Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] powernow-k8.c: fix a check-after-use
  [CPUFREQ] Remove duplicate check in powernow-k8
  [CPUFREQ] drivers/cpufreq/cpufreq.c: static functions mustn't be exported
  [CPUFREQ] If max_freq got reduced (e.g. by _PPC) a write to sysfs scaling_governor let cpufreq core stuck at low max_freq for ever
  [CPUFREQ] x86_64: Proper null pointer check in powernow_k8_get
  [CPUFREQ] x86_64: Revert earlier powernow-k8 change
  [CPUFREQ] Update LART site URL
  [CPUFREQ] Remove pointless check in conservative governor.
  [CPUFREQ] trailing whitespace removal de-jour.
  [CPUFREQ] extra debugging in cpufreq_add_dev()

5 files changed, 27 insertions, 18 deletions

diff --git a/Documentation/cpu-freq/index.txt b/Documentation/cpu-freq/index.txt
index 5009805f9378..ffdb5323df37 100644
--- a/Documentation/cpu-freq/index.txt
+++ b/Documentation/cpu-freq/index.txt
@@ -53,4 +53,4 @@ the CPUFreq Mailing list:
 * http://lists.linux.org.uk/mailman/listinfo/cpufreq
 
 Clock and voltage scaling for the SA-1100:
-* http://www.lart.tudelft.nl/projects/scaling
+* http://www.lartmaker.nl/projects/scaling
diff --git a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
index 7c0e160a2145..71fffa174425 100644
--- a/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/i386/kernel/cpu/cpufreq/powernow-k8.c
@@ -905,14 +905,17 @@ static int powernowk8_target(struct cpufreq_policy *pol, unsigned targfreq, unsi
 {
 	cpumask_t oldmask = CPU_MASK_ALL;
 	struct powernow_k8_data *data = powernow_data[pol->cpu];
-	u32 checkfid = data->currfid;
-	u32 checkvid = data->currvid;
+	u32 checkfid;
+	u32 checkvid;
 	unsigned int newstate;
 	int ret = -EIO;
 
 	if (!data)
 		return -EINVAL;
 
+	checkfid = data->currfid;
+	checkvid = data->currvid;
+
 	/* only run on specific CPU from here on */
 	oldmask = current->cpus_allowed;
 	set_cpus_allowed(current, cpumask_of_cpu(pol->cpu));
@@ -1109,9 +1112,6 @@ static unsigned int powernowk8_get (unsigned int cpu)
 	if (!data)
 		return -EINVAL;
 
-	if (!data)
-		return -EINVAL;
-
 	set_cpus_allowed(current, cpumask_of_cpu(cpu));
 	if (smp_processor_id() != cpu) {
 		printk(KERN_ERR PFX "limiting to CPU %d failed in powernowk8_get\n", cpu);
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 60c9be99c6d9..2cc71b66231e 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -99,7 +99,7 @@ config CPU_FREQ_GOV_USERSPACE
 	  Enable this cpufreq governor when you either want to set the
 	  CPU frequency manually or when an userspace program shall
 	  be able to set the CPU dynamically, like on LART 
-	  <http://www.lart.tudelft.nl/>
+	  <http://www.lartmaker.nl/>.
 
 	  For details, take a look at <file:Documentation/cpu-freq/>.
 
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 9b6ae7dc8b8a..9759d05b1972 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -319,7 +319,6 @@ out:
 	}
 	return -EINVAL;
 }
-EXPORT_SYMBOL_GPL(cpufreq_parse_governor);
 
 
 /* drivers/base/cpu.c */
@@ -346,6 +345,8 @@ show_one(scaling_min_freq, min);
 show_one(scaling_max_freq, max);
 show_one(scaling_cur_freq, cur);
 
+static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_policy *policy);
+
 /**
  * cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access
  */
@@ -364,7 +365,10 @@ static ssize_t store_##file_name					\
 	if (ret != 1)							\
 		return -EINVAL;						\
 									\
-	ret = cpufreq_set_policy(&new_policy);				\
+	mutex_lock(&policy->lock);					\
+	ret = __cpufreq_set_policy(policy, &new_policy);		\
+	policy->user_policy.object = policy->object;			\
+	mutex_unlock(&policy->lock);					\
 									\
 	return ret ? ret : count;					\
 }
@@ -420,7 +424,15 @@ static ssize_t store_scaling_governor (struct cpufreq_policy * policy,
 	if (cpufreq_parse_governor(str_governor, &new_policy.policy, &new_policy.governor))
 		return -EINVAL;
 
-	ret = cpufreq_set_policy(&new_policy);
+	/* Do not use cpufreq_set_policy here or the user_policy.max
+	   will be wrongly overridden */
+	mutex_lock(&policy->lock);
+	ret = __cpufreq_set_policy(policy, &new_policy);
+
+	policy->user_policy.policy = policy->policy;
+	policy->user_policy.governor = policy->governor;
+	mutex_unlock(&policy->lock);
+
 	return ret ? ret : count;
 }
 
@@ -685,7 +697,7 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
 		if (!cpu_online(j))
 			continue;
 
-		dprintk("CPU already managed, adding link\n");
+		dprintk("CPU %u already managed, adding link\n", j);
 		cpufreq_cpu_get(cpu);
 		cpu_sys_dev = get_cpu_sysdev(j);
 		sysfs_create_link(&cpu_sys_dev->kobj, &policy->kobj,
@@ -695,9 +707,8 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
 	policy->governor = NULL; /* to assure that the starting sequence is
 				  * run in cpufreq_set_policy */
 	mutex_unlock(&policy->lock);
-	
+
 	/* set default policy */
-	
 	ret = cpufreq_set_policy(&new_policy);
 	if (ret) {
 		dprintk("setting policy failed\n");
@@ -707,7 +718,7 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
 	module_put(cpufreq_driver->owner);
 	dprintk("initialization complete\n");
 	cpufreq_debug_enable_ratelimit();
-	
+
 	return 0;
 
 
diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 037f6bf4543c..e07a35487bde 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -176,8 +176,7 @@ static ssize_t store_up_threshold(struct cpufreq_policy *unused,
 	ret = sscanf (buf, "%u", &input);
 
 	mutex_lock(&dbs_mutex);
-	if (ret != 1 || input > 100 || input < 0 ||
-			input <= dbs_tuners_ins.down_threshold) {
+	if (ret != 1 || input > 100 || input <= dbs_tuners_ins.down_threshold) {
 		mutex_unlock(&dbs_mutex);
 		return -EINVAL;
 	}
@@ -196,8 +195,7 @@ static ssize_t store_down_threshold(struct cpufreq_policy *unused,
 	ret = sscanf (buf, "%u", &input);
 
 	mutex_lock(&dbs_mutex);
-	if (ret != 1 || input > 100 || input < 0 ||
-			input >= dbs_tuners_ins.up_threshold) {
+	if (ret != 1 || input > 100 || input >= dbs_tuners_ins.up_threshold) {
 		mutex_unlock(&dbs_mutex);
 		return -EINVAL;
 	}