ACPI: Discard invalid elements in _PSS package

Make sure that the _PSS list is sorted in
descending order by typical power dissipation.

http://bugzilla.kernel.org/show_bug.cgi?id=7880

Signed-off-by: Zhang Rui <[email protected]>
Signed-off-by: Len Brown <[email protected]>

diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 10baa3501ed336c37b5d9a5662ce99484c48d651..9ba2b69fc64aeb4c1fc14fdaa2a4715cace8d181 100644 (file)
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -668,8 +668,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
        data->max_freq = perf->states[0].core_frequency * 1000;
        /* table init */
        for (i=0; i<perf->state_count; i++) {
-               if (i>0 && perf->states[i].core_frequency ==
-                   perf->states[i-1].core_frequency)
+               if (i>0 && perf->states[i].core_frequency >=
+                   data->freq_table[valid_states-1].frequency / 1000)
                        continue;
 
                data->freq_table[valid_states].index = i;