linux-kernel - [tip:x86/urgent] x86: Make Dell Latitude E5420 use reboot=pci

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Message-ID: <tip-b7798d28ec15d20fd34b70fa57eb13f0cf6d1ecd@git.kernel.org>
Date:	Thu, 21 Jul 2011 18:48:54 GMT
From:	tip-bot for Daniel J Blueman <daniel.blueman@...il.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	stable@...nel.org, daniel.blueman@...il.com, tglx@...utronix.de
Subject: [tip:x86/urgent] x86: Make Dell Latitude E5420 use reboot=pci

Commit-ID:  b7798d28ec15d20fd34b70fa57eb13f0cf6d1ecd
Gitweb:     http://git.kernel.org/tip/b7798d28ec15d20fd34b70fa57eb13f0cf6d1ecd
Author:     Daniel J Blueman <daniel.blueman@...il.com>
AuthorDate: Fri, 13 May 2011 09:04:59 +0800
Committer:  H. Peter Anvin <hpa@...or.com>
CommitDate: Thu, 21 Jul 2011 11:45:49 -0700

x86: Make Dell Latitude E5420 use reboot=pci

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>
Cc: <stable@...nel.org>

---
 arch/x86/kernel/reboot.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 14eed21..3dfd38f 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -427,6 +427,14 @@ static struct dmi_system_id __initdata pci_reboot_dmi_table[] = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "Latitude E6320"),
 		},
 	},
+	{	/* 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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