
ath9k_hw              352256  2 ath9k_htc,ath9k_common
ath                    24576  3 ath9k_htc,ath9k_hw,ath9k_common
mac80211              512000  1 ath9k_htc
cfg80211              471040  4 ath9k_htc,mac80211,ath,ath9k_common
usb_f_ecm              16384  1
g_ether                16384  0
usb_f_rndis            24576  2 g_ether
u_ether                20480  3 usb_f_ecm,g_ether,usb_f_rndis
libcomposite           45056  3 usb_f_ecm,g_ether,usb_f_rndis
configfs               28672  4 usb_f_ecm,usb_f_rndis,libcomposite
leds_pca955x           16384  0
ci_hdrc_imx            20480  0
ci_hdrc                49152  1 ci_hdrc_imx
ehci_hcd               65536  1 ci_hdrc
usbmisc_imx            20480  1 ci_hdrc_imx


The dmesg logs are,

[  623.054126] usb 1-1.1: new high-speed USB device number 7 using ci_hdrc
[  623.243317] usb 1-1.1: ath9k_htc: Firmware
ath9k_htc/htc_9271-1.4.0.fw requested
[  623.541841] usb 1-1.1: ath9k_htc: Transferred FW:
ath9k_htc/htc_9271-1.4.0.fw, size: 51008
[  623.794152] ath9k_htc 1-1.1:1.0: ath9k_htc: HTC initialized with 33 credits
[  624.095253] ath9k_htc 1-1.1:1.0: ath9k_htc: FW Version: 1.4
[  624.100988] ath9k_htc 1-1.1:1.0: FW RMW support: On
[  624.106028] ath: EEPROM regdomain: 0x809c
[  624.106037] ath: EEPROM indicates we should expect a country code
[  624.106537] ath: doing EEPROM country->regdmn map search
[  624.106549] ath: country maps to regdmn code: 0x52
[  624.106557] ath: Country alpha2 being used: CN
[  624.106564] ath: Regpair used: 0x52
[  624.131101] ieee80211 phy1: Atheros AR9271 Rev:1
[  624.513216] usb 1-1.1: ath9k_htc: USB layer deinitialized


But it is not creating any wlan0 interfaces.  Any pointers to solve
this issue will be greatly appreciated.

If this is not the right forum to discuss, please excuse me and ignore
the email.

Regards,
Venkat