linux-kernel - [PATCH 0/4]: Resolve MSI vs. INTX

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Message-Id: <20071023.195108.69018458.davem@davemloft.net>
Date:	Tue, 23 Oct 2007 19:51:08 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	linux-kernel@...r.kernel.org
Cc:	jeff@...zik.org, barkalow@...ervon.org, linas@...tin.ibm.com,
	chunhao.huang@...mail.com, gregkh@...e.de, htejun@...il.com,
	brice.goglin@...il.com, david.gaarenstroom@...il.com,
	linux-pci@...ey.karlin.mff.cuni.cz, shane.huang@....com,
	linux-ide@...r.kernel.org, brice@...i.com, mchan@...adcom.com
Subject: [PATCH 0/4]: Resolve MSI vs. INTX_DISABLE quirks.

The forthcoming patches are also available from:

	kernel.org:/pub/scm/linux/kernel/git/davem/msiquirk-2.6.git

and clean up the handling of the common quirk wherein setting
INTX_DISABLE will mistakedly disable MSI generation for some
devices.

For devices without that problem, we want to keep the pci_intx() calls
in drivers/pci/msi.c because those help protect against devices
with the opposite problem.  Such devices always generate INTX
interrupts even when MSI is enabled, unless INTX_DISABLE is set.

Michael, please pay special attention to patch #3.  I think I
picked the correct PCI device IDs to match for the quirk
(5714* and 5780*) but it's possible we might need more elaborate
checks here.  It at least worked properly for the chips in my
Niagara system.

In addition to the Tigon3 cases, I added quirk entries for the
SB700/800 SATA chips and the IXP SB400 USB controllers.

Signed-off-by: David S. Miller <davem@...emloft.net>
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