linux-kernel - [PATCH 31/91] x86: Make Dell Latitude E5420 use reboot=pci

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Date:	Sun, 05 Feb 2012 23:10:20 +0100
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Daniel J Blueman <daniel.blueman@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Greg KH <gregkh@...uxfoundation.org>
Subject: [PATCH 31/91] x86: Make Dell Latitude E5420 use reboot=pci

2.6.27-longterm review patch.  If anyone has any objections, please let us know.

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

commit b7798d28ec15d20fd34b70fa57eb13f0cf6d1ecd upstream.

Rebooting on the Dell E5420 often hangs with the keyboard or ACPI
methods, but is reliable via the PCI method.

[ hpa: this was deferred because we believed for a long time that the
  recent reshuffling of the boot priorities in commit
  660e34cebf0a11d54f2d5dd8838607452355f321 fixed this platform.
  Unfortunately that turned out to be incorrect. ]

Signed-off-by: Daniel J Blueman <daniel.blueman@...il.com>
Link: http://lkml.kernel.org/r/1305248699-2347-1-git-send-email-daniel.blueman@gmail.com
Signed-off-by: H. Peter Anvin <hpa@...or.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 arch/x86/kernel/reboot.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

Index: longterm-2.6.27/arch/x86/kernel/reboot.c
===================================================================
--- longterm-2.6.27.orig/arch/x86/kernel/reboot.c	2012-02-05 22:34:34.087914934 +0100
+++ longterm-2.6.27/arch/x86/kernel/reboot.c	2012-02-05 22:34:39.265915394 +0100
@@ -227,6 +227,14 @@
 			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),
 		},
 	},
+	{	/* Handle problems with rebooting on the Latitude E5420. */
+		.callback = set_pci_reboot,
+		.ident = "Dell Latitude E5420",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E5420"),
+		},
+	},
 	{ }
 };
 


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