x86: ASUS P4S800 reboot=bios quirk

Bug reporter noted their system with an ASUS P4S800 motherboard would
hang when rebooting unless reboot=b was specified.  Their dmidecode
didn't contain descriptive System Information for Manufacturer or
Product Name, so I used their Base Board Information to create a
reboot quirk patch.  The bug reporter confirmed this patch resolves
the reboot hang.

Handle 0x0001, DMI type 1, 25 bytes
System Information
       Manufacturer: System Manufacturer
       Product Name: System Name
       Version: System Version
       Serial Number: SYS-1234567890
       UUID: E0BFCD8B-7948-D911-A953-E486B4EEB67F
       Wake-up Type: Power Switch

Handle 0x0002, DMI type 2, 8 bytes
Base Board Information
     Manufacturer: ASUSTeK Computer INC.
     Product Name: P4S800
     Version: REV 1.xx
     Serial Number: xxxxxxxxxxx

BugLink: http://bugs.launchpad.net/bugs/366682

ASUS P4S800 will hang when rebooting unless reboot=b is specified.
Add a quirk to reboot through the bios.

Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
LKML-Reference: <1259972107.4629.275.camel@emiko>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@kernel.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index f93078746e00..6caf26010970 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -259,6 +259,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "SBC-FITPC2"),
                 },
         },
+        {       /* Handle problems with rebooting on ASUS P4S800 */
+                .callback = set_bios_reboot,
+                .ident = "ASUS P4S800",
+                .matches = {
+                        DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
+                        DMI_MATCH(DMI_BOARD_NAME, "P4S800"),
+                },
+        },
         { }
 };