Please consider this patch. Let me know if you would like me to change
anything or if you don't agree with it. It applies cleanly to 2.6.35-rc5.
The Lenovo T400 and T500 have an annoying 9 second delay when
rebooting, unless reboot=pci is passed to the kernel command line.
This delay happens from at least kernel 2.6.20.
Make this change permanent by hardcoding the Tx00 on the
arch/kernel/reboot.c pci quirks table.
Signed-off-by: Pedro Ribeiro <ped...@gmail.com>
diff -uprN linux-2.6.35-rc5-old/arch/x86/kernel/reboot.c
linux-2.6.35-rc5/arch/x86/kernel/reboot.c
--- linux-2.6.35-rc5-old/arch/x86/kernel/reboot.c 2010-07-14
14:11:46.545272332 +0100
+++ linux-2.6.35-rc5/arch/x86/kernel/reboot.c 2010-07-14 14:14:06.943272338
+0100
@@ -477,6 +477,22 @@ static struct dmi_system_id __initdata p
DMI_MATCH(DMI_PRODUCT_NAME, "iMac9,1"),
},
},
+ { /* Solves the 9 second delay when rebooting with the T400 */
+ .callback = set_pci_reboot,
+ .ident = "Lenovo ThinkPad T400",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"),
+ },
+ },
+ { /* Solves the 9 second delay when rebooting with the T500 */
+ .callback = set_pci_reboot,
+ .ident = "Lenovo ThinkPad T500",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"),
+ },
+ },
{ }
};
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