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Date: Tue, 7 Jan 2003 20:27:55 +0300
From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Grant Grundler <grundler@cup.hp.com>,
       Linus Torvalds <torvalds@transmeta.com>,
       Paul Mackerras <paulus@samba.org>,
       Benjamin Herrenschmidt <benh@kernel.crashing.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>, davidm@hpl.hp.com,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [patch 2.5] PCI: allow alternative methods for probing the BARs
Message-ID: <20030107202755.E559@localhost.park.msu.ru>
References: <20030106215210.GE26790@cup.hp.com> <Pine.LNX.4.44.0301061515530.10086-100000@home.transmeta.com> <20030107001332.GJ26790@cup.hp.com> <1041942820.20658.2.camel@irongate.swansea.linux.org.uk>
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In-Reply-To: <1041942820.20658.2.camel@irongate.swansea.linux.org.uk>; from alan@lxorguk.ukuu.org.uk on Tue, Jan 07, 2003 at 12:33:41PM +0000
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On Tue, Jan 07, 2003 at 12:33:41PM +0000, Alan Cox wrote:
> > Did you expect the PCI_COMMAND_MASTER disabled in the USB Controller
> > or something else in the controller turned off?
> 
> There is another problem too. Some devices ignore the master bit disable.
> VIA 8233/8235 being a fine example.

I don't think IDE DMA is active at that point. But in either case,
with the 2-pass approach we should be able to handle 100% of
problematic hardware.

Ivan.
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