From: Andi Kleen <ak@muc.de> The i386 HPET time setup code would explicitely check for the Intel vendor ID. That is bogus because other chipset vendors (like AMD) are implementing HPET too. Remove this check. arch/i386/kernel/time_hpet.c | 4 ---- include/asm-i386/hpet.h | 4 ---- 2 files changed, 8 deletions(-) diff -puN arch/i386/kernel/time_hpet.c~remove-hpet-intel-check arch/i386/kernel/time_hpet.c --- 25/arch/i386/kernel/time_hpet.c~remove-hpet-intel-check 2004-01-04 14:12:20.000000000 -0800 +++ 25-akpm/arch/i386/kernel/time_hpet.c 2004-01-04 14:12:20.000000000 -0800 @@ -91,10 +91,6 @@ int __init hpet_enable(void) !(id & HPET_ID_LEGSUP)) return -1; - if (((id & HPET_ID_VENDOR) >> HPET_ID_VENDOR_SHIFT) != - HPET_ID_VENDOR_8086) - return -1; - hpet_period = hpet_readl(HPET_PERIOD); if ((hpet_period < HPET_MIN_PERIOD) || (hpet_period > HPET_MAX_PERIOD)) return -1; diff -puN include/asm-i386/hpet.h~remove-hpet-intel-check include/asm-i386/hpet.h --- 25/include/asm-i386/hpet.h~remove-hpet-intel-check 2004-01-04 14:16:24.000000000 -0800 +++ 25-akpm/include/asm-i386/hpet.h 2004-01-04 14:17:25.000000000 -0800 @@ -54,14 +54,10 @@ #define HPET_T2_CMP 0x148 #define HPET_T2_ROUTE 0x150 -#define HPET_ID_VENDOR 0xffff0000 #define HPET_ID_LEGSUP 0x00008000 #define HPET_ID_NUMBER 0x00001f00 #define HPET_ID_REV 0x000000ff -#define HPET_ID_VENDOR_SHIFT 16 -#define HPET_ID_VENDOR_8086 0x8086 - #define HPET_CFG_ENABLE 0x001 #define HPET_CFG_LEGACY 0x002 _