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Commit f5e88615 authored by takada's avatar takada Committed by Andi Kleen
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[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 <ak@suse.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
parent 9215da33

arch/i386/kernel/cpu/cyrix.c

+1 −1
Original line number Diff line number Diff line
@@ -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 */

arch/i386/kernel/time.c

+0 −2
Original line number Diff line number Diff line
@@ -70,8 +70,6 @@ 


#include <asm/i8259.h>



int pit_latch_buggy;              /* extern */



#include "do_timer.h"



unsigned int cpu_khz;	/* Detected as we calibrate the TSC */

include/asm-i386/timer.h

+0 −2
Original line number Diff line number Diff line
@@ -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;