acpi-cpufreq: Fix some x86/x86-64 acpi-cpufreq driver issues

This patch addresses some issues in x86/x86-64 acpi-cpufreq driver:

1.  Current memory allocation for acpi_perf_data is actually open-coded
   alloc_percpu().  The patch defines and handles acpi_perf_data as percpu
   data.  The code will be cleaner and easier to be maintained with this
   change.

2. Won't load driver in acpi_cpufreq_early_init() failure case.

3. Add __init for acpi_cpufreq_early_init().

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index c4efc0c17f8f..463b0247cbc5 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -539,7 +539,7 @@ end:
 }
 
 int acpi_processor_preregister_performance(
-                struct acpi_processor_performance **performance)
+                struct acpi_processor_performance *performance)
 {
         int count, count_target;
         int retval = 0;
@@ -567,12 +567,12 @@ int acpi_processor_preregister_performance(
                         continue;
                 }
 
-                if (!performance || !performance[i]) {
+                if (!performance || !percpu_ptr(performance, i)) {
                         retval = -EINVAL;
                         continue;
                 }
 
-                pr->performance = performance[i];
+                pr->performance = percpu_ptr(performance, i);
                 cpu_set(i, pr->performance->shared_cpu_map);
                 if (acpi_processor_get_psd(pr)) {
                         retval = -EINVAL;