Problem with ath5k driver since kernel 2.6.31-18-generic

[j-yves]

Description of problem:
After update to kernel 2.6.31-18-generic my WLAN card does not work any
more. It works if I boot with kernel 2.6.31-17-generic

Version-Release:
Ubuntu 9.10

How reproducible:
Always

Steps to Reproduce:
1. Boot with kernel 2.6.31-18-generic

Actual results:
WLAN does not work. syslog displays:

Jan 10 14:05:15 gilgamesh kernel: [ 49.265670] ath5k 0000:06:04.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
Jan 10 14:05:15 gilgamesh kernel: [ 49.265725] ath5k 0000:06:04.0: registered as 'phy0'
Jan 10 14:05:15 gilgamesh kernel: [ 49.750923] ath5k phy0: Invalid EEPROM checksum 0xbdc0
Jan 10 14:05:15 gilgamesh kernel: [ 49.750927] ath5k phy0: unable to init EEPROM
Jan 10 14:05:15 gilgamesh kernel: [ 49.750946] ath5k 0000:06:04.0: PCI INT A disabled
Jan 10 14:05:16 gilgamesh kernel: [ 50.471406] ath5k: probe of 0000:06:04.0 failed with error -5

Expected results:
WLAN should work. When I boot with kernel 2.6.31.6-145.fc12.i686 dmesg shows:

Jan 10 14:07:13 gilgamesh NetworkManager: <info> (wlan0): new 802.11 WiFi device (driver: 'ath5k')
Jan 10 14:07:13 gilgamesh kernel: [ 42.537730] ath5k 0000:06:04.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
Jan 10 14:07:13 gilgamesh kernel: [ 42.537776] ath5k 0000:06:04.0: registered as 'phy0'
Jan 10 14:07:13 gilgamesh kernel: [ 42.896565] ath5k phy0: Atheros AR2414 chip found (MAC: 0x79, PHY: 0x45)

Additional info:
lspci -v displays

06:04.0 Ethernet controller: Atheros Communications Inc. Atheros AR5001X+ Wireless Network Adapter (rev 01)
 Subsystem: AMBIT Microsystem Corp. Device 0406
 Flags: bus master, medium devsel, latency 168, IRQ 22
 Memory at b0100000 (32-bit, non-prefetchable) [size=64K]
 Capabilities: [44] Power Management version 2
 Kernel driver in use: ath5k
 Kernel modules: ath5k

[j-yves (jyaulnette)]

mistake in cut/paste. First line after "Expected results:" better with:

WLAN should work. When I boot with kernel 2.6.31-17-generic syslog shows:

[323232 (323232)]

Confirmed
Ath5k device does not show up in N etworkmanager or iwconfig
[ 304.160952] cfg80211: Calling CRDA to update world regulatory domain
[ 304.196635] cfg80211: World regulatory domain updated:
[ 304.196644] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[ 304.196648] (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 304.196651] (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 304.196654] (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[ 304.196657] (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 304.196660] (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[ 304.218243] ath5k 0000:00:09.0: PCI INT A -> Link[LNK3] -> GSI 11 (level, low) -> IRQ 11
[ 304.218347] ath5k 0000:00:09.0: registered as 'phy0'
[ 304.699218] ath5k phy0: Invalid EEPROM checksum 0x5135
[ 304.699226] ath5k phy0: unable to init EEPROM
[ 304.706913] ath5k 0000:00:09.0: PCI INT A disabled
[ 304.706946] ath5k: probe of 0000:00:09.0 failed with error -5