[Bug] Various abnormal WiFi behaviors with Linux 3.8 on arm/imx23

[Bug] Various abnormal WiFi behaviors with Linux 3.8 on arm/imx23

[Guan Xin]

Hello,

I have just moved from Linux 3.7.x to Linux 3.8.x because 3.7.x is
EOL-ed. On an iMX233-OLinuXino-MICRO with USB WiFi adapters I got the
following problems which were never present in Linux 3.7.x.

Error 1:
At first I used a USB-WiFi adapter with the RTL8192CU chip. The
rtlwifi driver showed nothing wrong in dmesg. However, I could get
nothing when scanning for APs. It looks exactly like there are no AP
at all. Of course I could not associate with my AP either.
I also tried to use the manufacturer's driver, same problem.

Error 2:
Then I changed to use an adapter with the RT5370 chip. This time I got
scanning working. It can also associate with the AP and works as
expected. The problem is -- when I tried to add the wlan IF to a
bridge, I got this:
"can't add wlan0 to bridge br0: Operation not supported"

Here are some of my kernel config options:
CONFIG_RT2X00=m
CONFIG_RT2500USB=m
CONFIG_RT73USB=m
CONFIG_RT2800USB=m
CONFIG_RT2800USB_RT33XX=y
CONFIG_RT2800USB_RT35XX=y
CONFIG_RT2800USB_RT53XX=y
CONFIG_RT2800USB_UNKNOWN=y
CONFIG_RT2800_LIB=m
CONFIG_RT2X00_LIB_USB=m
CONFIG_RT2X00_LIB=m
CONFIG_RT2X00_LIB_FIRMWARE=y
CONFIG_RT2X00_LIB_CRYPTO=y
CONFIG_RT2X00_LIB_LEDS=y
# CONFIG_RT2X00_DEBUG is not set
CONFIG_RTL8192CU=m
CONFIG_RTLWIFI=m
CONFIG_RTLWIFI_DEBUG=y
CONFIG_RTL8192C_COMMON=m

I will post more information if necessary.

Best regards,
Guan

Re: [Bug] Various abnormal WiFi behaviors with Linux 3.8 on arm/imx23

[Guan Xin]

On Mon, Mar 4, 2013 at 1:44 AM, Guan Xin <guanx.bac@gmail.com> wrote:
> Hello,
>
> I have just moved from Linux 3.7.x to Linux 3.8.x because 3.7.x is
> EOL-ed. On an iMX233-OLinuXino-MICRO with USB WiFi adapters I got the
> following problems which were never present in Linux 3.7.x.
> ... ...

Today I upgraded from 3.8.1 to 3.8.2 and started to see some errors in dmesg:

[   35.160000] rtl8192cu: Chip version 0x11
[   35.160000] rtl8192cu:_rtl92cu_read_adapter_info():<0-0> EEPROM
ID(0xffff) is invalid!!
[   35.160000] rtlwifi: rx_max_size 15360, rx_urb_num 8, in_ep 1
[   35.160000] rtl8192cu: Loading firmware rtlwifi/rtl8192cufw.bin
[   35.170000] usbcore: registered new interface driver rtl8192cu
[   35.240000] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   35.240000] rtlwifi: wireless switch is on
... ...
[   89.900000] rtl8192cu: MAC auto ON okay!
[   89.980000] rtl8192cu:rtl92c_llt_write():<0-0> Failed to polling
write LLT done at address 0! _LLT_OP_VALUE(3)
[   89.980000] rtl8192cu: ===> rtl92c_init_llt_table #1 fail
[   89.980000] rtl8192cu:_rtl92cu_init_mac():<0-0> Failed to init LLT Table!
[   89.980000] rtl8192cu:rtl92cu_hw_init():<0-0> init mac failed!


Guan

Re: [Bug] Various abnormal WiFi behaviors with Linux 3.8 on arm/imx23

[Guan Xin]

On Mon, Mar 4, 2013 at 11:43 PM, Guan Xin <guanx.bac@gmail.com> wrote:
>
> Today I upgraded from 3.8.1 to 3.8.2 and started to see some errors in dmesg:
>

This problem is still there in Linux 3.9-rc1.