linux-kernel - Re: r8712u cannot set essid

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Date:	Mon, 25 Apr 2011 12:32:09 +0800
From:	Jeff Chua <jeff.chua.linux@...il.com>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	lkml <linux-kernel@...r.kernel.org>, wlanfae@...ltek.com
Subject: Re: r8712u cannot set essid

On Mon, Apr 25, 2011 at 11:23 AM, Larry Finger
<Larry.Finger@...inger.net> wrote:
> On 04/24/2011 09:16 PM, Jeff Chua wrote:
> The code requires the interface to be up before the essid can be set. If you
> do it with the iwconfig command, you will see an error message.

I did that. Setting ssid works fine with iwlagn on the same system.

# modprobe r8712u
r8712u: module is from the staging directory, the quality is unknown,
you have been warned.
r8712u: DriverVersion: v7_0.20100831
r8712u: register rtl8712_netdev_ops to netdev_ops
r8712u: USB_SPEED_HIGH with 4 endpoints
r8712u: Boot from EFUSE: Autoload OK
r8712u: CustomerID = 0x0000
r8712u: MAC Address from efuse = 90:61:0c:01:8f:b0
usbcore: registered new interface driver r8712u

# ifconfig wlan0 up
r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
r8712u: 1 RCR=0x153f00e
r8712u: 2 RCR=0x553f00e

# iwconfig wlan0 essid "123"
# iwconfig wlan0
wlan0     unassociated  Nickname:"rtl_wifi"
          Mode:Auto  Access Point: Not-Associated   Sensitivity:0/0
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

> I'm not sure if this is a reasonable requirement before allowing the essid
> to be set. Any thoughts?

As long as it works, I don't mind. But it's not working. I've tried
all sorts of combination of "ifconfig up/down" + "iwconfig essid" but
still not working.

Here's more info if it helps.

# cat /proc/bus/usb/devices
T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=480  MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=07b8 ProdID=8188 Rev= 2.00
S:  Manufacturer=Manufacturer Realtek
S:  Product=RTL8188S WLAN Adapter
S:  SerialNumber=00e04c000001
C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 4 Cls=ff(vend.) Sub=ff Prot=ff Driver=r8712u
E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E:  Ad=0d(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms

# grep /usr/src/linux/drivers/net/wireless/rtlwifi/rtl8192cu/sw.c
{RTL_USB_DEVICE(0x07b8, 0x8188, rtl92cu_hal_cfg)}, /*Abocom - Abocom*/

I also tried this ...

# modprobe rtl8192cu
# ifconfig wlan1 up     # hangs here!

usbcore: registered new interface driver rtl8192cu
rtl8192cu:_rtl92cu_init_power_on():<0-0> Failed to polling
REG_APS_FSMCO[APFM_ONMAC] done!
rtl8192cu:_rtl92cu_init_mac():<0-0> Failed to init power on!
rtl8192cu:rtl92cu_hw_init():<0-0> init mac failed!

The device is really nice and small, and would really like to make it work.

Thanks,
Jeff
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