linux-kernel - [ 107/123] PCI: Work around Stratus ftServer broken PCIe hierarchy (fix DMI check)

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Message-Id: <20130109201512.206422838@linuxfoundation.org>
Date:	Wed,  9 Jan 2013 12:35:46 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Fadeeva Marina <astarta@....ru>,
	Myron Stowe <myron.stowe@...hat.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>
Subject: [ 107/123] PCI: Work around Stratus ftServer broken PCIe hierarchy (fix DMI check)

3.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Myron Stowe <myron.stowe@...hat.com>

commit 1278998f8ff6d66044ed00b581bbf14aacaba215 upstream.

Commit 284f5f9 was intended to disable the "only_one_child()" optimization
on Stratus ftServer systems, but its DMI check is wrong.  It looks for
DMI_SYS_VENDOR that contains "ftServer", when it should look for
DMI_SYS_VENDOR containing "Stratus" and DMI_PRODUCT_NAME containing
"ftServer".

Tested on Stratus ftServer 6400.

Reported-by: Fadeeva Marina <astarta@....ru>
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=51331
Signed-off-by: Myron Stowe <myron.stowe@...hat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/x86/pci/common.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/arch/x86/pci/common.c
+++ b/arch/x86/pci/common.c
@@ -433,7 +433,8 @@ static const struct dmi_system_id __devi
 		.callback = set_scan_all,
 		.ident = "Stratus/NEC ftServer",
 		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "ftServer"),
+			DMI_MATCH(DMI_SYS_VENDOR, "Stratus"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ftServer"),
 		},
 	},
 	{}


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