From f5e8861583a591020176c90c10c6a130fed4f3ec Mon Sep 17 00:00:00 2001 From: takada Date: Wed, 2 May 2007 19:27:05 +0200 Subject: [PATCH] [PATCH] i386: pit_latch_buggy has no effect Eliminated the arch/i386/kernel/timers in 2.6.18, use clocksoures instead. pit_latch_buggy was referred in timers/timer_tsc.c, and currently removed. Therefore nobody refer it. Until 2.6.17, MediaGX's TSC works correctly. after 2.6.18, warned "TSC appears to be running slowly. Marking it as unstable". So marked unstable TSC when CS55x0. Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Andi Kleen --- arch/i386/kernel/cpu/cyrix.c | 2 +- arch/i386/kernel/time.c | 2 -- include/asm-i386/timer.h | 2 -- 3 files changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/i386/kernel/cpu/cyrix.c b/arch/i386/kernel/cpu/cyrix.c index de27bd07bc9c..f0badfdd4e45 100644 --- a/arch/i386/kernel/cpu/cyrix.c +++ b/arch/i386/kernel/cpu/cyrix.c @@ -279,7 +279,7 @@ static void __cpuinit init_cyrix(struct cpuinfo_x86 *c) */ if (vendor == PCI_VENDOR_ID_CYRIX && (device == PCI_DEVICE_ID_CYRIX_5510 || device == PCI_DEVICE_ID_CYRIX_5520)) - pit_latch_buggy = 1; + mark_tsc_unstable(); } #endif c->x86_cache_size=16; /* Yep 16K integrated cache thats it */ diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c index 94e5cb091104..a665df61f08c 100644 --- a/arch/i386/kernel/time.c +++ b/arch/i386/kernel/time.c @@ -70,8 +70,6 @@ #include -int pit_latch_buggy; /* extern */ - #include "do_timer.h" unsigned int cpu_khz; /* Detected as we calibrate the TSC */ diff --git a/include/asm-i386/timer.h b/include/asm-i386/timer.h index 12dd67bf760f..153770e25faa 100644 --- a/include/asm-i386/timer.h +++ b/include/asm-i386/timer.h @@ -9,8 +9,6 @@ void setup_pit_timer(void); unsigned long long native_sched_clock(void); unsigned long native_calculate_cpu_khz(void); -/* Modifiers for buggy PIT handling */ -extern int pit_latch_buggy; extern int timer_ack; extern int no_timer_check; extern int no_sync_cmos_clock; -- 2.20.1