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authorDave Jones <davej@redhat.com>2007-01-29 00:07:04 -0500
committerDave Jones <davej@redhat.com>2007-01-29 00:07:04 -0500
commit3453c8478a228d9b374956ea99256163f1a0c88c (patch)
tree045078bc9feef6a74c7813e8892e4d37d938640b /arch
parent0142f9dce8425da031d72dc3b70ee7161fcaaea2 (diff)
[CPUFREQ] Remove unneeded errata workaround from p4-clockmod.
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/i386/kernel/cpu/cpufreq/p4-clockmod.c9
1 files changed, 0 insertions, 9 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
index bec50170b75..4786fedca6e 100644
--- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
@@ -51,7 +51,6 @@ enum {
51 51
52 52
53static int has_N44_O17_errata[NR_CPUS]; 53static int has_N44_O17_errata[NR_CPUS];
54static int has_N60_errata[NR_CPUS];
55static unsigned int stock_freq; 54static unsigned int stock_freq;
56static struct cpufreq_driver p4clockmod_driver; 55static struct cpufreq_driver p4clockmod_driver;
57static unsigned int cpufreq_p4_get(unsigned int cpu); 56static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -224,12 +223,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
224 case 0x0f12: 223 case 0x0f12:
225 has_N44_O17_errata[policy->cpu] = 1; 224 has_N44_O17_errata[policy->cpu] = 1;
226 dprintk("has errata -- disabling low frequencies\n"); 225 dprintk("has errata -- disabling low frequencies\n");
227 break;
228
229 case 0x0f29:
230 has_N60_errata[policy->cpu] = 1;
231 dprintk("has errata -- disabling frequencies lower than 2ghz\n");
232 break;
233 } 226 }
234 227
235 /* get max frequency */ 228 /* get max frequency */
@@ -241,8 +234,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
241 for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) { 234 for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
242 if ((i<2) && (has_N44_O17_errata[policy->cpu])) 235 if ((i<2) && (has_N44_O17_errata[policy->cpu]))
243 p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID; 236 p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
244 else if (has_N60_errata[policy->cpu] && ((stock_freq * i)/8) < 2000000)
245 p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
246 else 237 else
247 p4clockmod_table[i].frequency = (stock_freq * i)/8; 238 p4clockmod_table[i].frequency = (stock_freq * i)/8;
248 } 239 }