I recently compiled the new kernel for my odroid u2 and noticed my TPLink TL-WN823N usb wireless adapter stopped working. I went through the commits and found the following changes to the defconfig:
-CONFIG_RTL8192CU=m
-CONFIG_RTLWIFI=m
-CONFIG_RTLWIFI_DEBUG=y
-CONFIG_RTL8192C_COMMON=m
+# CONFIG_RTL8192CU is not set
+CONFIG_RTL8192CU_V40=m

I am not sure if its an issue with the wireless driver (v4.0) or if additional settings are missing. I tried to compile 3.8.13.16 with those settings and still didn't seem to work. Not sure what you could do, but though I'd let you know.

lsmod 3.8.13.14
Module Size Used by
nfnetlink_log 7661 0
nfnetlink 4106 1 nfnetlink_log
ipv6 262878 24
dm_crypt 14809 0
dm_mod 70048 1 dm_crypt
rtl8192cu 92885 0
rtlwifi 78850 1 rtl8192cu
rtl8192c_common 59657 1 rtl8192cu
smsc95xx 19099 0
usbnet 19456 1 smsc95xx
gpio_keys 7070 0

lsmod 3.8.13.16
Module Size Used by
nfnetlink_log 7713 0
nfnetlink 4090 1 nfnetlink_log
ipv6 267433 26
dm_crypt 14855 0
rtl8192cu 521699 0
smsc95xx 19079 0
usbnet 19408 1 smsc95xx
gpio_keys 7087 0
dm_mod 70172 1 dm_crypt

Thanks,
Eric