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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-11-07 13:18:27 -0500
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-11-07 13:18:27 -0500
commit8dbb8d54fe0bb551d515393fca495508d36af2a1 (patch)
treefd35c997c01a7e61cf6e547e6561a34887a42c25
parent93658cb8597ab76655220be43d3d7f74c66e9e4e (diff)
parent34411a69a4925dd6de8e1069956f59d758da3ce9 (diff)
Merge branch 'acpi-processor'
* acpi-processor: ACPI / processor: Do not request ACPI cpufreq module directly
-rw-r--r--drivers/acpi/processor_driver.c1
-rw-r--r--drivers/acpi/processor_perflib.c22
-rw-r--r--include/acpi/processor.h1
3 files changed, 0 insertions, 24 deletions
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index 40fc773ab6e0..146ab7e2b81d 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -171,7 +171,6 @@ static int __acpi_processor_start(struct acpi_device *device)
171 171
172#ifdef CONFIG_CPU_FREQ 172#ifdef CONFIG_CPU_FREQ
173 acpi_processor_ppc_has_changed(pr, 0); 173 acpi_processor_ppc_has_changed(pr, 0);
174 acpi_processor_load_module(pr);
175#endif 174#endif
176 acpi_processor_get_throttling_info(pr); 175 acpi_processor_get_throttling_info(pr);
177 176
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 51d7948611da..60a7c28fc167 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -235,28 +235,6 @@ void acpi_processor_ppc_exit(void)
235 acpi_processor_ppc_status &= ~PPC_REGISTERED; 235 acpi_processor_ppc_status &= ~PPC_REGISTERED;
236} 236}
237 237
238/*
239 * Do a quick check if the systems looks like it should use ACPI
240 * cpufreq. We look at a _PCT method being available, but don't
241 * do a whole lot of sanity checks.
242 */
243void acpi_processor_load_module(struct acpi_processor *pr)
244{
245 static int requested;
246 acpi_status status = 0;
247 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
248
249 if (!arch_has_acpi_pdc() || requested)
250 return;
251 status = acpi_evaluate_object(pr->handle, "_PCT", NULL, &buffer);
252 if (!ACPI_FAILURE(status)) {
253 printk(KERN_INFO PREFIX "Requesting acpi_cpufreq\n");
254 request_module_nowait("acpi_cpufreq");
255 requested = 1;
256 }
257 kfree(buffer.pointer);
258}
259
260static int acpi_processor_get_performance_control(struct acpi_processor *pr) 238static int acpi_processor_get_performance_control(struct acpi_processor *pr)
261{ 239{
262 int result = 0; 240 int result = 0;
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 7816e45f5d5a..6eb1d3cb5104 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -225,7 +225,6 @@ struct acpi_processor_errata {
225 } piix4; 225 } piix4;
226}; 226};
227 227
228extern void acpi_processor_load_module(struct acpi_processor *pr);
229extern int acpi_processor_preregister_performance(struct 228extern int acpi_processor_preregister_performance(struct
230 acpi_processor_performance 229 acpi_processor_performance
231 __percpu *performance); 230 __percpu *performance);