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SubjectRe: [PATCH 3.4 93/99] iwlwifi: always copy first 16 bytes of commands
Date
Original Message from: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 3.4-stable review patch. If anyone has any objections, please let me know.
>
> ------------------
>
> From: Johannes Berg <johannes.berg@intel.com>
>
> commit 8a964f44e01ad3bbc208c3e80d931ba91b9ea786 upstream.

Forwarding original message to make sure it isn't lost - this patch breaks
iwlwifi in >=3.4.83 for at least some people, including me and my Intel(R)
Centrino(R) Ultimate-N 6300 AGN, REV=0x74.

Reverting the patch so far has been a workaround. Before sending, I also tried
out 3.4.83 + current stable-queue to make sure the problem persists.


Original Message From: Andres Bertens <abertensu@yahoo.com>
Subject: Linux 3.4.83 update: wireless card (iwlwifi) stop working
Date: Wednesday 12 March 2014, 14:46:14
> Hi,
>
> I updated today to 3.4.83 kernel and my wireless card stop working (log
> says: iwlwifi 0000:03:00.0: Unable to initialize device).
>
> My laptop is a Lenovo Thinkpad X230, with an Intel 6205 AGN card.
>
> Reverting patch
> Johannes Berg <johannes.berg@intel.com>
> iwlwifi: always copy first 16 bytes of commands
> makes it work again.
>
> Regards,
> Andres Bertens
>
> Linux mintaka 3.4.83-smp #1 SMP Wed Mar 12 13:10:44 CLST 2014 x86_64
> x86_64 x86_64 GNU/Linux
>
> --------------------------------
> iwlwifi 0000:03:00.0: pci_resource_len = 0x00002000
> iwlwifi 0000:03:00.0: pci_resource_base = ffffc90006618000
> iwlwifi 0000:03:00.0: HW Revision ID = 0x34
> iwlwifi 0000:03:00.0: irq 42 for MSI/MSI-X
> iwlwifi 0000:03:00.0: loaded firmware version 18.168.6.1
> iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUG disabled
> iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEBUGFS disabled
> iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TRACING disabled
> iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_DEVICE_TESTMODE disabled
> iwlwifi 0000:03:00.0: CONFIG_IWLWIFI_P2P disabled
> iwlwifi 0000:03:00.0: Detected Intel(R) Centrino(R) Advanced-N 6205 AGN,
> REV=0xB0
> iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
> iwlwifi 0000:03:00.0: device EEPROM VER=0x715, CALIB=0x6
> iwlwifi 0000:03:00.0: Device SKU: 0x1F0
> iwlwifi 0000:03:00.0: Valid Tx ant: 0x3, Valid Rx ant: 0x3
> iwlwifi 0000:03:00.0: Tunable channels: 13 802.11bg, 24 802.11a channels
> iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
> iwlwifi 0000:03:00.0: Radio type=0x1-0x2-0x0
> iwlwifi 0000:03:00.0: Error sending CALIBRATION_CFG_CMD: time out after
> 2000ms.
> iwlwifi 0000:03:00.0: Current CMD queue read_ptr 2 write_ptr 3
> iwlwifi 0000:03:00.0: Failing on timeout while stopping DMA channel 7
> [0x077f0001]
> iwlwifi 0000:03:00.0: Failed to run INIT ucode: -110
> iwlwifi 0000:03:00.0: Unable to initialize device.
>


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