RE: [ipw3945-devel] iwl3945 dies on module reload

Cahill, Ben M
2009-11-23T23:24:11Z

>-----Original Message-----
>From: Maxim Levitsky [mailto:maximlevitsky@gmail.com]
>Sent: Monday, November 23, 2009 12:16 PM
>To: Johannes Berg
>Cc: linux-wireless; iwlwifi maling list
>Subject: [ipw3945-devel] iwl3945 dies on module reload
>
>When reloading the iwl3945 driver I often get this:
>
>
>[ 830.333386] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG
>Network Connection driver for Linux, 1.2.26kds
>[ 830.333407] iwl3945: Copyright(c) 2003-2009 Intel Corporation
>[ 830.333536] iwl3945 0000:06:00.0: PCI INT A -> GSI 19
>(level, low) -> IRQ 19
>[ 830.374979] iwl3945 0000:06:00.0: Tunable channels: 13
>802.11bg, 0 802.11a channels
>[ 830.374995] iwl3945 0000:06:00.0: Detected Intel Wireless
>WiFi Link 3945BG
>[ 830.375163] iwl3945 0000:06:00.0: irq 32 for MSI/MSI-X
>[ 830.376859] phy0: Selected rate control algorithm 'iwl-3945-rs'
>[ 830.427214] iwl3945 0000:06:00.0: firmware: requesting
>iwlwifi-3945-2.ucode
>[ 830.526945] iwl3945 0000:06:00.0: loaded firmware version 15.32.2.9
>[ 830.544236] CE: hpet increasing min_delta_ns to 15000 nsec
>[ 830.575694] iwl3945 0000:06:00.0: BSM uCode verification
>failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
>[ 830.578862] iwl3945 0000:06:00.0: Hardware error detected.
>Restarting.
>[ 832.570133] iwl3945 0000:06:00.0: Wait for START_ALIVE
>timeout after 2000ms.
>[ 832.622676] iwl3945 0000:06:00.0: BSM uCode verification
>failed at addr 0x00003800+0 (of 900), is 0xa5a5a5a2, s/b 0xf802020
>[ 832.625839] iwl3945 0000:06:00.0: Hardware error detected.
>Restarting.
>[ 834.620132] iwl3945 0000:06:00.0: Wait for START_ALIVE
>timeout after 2000ms.

The 0xa5a5a5a2 signature indicates that the device is powered up and the PCI Express link is working, but somehow the device internals have not been powered up / initialized.

Are you using a very recent version of the driver? I've done some work in this area in the past couple of months.

-- Ben --

>
>
>Note that I used antenna=2 parameter to experiment with
>quality of reception of both antennas
>(this feature strangely works just fine....)
>
>I disabled this option, so next time I feel like rebooting my
>system, I see if this option was the cause.
>(unlikely)
>
>
>Best regards,
> Maxim Levitsky
>
>
>
>
>
>
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