I'm trying to test a rtl8723bs sdio wifi module on a development board (LicheePi, Allwinner V3s). When compiling the kernel I ensured that cfg80211 (Prism2.5/3 USB driver) and the RTL8723BS driver would be compiled into module. (The branch pulled: git clone -b zero-5.2.y --depth 1 https://github.com/Lichee-Pi/linux.git)
The file system is built with debootstrap: sudo debootstrap --foreign --verbose --arch=armhf buster rootfs http://mirrors.huaweicloud.com/debian/
The generated cfg80211.ko and r8723bs.ko are moved into the file system built before. And the firmware (rtl8723bs_nic.bin) is placed in /lib/firmware/rtlwifi/.
After launch the board:
root@localhost:~# ls
cfg80211.ko r8723bs.ko
root@localhost:~# insmod cfg80211.ko
[ 42.612104] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 42.681722] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 42.691307] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 42.700084] cfg80211: failed to load regulatory.db
root@localhost:~# insmod r8723bs.ko
[ 7717.536447] r8723bs: module is from the staging directory, the quality is unknown, you have been warned.
[ 7717.585596] RTL8723BS: module init start
[ 7717.589700] RTL8723BS: rtl8723bs v4.3.5.5_12290.20140916_BTCOEX20140507-4E40
[ 7717.596742] RTL8723BS: rtl8723bs BT-Coex version = BTCOEX20140507-4E40
[ 7717.620428] pnetdev = cdfb5f40
[ 7717.659867] RTL8723BS: rtw_ndev_init(wlan0)
[ 7717.679508] RTL8723BS: module init ret =0
root@localhost:~# ifconfig -a
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
loop txqueuelen 1000 (Local Loopback)
RX packets 20480 bytes 1884160 (1.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 20480 bytes 1884160 (1.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 0c:cf:89:32:c3:90 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
root@localhost:~# sudo ifconfig wlan0 up
[ 7727.036681] rtl8723bs: acquire FW from file:rtlwifi/rtl8723bs_nic.bin
SIOCSIFFLAGS: Operation not permitted
It seems that the firmware is acquired normally, and the module is successfully recognized before the infomation SIOCSIFFLAGS: Operation not permitted (Perhaps). But wlan0 could not be asserted. It seems like an authority issue but the root has been used.
Maybe wlan0 should be shown in ifconfig without -a when successfully asserted.
Thank you.