LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Roland Dreier <rdreier@cisco.com>
To: Petr Vandrovec <petr@vandrovec.name>
Cc: jeff@garzik.org, linux-kernel@vger.kernel.org, akpm@osdl.org
Subject: Re: [PATCH] Unbreak MSI on ATI devices
Date: Thu, 04 Jan 2007 13:59:37 -0800	[thread overview]
Message-ID: <ada4pr61mie.fsf@cisco.com> (raw)
In-Reply-To: <20061221075540.GA21152@vana.vc.cvut.cz> (Petr Vandrovec's message of "Thu, 21 Dec 2006 08:55:40 +0100")

 > So my question is - what is real reason for disabling INTX when in MSI mode?
 > According to PCI spec it should not be needed, and it hurts at least chips
 > listed below:
 > 
 > 00:13.0 0c03: 1002:4374 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
 > 00:13.1 0c03: 1002:4375 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller
 > 00:13.2 0c03: 1002:4373 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller 

heh... I'm not gloating or anything... but I am glad that some ASIC
designer was careless enough to prove me right when I said going
beyond what the PCI spec requires is dangerous.

 - R.

  parent reply	other threads:[~2007-01-04 21:59 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-12-21  7:55 Petr Vandrovec
2006-12-21  8:21 ` Jeff Garzik
2006-12-25  4:01 ` Daniel Barkalow
2007-01-04 21:59 ` Roland Dreier [this message]
2007-01-05  9:07   ` Petr Vandrovec
2007-01-06  0:54     ` Daniel Barkalow
2007-01-05 23:57   ` Daniel Barkalow
     [not found] <fa.yZrxrHh1AWLcv/+D2xYZ1VhVYb8@ifi.uio.no>
2006-12-21 14:36 ` Robert Hancock

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=ada4pr61mie.fsf@cisco.com \
    --to=rdreier@cisco.com \
    --cc=akpm@osdl.org \
    --cc=jeff@garzik.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=petr@vandrovec.name \
    --subject='Re: [PATCH] Unbreak MSI on ATI devices' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).