On Mon, 2010-06-21 at 13:37 -0700, Luis R. Rodriguez wrote: > On Mon, Jun 21, 2010 at 1:16 PM, Maxim Levitsky <maximlevitsky@xxxxxxxxx> wrote: > > Luis, let me explain again, exactly the situation: > > > > First of all AR5001 and AR5001X devices (former was usualy listed as > > AR2425, and I have it, later I don't know about much), don't work well > > with ASPM L0s enabled. > > Thanks for the clarification. David, do you see this as well on your end? > > > I told that many times, but I tell again. > > As soon as card it put on medium to high transmit load > > (for example even if transmission consists mostly of TCP ACK packets), > > it dies. > > > > Usualy it will stop transmitting, and then after few seconds it will > > send RXORN intrrupt to the host, even though the channel was idle. > > (Tested by sending a stream of UDP packets on channel that is neighbor > > free). > > > > I didn't see it, but some users reported seeing jumbo frames at this > > time as well. > > Overall it doesn't matter because card just goes south. > > > > A reset sometimes brings card to life, sometimes causes another storm of > > RXORN and sometimes just results in quiet dead card. > > A next reset might bring it to life, or not. > > > > Card (at least mine) advertises its as a 'pre pci 1.1 device'. > > Therefore if I enable CONFIG_PCIEASPM, the pci core will automaticly > > disable ASPM (both L0s and L1) on this card. > > I won't be surprised that windows does the same. > > I am not sure when L0s was enabled as per the spec as mandatory, I > thought it was optional. Interesting to hear this behavior on Linux > with CONFIG_PCIEASPM. That Kconfig description and code really need > some spit shining. > > > Therefore the patch I sent it useless because it only works when > > CONFIG_PCIEASPM is enabled. > > How so ? Your patch disables L0s, I can use ASPM with L0s and L1 with > or without CONFIG_PCIEASPM. If I added your calls to ath9k I would > disable L0s. Because due to card advertisement, CONFIG_PCIEASPM already disables L0s and L1 on the card, therefore my patch does nothing. Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
