linux-kernel - [PATCH] x86: Add reboot quirk for Dell Precision M4600

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Date:	Wed, 27 Jul 2011 13:56:51 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	tglx@...utronix.de, mingo@...e.hu, hpa@...or.com
Cc:	bruno@...a-net.ch, mjg@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] x86: Add reboot quirk for Dell Precision M4600

ACPI reboot does not work for Dell Precision M4600. Detect this
machine via DMI and force the use of the PCI reboot method.
    
Reported-and-tested-by: Bruno Friedmann <bruno@...a-net.ch>
Signed-off-by: Mel Gorman <mgorman@...e.de>
---
 arch/x86/kernel/reboot.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 9242436..7ca2ec4 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -443,6 +443,15 @@ static struct dmi_system_id __initdata pci_reboot_dmi_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6420"),
 		},
 	},
+	{	/* Handle problems with rebooting on Dell Precision M4600's */
+		.callback = set_pci_reboot,
+		.ident = "Dell Precision M4600",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Precision M4600"),
+		},
+	},
+
 	{ }
 };
 
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