[ACPI] merge 3549 4320 4485 4588 4980 5483 5651 acpica asus fops pnpacpi branches...

[pandora-kernel.git] / drivers / acpi / processor_core.c

diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 1278aca..99a3a28 100644 (file)
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -253,31 +253,21 @@ static int acpi_processor_errata(struct acpi_processor *pr)
  * _PDC is required for a BIOS-OS handshake for most of the newer
  * ACPI processor features.
  */
-
-int acpi_processor_set_pdc(struct acpi_processor *pr,
-                          struct acpi_object_list *pdc_in)
+static int acpi_processor_set_pdc(struct acpi_processor *pr)
 {
+       struct acpi_object_list *pdc_in = pr->pdc;
        acpi_status status = AE_OK;
-       u32 arg0_buf[3];
-       union acpi_object arg0 = { ACPI_TYPE_BUFFER };
-       struct acpi_object_list no_object = { 1, &arg0 };
-       struct acpi_object_list *pdc;
 
        ACPI_FUNCTION_TRACE("acpi_processor_set_pdc");
 
-       arg0.buffer.length = 12;
-       arg0.buffer.pointer = (u8 *) arg0_buf;
-       arg0_buf[0] = ACPI_PDC_REVISION_ID;
-       arg0_buf[1] = 0;
-       arg0_buf[2] = 0;
-
-       pdc = (pdc_in) ? pdc_in : &no_object;
+       if (!pdc_in)
+               return_VALUE(status);
 
-       status = acpi_evaluate_object(pr->handle, "_PDC", pdc, NULL);
+       status = acpi_evaluate_object(pr->handle, "_PDC", pdc_in, NULL);
 
-       if ((ACPI_FAILURE(status)) && (pdc_in))
+       if (ACPI_FAILURE(status))
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
-                                 "Error evaluating _PDC, using legacy perf. control...\n"));
+                   "Could not evaluate _PDC, using legacy perf. control...\n"));
 
        return_VALUE(status);
 }
@@ -357,7 +347,6 @@ static int acpi_processor_add_fs(struct acpi_device *device)
                                  ACPI_PROCESSOR_FILE_THROTTLING));
        else {
                entry->proc_fops = &acpi_processor_throttling_fops;
-               entry->proc_fops->write = acpi_processor_write_throttling;
                entry->data = acpi_driver_data(device);
                entry->owner = THIS_MODULE;
        }
@@ -372,7 +361,6 @@ static int acpi_processor_add_fs(struct acpi_device *device)
                                  ACPI_PROCESSOR_FILE_LIMIT));
        else {
                entry->proc_fops = &acpi_processor_limit_fops;
-               entry->proc_fops->write = acpi_processor_write_limit;
                entry->data = acpi_driver_data(device);
                entry->owner = THIS_MODULE;
        }
@@ -589,6 +577,10 @@ static int acpi_processor_start(struct acpi_device *device)
                                  "Error installing device notify handler\n"));
        }
 
+       /* _PDC call should be done before doing anything else (if reqd.). */
+       arch_acpi_processor_init_pdc(pr);
+       acpi_processor_set_pdc(pr);
+
        acpi_processor_power_init(pr, device);
 
        if (pr->flags.throttling) {