aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-08 15:49:25 -0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-08 15:49:25 -0400
commit85a229f4c729c4de48ba241f77e447c36bbc07f7 (patch)
tree924a27434d5846f69b541012494d6ea1f2cb10cf
parentf991fae5c6d42dfc5029150b05a78cf3f6c18cc9 (diff)
parent266c13d767be61a17d8e6f2310b9b7c46278273b (diff)
Merge branch 'pm-fixes'
* pm-fixes: cpufreq: Fix serialization of frequency transitions
-rw-r--r--drivers/cpufreq/cpufreq.c7
-rw-r--r--include/linux/cpufreq.h2
2 files changed, 5 insertions, 4 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6a015ada5285..0937b8d6c2a4 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -312,11 +312,12 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy,
312 switch (state) { 312 switch (state) {
313 313
314 case CPUFREQ_PRECHANGE: 314 case CPUFREQ_PRECHANGE:
315 if (WARN(policy->transition_ongoing, 315 if (WARN(policy->transition_ongoing ==
316 cpumask_weight(policy->cpus),
316 "In middle of another frequency transition\n")) 317 "In middle of another frequency transition\n"))
317 return; 318 return;
318 319
319 policy->transition_ongoing = true; 320 policy->transition_ongoing++;
320 321
321 /* detect if the driver reported a value as "old frequency" 322 /* detect if the driver reported a value as "old frequency"
322 * which is not equal to what the cpufreq core thinks is 323 * which is not equal to what the cpufreq core thinks is
@@ -341,7 +342,7 @@ static void __cpufreq_notify_transition(struct cpufreq_policy *policy,
341 "No frequency transition in progress\n")) 342 "No frequency transition in progress\n"))
342 return; 343 return;
343 344
344 policy->transition_ongoing = false; 345 policy->transition_ongoing--;
345 346
346 adjust_jiffies(CPUFREQ_POSTCHANGE, freqs); 347 adjust_jiffies(CPUFREQ_POSTCHANGE, freqs);
347 pr_debug("FREQ: %lu - CPU: %lu", (unsigned long)freqs->new, 348 pr_debug("FREQ: %lu - CPU: %lu", (unsigned long)freqs->new,
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 4d7390bc1727..90d5a15120d5 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -119,7 +119,7 @@ struct cpufreq_policy {
119 119
120 struct kobject kobj; 120 struct kobject kobj;
121 struct completion kobj_unregister; 121 struct completion kobj_unregister;
122 bool transition_ongoing; /* Tracks transition status */ 122 int transition_ongoing; /* Tracks transition status */
123}; 123};
124 124
125#define CPUFREQ_ADJUST (0) 125#define CPUFREQ_ADJUST (0)