[PATCH] arch/x86/kernel/quirks.c, kernel 2.6.24.3, hpet clock enable on nVidia nForce 430

[Zbigniew Luszpinski <zbiggy@o2.pl>]

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Hello,

this patch allows hpet=force on nVidia nForce 430 southbridge.
This patch was tested by me on my old Asus A8N-VM CSM (where bios does not 
support hpet and does not advertise it via acpi entry). My nForce430 version:
lspci -nn | grep LPC
00:0a.0 ISA bridge [0601]: nVidia Corporation MCP51 LPC Bridge [10de:0260] 
(rev a2)

Kernel 2.6.24.3 after patching and using hpet=force reports this:
dmesg | grep -i hpet
Kernel command line: root=/dev/sda8 ro vga=773 video=vesafb:mtrr:4,ywrap 
vt.default_utf8=0 hpet=force
Force enabled HPET at base address 0xfed00000
hpet clockevent registered
Time: hpet clocksource has been installed.

grep -i hpet /proc/timer_list
Clock Event Device: hpet
 set_next_event: hpet_legacy_next_event
 set_mode:       hpet_legacy_set_mode

grep Clock /proc/timer_list (before patching)
Clock Event Device: pit
Clock Event Device: lapic

grep Clock /proc/timer_list (after patching)
Clock Event Device: hpet
Clock Event Device: lapic

have a nice day,
Zbigniew 'zbiggy' Luszpinski

[-- Attachment #2: nforce430.patch --]
[-- Type: text/x-diff, Size: 462 bytes --]

--- linux-2.6.24.3/arch/x86/kernel/quirks.c	2008-01-24 23:58:37.000000000 +0100
+++ linux-2.6.24.3/arch/x86/kernel/quirks.c	2008-03-13 03:01:19.000000000 +0100
@@ -355,6 +355,8 @@
 			nvidia_force_enable_hpet);
 
 /* LPC bridges */
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0260,
+			nvidia_force_enable_hpet);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0360,
 			nvidia_force_enable_hpet);
 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0361,