linux-kernel - Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

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Date:	Tue, 26 May 2009 14:43:11 +0200
From:	Alejandro Riveira Fernández 
	<alejandro.riveira@...il.com>
To:	Ivo van Doorn <ivdoorn@...il.com>
Cc:	linux-wireless <linux-wireless@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linville@...driver.com, Greg KH <greg@...ah.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [2.6.27-rc7 vs 2.6.29 Regresion] Wifi Network Slownes rt2500pci

El mar, 26-05-2009 a las 12:35 +0200, Ivo van Doorn escribió:

> > What causes the regression then?
> 
> No idea. Apparently the invalid bitmask is accepted by the device under
> certain conditions. Which would be very odd.... But since dozens
> of people reported this problem for 2.6.27 as well, it probably depends
> heavily on the actual chipset revision or configuration.
> 
> > Anyway For the script to work what config options do I need? debugfs?
> > Anything else ?
> 
> CONFIG_DEBUGFS
> CONFIG_MAC80211_DEBUGFS
> CONFIG_RT2X00_LIB_DEBUGFS
> 
> And thats it, make sure debugfs is mounted and just run the script.
> The script will detect mount location and rt2x00 interface.


That's what I get[1] with the good kernel but I think the script failed
because I got a very short output

$ sudo bash rt2x00_regdump.sh | xclip

kernel: 2.6.29.4-00258-ga2c0a36
driver: rt2500pci
version: 2.2.3
compiled: May 26 2009 13:05:03
dev_flags: 0x00000a2f
rt chip: 0201
rf chip: 0003
revision:00000004

csr length: 93
eeprom length: 256
bbp length: 64
rf length: 5


And nothing more...

> 
> Ivo

Alejandro

[1] Had to install gawk mawk does not have --posix. 

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