isl3886usb firmware version is wrong for karmic kernels

Binary package hint: linux-firmware

Just as the title says...

/lib/firmware/isl3886usb is the wrong version for karmic (which currently uses kernel 2.6.31).

As mentioned on: http://linuxwireless.org/en/users/Drivers/p54#firmware

Under the section:
> for 2.6.29 kernels and above: <

USB 1st generation (ISL3886 + net2280)
Required filename: isl3886usb (OK)
Recommended Image: http://daemonizer.de/prism54/prism54-fw/fw-usb/2.13.1.0.arm.0

Notice the recommended image filename mentioned above, specifically the firmware version 2.13.1.0

However... I plugged in my DLink DWL-G120 USB Wifi Adapter, which uses the isl3886 chipset according to this page:
http://linuxwireless.org/en/users/Drivers/p54/devices

root@dcptc:~# lsusb
Bus 001 Device 004: ID 2001:3701 D-Link Corp. [hex] DWL-G120 Spinnaker 802.11b

And dmesg shows:
-----------------------
Sep 27 08:05:18 dcptc kernel: [ 2487.420100] usb 1-1: new full speed USB device using uhci_hcd and address 4
Sep 27 08:05:18 dcptc kernel: [ 2487.569417] usb 1-1: configuration #1 chosen from 1 choice
Sep 27 08:05:25 dcptc kernel: [ 2488.292990] cfg80211: Calling CRDA to update world regulatory domain
Sep 27 08:05:25 dcptc kernel: [ 2492.088761] usb 1-1: firmware: requesting isl3886usb
Sep 27 08:05:25 dcptc kernel: [ 2493.454260] phy0: p54 detected a LM86 firmware
Sep 27 08:05:25 dcptc kernel: [ 2493.454277] p54: rx_mtu reduced from 3240 to 2392
Sep 27 08:05:25 dcptc kernel: [ 2493.454289] phy0: FW rev 2.13.24.0 - Softmac protocol 5.9
Sep 27 08:05:25 dcptc kernel: [ 2493.454301] phy0: cryptographic accelerator WEP:YES, TKIP:YES, CCMP:YES
Sep 27 08:05:25 dcptc kernel: [ 2494.696435] cfg80211: World regulatory domain updated:
Sep 27 08:05:27 dcptc kernel: [ 2494.696454] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Sep 27 08:05:27 dcptc kernel: [ 2494.696471] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:05:27 dcptc kernel: [ 2494.696485] (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:05:27 dcptc kernel: [ 2494.696499] (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:05:27 dcptc kernel: [ 2494.696513] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:05:27 dcptc kernel: [ 2494.696527] (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:05:27 dcptc kernel: [ 2496.593635] p54usb: probe of 1-1:1.0 failed with error -110

Probe failed, because when isl3886usb firmware was requested, FW rev 2.13.24.0 was loaded, which is wrong version. See link above: recommended version for 2.6.29 and newer kernels for isl3886 USB is 2.13.1.0.arm.0

Solution:
-----------
1. Renamed "isl3886usb" in "/lib/firmware" to "isl3886usb.bak"

2. Downloaded:
http://daemonizer.de/prism54/prism54-fw/fw-usb/2.13.1.0.arm.0
in "/lib/firmware" and renamed it to "isl3886usb"

Now I have:
root@dcptc:/lib/firmware# ls -l isl3886usb*
-rw-r--r-- 1 jas jas 29500 2009-09-27 08:51 isl3886usb
-rw-r--r-- 1 root root 30047 2009-09-16 21:47 isl3886usb.bak

3. Reloaded modules using `rmmod p54usb p54common` & `modprobe p54usb`, respectively

Now dmesg shows:
------------------------
Sep 27 08:52:58 dcptc kernel: [ 5127.682116] usbcore: registered new interface driver p54usb
Sep 27 08:52:58 dcptc kernel: [ 5226.849965] usbcore: deregistering interface driver p54usb
Sep 27 08:52:58 dcptc kernel: [ 5348.448756] cfg80211: Calling CRDA to update world regulatory domain
Sep 27 08:52:58 dcptc kernel: [ 5348.553985] cfg80211: World regulatory domain updated:
Sep 27 08:52:58 dcptc kernel: [ 5348.554006] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
Sep 27 08:52:58 dcptc kernel: [ 5348.554022] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:52:59 dcptc kernel: [ 5348.554036] (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:52:59 dcptc kernel: [ 5348.554050] (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:52:59 dcptc kernel: [ 5348.554064] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:52:59 dcptc kernel: [ 5348.554078] (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
Sep 27 08:52:59 dcptc kernel: [ 5348.638467] usb 1-1: firmware: requesting isl3886usb
Sep 27 08:52:59 dcptc kernel: [ 5348.655667] phy0: p54 detected a LM86 firmware
Sep 27 08:52:59 dcptc kernel: [ 5348.655685] p54: rx_mtu reduced from 3240 to 2392
Sep 27 08:53:02 dcptc kernel: [ 5348.655697] phy0: FW rev 2.13.1.0 - Softmac protocol 5.5 <---------
Sep 27 08:53:02 dcptc kernel: [ 5348.655709] phy0: cryptographic accelerator WEP:YES, TKIP:YES, CCMP:YES
Sep 27 08:53:02 dcptc kernel: [ 5351.319999] phy0: hwaddr 00:13:46:xx:xx:xx, MAC:isl3886 RF:Frisbee (I XX'ed out last 3 octets of MAC Address for personal reasons)
Sep 27 08:53:02 dcptc kernel: [ 5351.580361] Registered led device: p54-phy0::assoc
Sep 27 08:53:02 dcptc kernel: [ 5351.580436] Registered led device: p54-phy0::tx
Sep 27 08:53:02 dcptc kernel: [ 5351.580522] Registered led device: p54-phy0::rx
Sep 27 08:53:02 dcptc kernel: [ 5351.580598] Registered led device: p54-phy0::radio

and now that the right firmware version for my recent karmic kernel (2.6.31 > 2.6.28) is loaded, I have a wlan device showing in `ifconfig -a` ... yaaaay! :)

On a sidenote, I believe bug #401531 is very similar to the issue I report here, but without the juicy details, so I will mark it as a duplicate of this bug

Bug #339548 is also be closely related to same cause (wrong firmware file version), although it is a different chipset (isl3890) but also covered in same page I mentioned above. Again: http://linuxwireless.org/en/users/Drivers/p54#firmware

I think the isl* files in /lib/firmware all need to be checked against those listed in the aforementioned page, to make sure they are the right versions for recent karmic kernels (2.6.31 > 2.6.29) to work properly...

--Jas