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Commit df049672 authored by Tero Roponen's avatar Tero Roponen Committed by John Stultz
Browse files

x86: tsc: Remove unneeded DMI-based blacklisting 

The blacklist was added in response to my bug report
(http://lkml.org/lkml/2006/1/19/362) and has never
contained more than the one entry describing my old
now dead ThinkPad 380XD laptop. As found out later
(http://lkml.org/lkml/2007/11/29/50

), this special
treatment has been unnecessary for a long time, so
it can be removed.

Signed-off-by: default avatarTero Roponen <tero.roponen@gmail.com>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 643d2d79

arch/x86/kernel/tsc.c

+0 −24
Original line number Diff line number Diff line
@@ -5,7 +5,6 @@ 
#include <linux/timer.h>

#include <linux/acpi_pmtmr.h>

#include <linux/cpufreq.h>

#include <linux/dmi.h>

#include <linux/delay.h>

#include <linux/clocksource.h>

#include <linux/percpu.h>
@@ -800,27 +799,6 @@ void mark_tsc_unstable(char *reason) 


EXPORT_SYMBOL_GPL(mark_tsc_unstable);



static int __init dmi_mark_tsc_unstable(const struct dmi_system_id *d)

{

	printk(KERN_NOTICE "%s detected: marking TSC unstable.\n",

			d->ident);

	tsc_unstable = 1;

	return 0;

}



/* List of systems that have known TSC problems */

static struct dmi_system_id __initdata bad_tsc_dmi_table[] = {

	{

		.callback = dmi_mark_tsc_unstable,

		.ident = "IBM Thinkpad 380XD",

		.matches = {

			DMI_MATCH(DMI_BOARD_VENDOR, "IBM"),

			DMI_MATCH(DMI_BOARD_NAME, "2635FA0"),

		},

	},

	{}

};



static void __init check_system_tsc_reliable(void)

{

#ifdef CONFIG_MGEODE_LX
@@ -1010,8 +988,6 @@ void __init tsc_init(void) 
	lpj_fine = lpj;



	use_tsc_delay();

	/* Check and install the TSC clocksource */

	dmi_check_system(bad_tsc_dmi_table);



	if (unsynchronized_tsc())

		mark_tsc_unstable("TSCs unsynchronized");