Re: ath9k causes lockups since kernel 2.6.35

[Jonathan Nieder <jrnieder@gmail.com>]

(just cc-ing some people listed in MAINTAINERS)
Hi,

Tony Houghton wrote:

> With 2.6.37 I can not use suspend on my Compaq/HP 311c (Intel Atom
> N270/NVidia Ion LE). Originally the machine just kept locking up without
> even blanking the display when I tried to suspend (using the GNOME menu
> or by shutting the lid). I upgraded upower and gnome-power-manager etc
> to experimental and after that the machine suspended OK but could not
> resume. The backlight came on but the screen stayed blank and I could
> not get to a console or anything with Alt+Fn.
[...]
> I tried replacing network-manager with wicd but that crashed the system
> when it connected instead of when disconnected.
[...]
> While testing different kernels I found it would crash at different
> times, usually before the screen turned off for suspending, but
> sometimes it would crash on resuming and occasionally it locked up while
> booting, but it's always a complete lock-up ie the keyboard is
> completely responsive, including caps lock, the mouse won't move if the
> display is still on, and the only way out is to hold down the power
> button.
[...]
> I haven't tried looking in logs because the crashes are so severe I
> don't think they'd be able to record anything useful. But using git
> bisect I think I have tracked down the change that started causing this
> problem:
>
> 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f is the first bad commit
> commit 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
> Author: Vivek Natarajan <vnatarajan@atheros.com>
> Date:   Mon Apr 5 14:48:04 2010 +0530
> 
>     ath9k: Add support for newer AR9285 chipsets.
>     
>     This patch adds support for a modified newer version of AR9285
>     chipsets.
>     
>     Signed-off-by: Vivek Natarajan <vnatarajan@atheros.com>
>     Signed-off-by: John W. Linville <linville@tuxdriver.com>

The adaptor is an AR9285[1].

That commit is based against v2.6.33 and was merged in v2.6.35-rc1

$ git describe 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
v2.6.33-3523-g53bc7aa
$ git name-rev --tags 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
53bc7aa08b48e5cd745f986731cc7dc24eef2a9f tags/v2.6.35-rc1~473^2~167^2~346

Any ideas for tracking this down?

Thanks,
Jonathan

[1]
> 84: udi = '/org/freedesktop/Hal/devices/pci_168c_2b'
>   pci.device_protocol = 0  (0x0)  (int)
>   pci.vendor = 'Atheros Communications Inc.'  (string)
>   info.vendor = 'Atheros Communications Inc.'  (string)
>   pci.product = 'AR9285 Wireless Network Adapter
> (PCI-Express)'  (string) linux.sysfs_path =
> '/sys/devices/pci0000:00/0000:00:15.0/0000:03:00.0'  (strin g)
>   info.parent = '/org/freedesktop/Hal/devices/pci_10de_ac6'  (string)
>   info.linux.driver = 'ath9k'  (string)
>   pci.subsys_vendor = 'Hewlett-Packard Company'  (string)
>   linux.hotplug_type = 2  (0x2)  (int)
>   linux.subsystem = 'pci'  (string)
>   info.subsystem = 'pci'  (string)
>   info.product = 'AR9285 Wireless Network Adapter
> (PCI-Express)'  (string) info.udi =
> '/org/freedesktop/Hal/devices/pci_168c_2b'  (string)
> pci.linux.sysfs_path =
> '/sys/devices/pci0000:00/0000:00:15.0/0000:03:00.0'  (string)
> pci.product_id = 43  (0x2b)  (int) pci.vendor_id = 5772  (0x168c)
> (int) pci.subsys_product_id = 12352  (0x3040)  (int)
> pci.subsys_vendor_id = 4156  (0x103c)  (int) pci.device_class = 2
> (0x2)  (int) pci.device_subclass = 128  (0x80)  (int)