linux-kernel - [PATCH 3.2 160/221] x86/reboot: Remove VersaLogic Menlow reboot quirk

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Date:	Tue, 05 May 2015 02:16:39 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:	akpm@...ux-foundation.org,
	"Michael D Labriola" <michael.d.labriola@...il.com>,
	"Ingo Molnar" <mingo@...e.hu>,
	"Michael D Labriola" <mlabriol@...b.com>,
	"Matthew Garrett" <mjg@...hat.com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Kushal Koolwal" <kushalkoolwal@...il.com>
Subject: [PATCH 3.2 160/221] x86/reboot: Remove VersaLogic Menlow reboot quirk

3.2.69-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Michael D Labriola <michael.d.labriola@...il.com>

commit e6d36a653becc7bbc643c399a77882e02bf552cb upstream.

This commit removes the reboot quirk originally added by commit
e19e074 ("x86: Fix reboot problem on VersaLogic Menlow boards").

Testing with a VersaLogic Ocelot (VL-EPMs-21a rev 1.00 w/ BIOS
6.5.102) revealed the following regarding the reboot hang
problem:

- v2.6.37 reboot=bios was needed.

- v2.6.38-rc1: behavior changed, reboot=acpi is needed,
  reboot=kbd and reboot=bios results in system hang.

- v2.6.38: VersaLogic patch (e19e074 "x86: Fix reboot problem on
  VersaLogic Menlow boards") was applied prior to v2.6.38-rc7.  This
  patch sets a quirk for VersaLogic Menlow boards that forces the use
  of reboot=bios, which doesn't work anymore.

- v3.2: It seems that commit 660e34c ("x86: Reorder reboot method
  preferences") changed the default reboot method to acpi prior to
  v3.0-rc1, which means the default behavior is appropriate for the
  Ocelot.  No VersaLogic quirk is required.

The Ocelot board used for testing can successfully reboot w/out
having to pass any reboot= arguments for all 3 current versions
of the BIOS.

Signed-off-by: Michael D Labriola <michael.d.labriola@...il.com>
Cc: Matthew Garrett <mjg@...hat.com>
Cc: Michael D Labriola <mlabriol@...b.com>
Cc: Kushal Koolwal <kushalkoolwal@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Link: http://lkml.kernel.org/r/87vcnub9hu.fsf@gmail.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 arch/x86/kernel/reboot.c | 8 --------
 1 file changed, 8 deletions(-)

--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -295,14 +295,6 @@ static struct dmi_system_id __initdata r
 			DMI_MATCH(DMI_BOARD_NAME, "P4S800"),
 		},
 	},
-	{	/* Handle problems with rebooting on VersaLogic Menlow boards */
-		.callback = set_bios_reboot,
-		.ident = "VersaLogic Menlow based board",
-		.matches = {
-			DMI_MATCH(DMI_BOARD_VENDOR, "VersaLogic Corporation"),
-			DMI_MATCH(DMI_BOARD_NAME, "VersaLogic Menlow board"),
-		},
-	},
 	{ /* Handle reboot issue on Acer Aspire one */
 		.callback = set_kbd_reboot,
 		.ident = "Acer Aspire One A110",

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