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Re: ath9k: freeze when putting interface up

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On Sun, Sep 5, 2010 at 12:49 PM, Bjørnar Hansen <tilbjornar@xxxxxxxxx> wrote:
> Hi again,
>
> I managed to use git bisect to pinpoint the exact commit that causes
> my laptop to freeze:
>
> 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f is the first bad commit
> commit 53bc7aa08b48e5cd745f986731cc7dc24eef2a9f
> Author: Vivek Natarajan <vnatarajan@xxxxxxxxxxx>
> 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@xxxxxxxxxxx>
>    Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx>
>
>
> I'm CC'ing this to Vivek also.
> The chipset is reported as AR9285 rev 01. by lspci (I previously
> stated it was rev 2, this is wrong).
>
> While bisecting I found a reliable way to reproduce the freeze. I
> devised a script to continuously bring the interface up and down:
>
> COUNTER=1
> while(true); do
>    sudo ifconfig wlan0 up &&
>    sudo ifconfig wlan0 down &&
>    echo $COUNTER &&
>    let COUNTER=COUNTER+1
> done
>
> On stable kernels I let it run to around 150. On unstable kernels it
> reached at most 8.

Some attention to this would be appreciated.

  Luis
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