redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

[CPUFREQ] Remove unneeded errata workaround from p4-clockmod.

Browse source 
This workaround unnecessarily cripples functionality to work
around an errata that doesn't seem possible to hit due to
us using the automatic clock throttling in the p4 mcheck code.

See http://lkml.org/lkml/2006/10/28/148 for complete reasoning
and lack of disconsent.

Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Dave Jones 2007-01-29 00:07:04 -05:00
parent 0142f9dce8
commit 3453c8478a
1 changed files with 0 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
View file

@ -51,7 +51,6 @@ enum {
static int has_N44_O17_errata[NR_CPUS];
static int has_N60_errata[NR_CPUS];
static unsigned int stock_freq;
static struct cpufreq_driver p4clockmod_driver;
static unsigned int cpufreq_p4_get(unsigned int cpu);
@ -224,12 +223,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
case 0x0f12:
has_N44_O17_errata[policy->cpu] = 1;
dprintk("has errata -- disabling low frequencies\n");
break;
case 0x0f29:
has_N60_errata[policy->cpu] = 1;
dprintk("has errata -- disabling frequencies lower than 2ghz\n");
break;
}
/* get max frequency */
@ -241,8 +234,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
if ((i<2) && (has_N44_O17_errata[policy->cpu]))
p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
else if (has_N60_errata[policy->cpu] && ((stock_freq * i)/8) < 2000000)
p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
else
p4clockmod_table[i].frequency = (stock_freq * i)/8;
}