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From: "Randy.Dunlap" <rddunlap-3NddpPZAyC0@public.gmane.org>
To: Michael Guntsche <mike-Z92qn3yYq0hWk0Htik3J/w@public.gmane.org>
Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	Diego.SantaCruz-p8DiymsW2f8@public.gmane.org
Subject: Re: Processor C states and USB problem
Date: Fri, 9 Jan 2004 09:35:53 -0800	[thread overview]
Message-ID: <20040109093553.31aa1c79.rddunlap@osdl.org> (raw)
In-Reply-To: <20040109165421.6fc2483a.mike-Z92qn3yYq0hWk0Htik3J/w@public.gmane.org>

On Fri, 9 Jan 2004 16:54:21 +0100 Michael Guntsche <mike-Z92qn3yYq0hWk0Htik3J/w@public.gmane.org> wrote:

| On Fri, 09 Jan 2004 11:15:22 +0100
| Diego SANTA CRUZ <Diego.SantaCruz-p8DiymsW2f8@public.gmane.org> wrote:
| 
| > On Fri, 2004-01-09 at 11:05, Petr Olivka wrote:
| > > in 2.4 kernel I have to unload all usb modules. Then power drop to C3
| > > state. If I remember, only usbcore can be loaded (on my D600).
| > > 
| > 
| > But even booting with init=/bin/sh and without ever loading any USB
| > module I get permanent bus mastering activity. Any ideas?
| 
| I see the same on my notebook with a 2.4 kernel. Sometimes it works, but most of the time
| there is Bus master acitivty.
| With 2.6 I only see that if I have a USB device plugged in (mouse) that gets polled.

It seems like one of the early usb uhci host controller drivers (HCDs)
generated lots of bus master activity.  Are you sure that uhci or
usb-uhci is not loaded (in the 2.4 problem case), even though no
USB device drivers are loaded?

--
~Randy
MOTD:  Always include version info.


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  parent reply	other threads:[~2004-01-09 17:35 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-05  9:06 Processor C states and USB problem Li, Shaohua
     [not found] ` <571ACEFD467F7749BC50E0A98C17CDD8E84E6C-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-05  9:57   ` mike-Z92qn3yYq0hWk0Htik3J/w
2004-01-09  9:31   ` Diego SANTA CRUZ
     [not found]     ` <1073640699.10144.14.camel-TVkb0Wta32GnwOLKaxbZ/w@public.gmane.org>
2004-01-09 10:05       ` Petr Olivka
     [not found]         ` <Pine.LNX.4.58.0401091102120.20682-Rd/Vp7eeBLeOZheNW5JDhQ@public.gmane.org>
2004-01-09 10:15           ` Diego SANTA CRUZ
     [not found]             ` <1073643322.10144.23.camel-TVkb0Wta32GnwOLKaxbZ/w@public.gmane.org>
2004-01-09 15:54               ` Michael Guntsche
     [not found]                 ` <20040109165421.6fc2483a.mike-Z92qn3yYq0hWk0Htik3J/w@public.gmane.org>
2004-01-09 17:35                   ` Randy.Dunlap [this message]
     [not found]                     ` <20040109093553.31aa1c79.rddunlap-3NddpPZAyC0@public.gmane.org>
2004-01-09 18:24                       ` Michael Guntsche
  -- strict thread matches above, loose matches on Subject: below --
2004-01-19 10:15 Ow Mun Heng
2004-01-18  5:57 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F8401720CEB-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-18 10:00   ` Michael Guntsche
2004-01-18  3:17 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F8401720CE2-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-19 10:20   ` Diego SANTA CRUZ
2004-01-20 19:51   ` Nate Lawson
2004-01-14  2:10 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F8401720CC9-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-14  7:55   ` Diego SANTA CRUZ
     [not found]     ` <1074066934.9124.6.camel-TVkb0Wta32GnwOLKaxbZ/w@public.gmane.org>
2004-01-14 15:34       ` Michael Guntsche
     [not found]         ` <20040114163437.4bcbc62f.mike-Z92qn3yYq0hWk0Htik3J/w@public.gmane.org>
2004-01-15  8:06           ` Diego SANTA CRUZ
2004-01-12  8:31 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F8401720CB9-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-12 10:50   ` Diego SANTA CRUZ
2004-01-07  9:08 Yu, Luming
2004-01-06  1:27 Yu, Luming
     [not found] ` <3ACA40606221794F80A5670F0AF15F8401720C79-SRlDPOYGfgogGBtAFL8yw7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2004-01-06 18:37   ` Nate Lawson
2004-01-05  8:41 mike-Z92qn3yYq0hWk0Htik3J/w
     [not found] ` <E1AdQIo-0005nI-00-bi+AKbBUZKZeoWH0uzbU5w@public.gmane.org>
2004-01-05  9:11   ` Petr Olivka

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