Re: Re2: What does it mean: wifi1: ath_reset: unable to reset hardware: '' (HAL status 0)

On Mon, 2010-02-15 at 23:10 +0100, Jaroslav Fojtik wrote:
> Dear Pavel Roskin & madwifi users,
> 
> > > What does it mean:
> > > wifi1: rx FIFO overrun; resetting
> > > wifi1: ath_reset: unable to reset hardware: '' (HAL status 0)
> > 
> > It means that ath_hw_reset() failed and the status code was 0.
> > 
> > If you try madwifi trunk, you should be able to trace the failure to the
> > HAL code and see which condition causes it.
> Thank you for a hint. I was interested in how severe is this problem.

Since HAL doesn't return an error status, I don't think it's possible to
make any conclusion.  It looks like a bug in HAL, as it should return an
error status if a call to HAL fails.

You could make some conclusions if you find whether and when the open
source HAL does the same thing.

> After this problem madwifi still works, but "iwlist ath0 scanning" stops
> working.

Then it's serious, as it has a lasting effect.

> Unfortuantelly I cannot use "madwifi trunk" because it is simply crashing
> approximatelly 3 times per day. I have tested this on 2 different computers.
> I am sure that this problem could be reproducible. 

If you can reproduce "HAL status 0" faster than that, then it shouldn't
be a problem.

> You gave me a hint to scrutinize callibration. But unfortunatelly I was 
> unable to find any correspondency between autocalibration period and wifi 
> crash.
> 
>   I did not test latest trunk so it could be alteady fixed. If anybody 
> is interested in my results, I could test this once more.

You may want to open a ticket in the Madwifi trac for that problem.  At
least it would be easier to refer to the problem in the future.

-- 
Regards,
Pavel Roskin

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