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authorAlex Chiang <achiang@hp.com>2009-12-20 12:19:19 -0700
committerLen Brown <len.brown@intel.com>2009-12-22 03:24:11 -0500
commit407cd87c54e76c266245e8faef8dd4a84b7254fe (patch)
treee07067c0d51317a4dc93144f1d16c050a0f5ca89 /arch/x86
parent1d9cb470a755409ce97c3376174b1e234bd20371 (diff)
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ACPI: processor: unify arch_acpi_processor_init_pdc
The x86 and ia64 implementations of arch_acpi_processor_init_pdc() are almost exactly the same. The only difference is in what bits they set in obj_list buffer. Combine the boilerplate memory management code, and leave the arch-specific bit twiddling in separate implementations. Cc: Tony Luck <tony.luck@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/acpi/processor.c34
1 files changed, 1 insertions, 33 deletions
diff --git a/arch/x86/kernel/acpi/processor.c b/arch/x86/kernel/acpi/processor.c
index bcb6efe08c5d..967860b43f2a 100644
--- a/arch/x86/kernel/acpi/processor.c
+++ b/arch/x86/kernel/acpi/processor.c
@@ -14,31 +14,7 @@
static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
{
- struct acpi_object_list *obj_list;
- union acpi_object *obj;
- u32 *buf;
-
- /* allocate and initialize pdc. It will be used later. */
- obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
- if (!obj_list) {
- printk(KERN_ERR "Memory allocation error\n");
- return;
- }
-
- obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
- if (!obj) {
- printk(KERN_ERR "Memory allocation error\n");
- kfree(obj_list);
- return;
- }
-
- buf = kmalloc(12, GFP_KERNEL);
- if (!buf) {
- printk(KERN_ERR "Memory allocation error\n");
- kfree(obj);
- kfree(obj_list);
- return;
- }
+ u32 *buf = (u32 *)pr->pdc->pointer->buffer.pointer;
buf[0] = ACPI_PDC_REVISION_ID;
buf[1] = 1;
@@ -62,13 +38,6 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
if (!cpu_has(c, X86_FEATURE_MWAIT))
buf[2] &= ~(ACPI_PDC_C_C2C3_FFH);
- obj->type = ACPI_TYPE_BUFFER;
- obj->buffer.length = 12;
- obj->buffer.pointer = (u8 *) buf;
- obj_list->count = 1;
- obj_list->pointer = obj;
- pr->pdc = obj_list;
-
return;
}
@@ -78,7 +47,6 @@ void arch_acpi_processor_init_pdc(struct acpi_processor *pr)
{
struct cpuinfo_x86 *c = &cpu_data(pr->id);
- pr->pdc = NULL;
init_intel_pdc(pr, c);
return;