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Re: [PATCH] ath5k: disable ASPM

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On Fri, 2010-05-28 at 13:09 +0300, Jussi Kivilinna wrote: 
> Atheros card on Acer Aspire One (AOA150, Atheros Communications Inc. AR5001
> Wireless Network Adapter [168c:001c] (rev 01)) doesn't work well with ASPM
> enabled. With ASPM ath5k will eventually stall on heavy traffic with often
> 'unsupported jumbo' warnings appearing. Disabling ASPM L0s/L1 in ath5k fixes
> these problems.
> 
> Reproduced with pcie_aspm=force and by using 'nc < /dev/zero > /dev/null' at
> both ends (usually stalls within seconds).

This fixes the same nasty problem on my AR2425.

My AR2425 will stall if it transmits for about 1~2 minutes.

It sends storm of RXORN interrupts although it only transmits.

I see that now lspci calls it AR5001.

Jussi Kivilinna, million thanks to you. I would never think of going
this direction.

Luis, so I was right after all, wasn't I?
It is a hardware bug that is worked around in windows driver by
disabling PCIE ASPM L0S.

Jussi Kivilinna, thanks again, I really mean it.


Best regards,
Maxim Levitsky 

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