cpupowerutils: lib - ConfigStyle bugfixes

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

tools/power/cpupower/lib/cpufreq.c

@@ -42,21 +42,25 @@ int cpufreq_get_hardware_limits(unsigned int cpu,
 	return sysfs_get_freq_hardware_limits(cpu, min, max);
 }
 
-char * cpufreq_get_driver(unsigned int cpu) {
+char *cpufreq_get_driver(unsigned int cpu)
+{
 	return sysfs_get_freq_driver(cpu);
 }
 
-void cpufreq_put_driver(char * ptr) {
+void cpufreq_put_driver(char *ptr)
+{
 	if (!ptr)
 		return;
 	free(ptr);
 }
 
-struct cpufreq_policy * cpufreq_get_policy(unsigned int cpu) {
+struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu)
+{
 	return sysfs_get_freq_policy(cpu);
 }
 
-void cpufreq_put_policy(struct cpufreq_policy *policy) {
+void cpufreq_put_policy(struct cpufreq_policy *policy)
+{
 	if ((!policy) || (!policy->governor))
 		return;
 
@@ -65,11 +69,14 @@ void cpufreq_put_policy(struct cpufreq_policy *policy) {
 	free(policy);
 }
 
-struct cpufreq_available_governors * cpufreq_get_available_governors(unsigned int cpu) {
+struct cpufreq_available_governors *cpufreq_get_available_governors(unsigned
+								int cpu)
+{
 	return sysfs_get_freq_available_governors(cpu);
 }
 
-void cpufreq_put_available_governors(struct cpufreq_available_governors *any) {
+void cpufreq_put_available_governors(struct cpufreq_available_governors *any)
+{
 	struct cpufreq_available_governors *tmp, *next;
 
 	if (!any)
@@ -86,11 +93,14 @@ void cpufreq_put_available_governors(struct cpufreq_available_governors *any) {
 }
 
 
-struct cpufreq_available_frequencies * cpufreq_get_available_frequencies(unsigned int cpu) {
+struct cpufreq_available_frequencies
+*cpufreq_get_available_frequencies(unsigned int cpu)
+{
 	return sysfs_get_available_frequencies(cpu);
 }
 
-void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *any) {
+void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies
+				*any) {
 	struct cpufreq_available_frequencies *tmp, *next;
 
 	if (!any)
@@ -105,11 +115,13 @@ void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *any
 }
 
 
-struct cpufreq_affected_cpus * cpufreq_get_affected_cpus(unsigned int cpu) {
+struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned int cpu)
+{
 	return sysfs_get_freq_affected_cpus(cpu);
 }
 
-void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any) {
+void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any)
+{
 	struct cpufreq_affected_cpus *tmp, *next;
 
 	if (!any)
@@ -124,16 +136,19 @@ void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *any) {
 }
 
 
-struct cpufreq_affected_cpus * cpufreq_get_related_cpus(unsigned int cpu) {
+struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned int cpu)
+{
 	return sysfs_get_freq_related_cpus(cpu);
 }
 
-void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any) {
+void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *any)
+{
 	cpufreq_put_affected_cpus(any);
 }
 
 
-int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy) {
+int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy)
+{
 	if (!policy || !(policy->governor))
 		return -EINVAL;
 
@@ -141,35 +156,39 @@ int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy) {
 }
 
 
-int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq) {
+int cpufreq_modify_policy_min(unsigned int cpu, unsigned long min_freq)
+{
 	return sysfs_modify_freq_policy_min(cpu, min_freq);
 }
 
 
-int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq) {
+int cpufreq_modify_policy_max(unsigned int cpu, unsigned long max_freq)
+{
 	return sysfs_modify_freq_policy_max(cpu, max_freq);
 }
 
 
-int cpufreq_modify_policy_governor(unsigned int cpu, char *governor) {
+int cpufreq_modify_policy_governor(unsigned int cpu, char *governor)
+{
 	if ((!governor) || (strlen(governor) > 19))
 		return -EINVAL;
 
 	return sysfs_modify_freq_policy_governor(cpu, governor);
 }
 
-int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency) {
+int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency)
+{
 	return sysfs_set_frequency(cpu, target_frequency);
 }
 
-struct cpufreq_stats * cpufreq_get_stats(unsigned int cpu, unsigned long long *total_time) {
-	struct cpufreq_stats *ret;
-
-	ret = sysfs_get_freq_stats(cpu, total_time);
-	return (ret);
+struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
+					unsigned long long *total_time)
+{
+	return sysfs_get_freq_stats(cpu, total_time);
 }
 
-void cpufreq_put_stats(struct cpufreq_stats *any) {
+void cpufreq_put_stats(struct cpufreq_stats *any)
+{
 	struct cpufreq_stats *tmp, *next;
 
 	if (!any)
@@ -183,8 +202,7 @@ void cpufreq_put_stats(struct cpufreq_stats *any) {
 	}
 }
 
-unsigned long cpufreq_get_transitions(unsigned int cpu) {
-	unsigned long ret = sysfs_get_freq_transitions(cpu);
-
-	return (ret);
+unsigned long cpufreq_get_transitions(unsigned int cpu)
+{
+	return sysfs_get_freq_transitions(cpu);
 }

tools/power/cpupower/lib/cpufreq.h

@@ -93,9 +93,9 @@ extern unsigned long cpufreq_get_transition_latency(unsigned int cpu);
  * considerations by cpufreq policy notifiers in the kernel.
  */
 
-extern int cpufreq_get_hardware_limits(unsigned int cpu, 
-				       unsigned long *min, 
-				       unsigned long *max);
+extern int cpufreq_get_hardware_limits(unsigned int cpu,
+				unsigned long *min,
+				unsigned long *max);
 
 
 /* determine CPUfreq driver used
@@ -104,9 +104,9 @@ extern int cpufreq_get_hardware_limits(unsigned int cpu,
  * to avoid memory leakage, please.
  */
 
-extern char * cpufreq_get_driver(unsigned int cpu);
+extern char *cpufreq_get_driver(unsigned int cpu);
 
-extern void   cpufreq_put_driver(char * ptr);
+extern void cpufreq_put_driver(char *ptr);
 
 
 /* determine CPUfreq policy currently used
@@ -116,7 +116,7 @@ extern void   cpufreq_put_driver(char * ptr);
  */
 
 
-extern struct cpufreq_policy * cpufreq_get_policy(unsigned int cpu);
+extern struct cpufreq_policy *cpufreq_get_policy(unsigned int cpu);
 
 extern void cpufreq_put_policy(struct cpufreq_policy *policy);
 
@@ -129,41 +129,47 @@ extern void cpufreq_put_policy(struct cpufreq_policy *policy);
  */
 
 
-extern struct cpufreq_available_governors * cpufreq_get_available_governors(unsigned int cpu);
+extern struct cpufreq_available_governors
+*cpufreq_get_available_governors(unsigned int cpu);
 
-extern void cpufreq_put_available_governors(struct cpufreq_available_governors *first);
+extern void cpufreq_put_available_governors(
+	struct cpufreq_available_governors *first);
 
 
 /* determine CPU frequency states available
  *
- * only present on _some_ ->target() cpufreq drivers. For information purposes
- * only. Please free allocated memory by calling cpufreq_put_available_frequencies
- * after use.
+ * Only present on _some_ ->target() cpufreq drivers. For information purposes
+ * only. Please free allocated memory by calling
+ * cpufreq_put_available_frequencies after use.
  */
 
-extern struct cpufreq_available_frequencies * cpufreq_get_available_frequencies(unsigned int cpu);
+extern struct cpufreq_available_frequencies
+*cpufreq_get_available_frequencies(unsigned int cpu);
 
-extern void cpufreq_put_available_frequencies(struct cpufreq_available_frequencies *first);
+extern void cpufreq_put_available_frequencies(
+		struct cpufreq_available_frequencies *first);
 
 
-/* determine affected CPUs 
+/* determine affected CPUs
  *
  * Remember to call cpufreq_put_affected_cpus when no longer needed
  * to avoid memory leakage, please.
  */
 
-extern struct cpufreq_affected_cpus * cpufreq_get_affected_cpus(unsigned int cpu);
+extern struct cpufreq_affected_cpus *cpufreq_get_affected_cpus(unsigned
+							int cpu);
 
 extern void cpufreq_put_affected_cpus(struct cpufreq_affected_cpus *first);
 
 
-/* determine related CPUs 
+/* determine related CPUs
  *
  * Remember to call cpufreq_put_related_cpus when no longer needed
  * to avoid memory leakage, please.
  */
 
-extern struct cpufreq_affected_cpus * cpufreq_get_related_cpus(unsigned int cpu);
+extern struct cpufreq_affected_cpus *cpufreq_get_related_cpus(unsigned
+							int cpu);
 
 extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
 
@@ -173,15 +179,16 @@ extern void cpufreq_put_related_cpus(struct cpufreq_affected_cpus *first);
  * This is not available in all kernel versions or configurations.
  */
 
-extern struct cpufreq_stats * cpufreq_get_stats(unsigned int cpu, unsigned long long *total_time);
+extern struct cpufreq_stats *cpufreq_get_stats(unsigned int cpu,
+					unsigned long long *total_time);
 
 extern void cpufreq_put_stats(struct cpufreq_stats *stats);
 
 extern unsigned long cpufreq_get_transitions(unsigned int cpu);
 
 
-/* set new cpufreq policy 
- * 
+/* set new cpufreq policy
+ *
  * Tries to set the passed policy as new policy as close as possible,
  * but results may differ depending e.g. on governors being available.
  */
@@ -189,7 +196,7 @@ extern unsigned long cpufreq_get_transitions(unsigned int cpu);
 extern int cpufreq_set_policy(unsigned int cpu, struct cpufreq_policy *policy);
 
 
-/* modify a policy by only changing min/max freq or governor 
+/* modify a policy by only changing min/max freq or governor
  *
  * Does not check whether result is what was intended.
  */
@@ -202,11 +209,12 @@ extern int cpufreq_modify_policy_governor(unsigned int cpu, char *governor);
 /* set a specific frequency
  *
  * Does only work if userspace governor can be used and no external
- * interference (other calls to this function or to set/modify_policy) 
+ * interference (other calls to this function or to set/modify_policy)
  * occurs. Also does not work on ->range() cpufreq drivers.
  */
 
-extern int cpufreq_set_frequency(unsigned int cpu, unsigned long target_frequency);
+extern int cpufreq_set_frequency(unsigned int cpu,
+				unsigned long target_frequency);
 
 #ifdef __cplusplus
 }

tools/power/cpupower/lib/sysfs.c

@@ -24,14 +24,14 @@
 static unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen)
 {
 	int fd;
-	size_t numread;
+	ssize_t numread;
 
-	if ( ( fd = open(path, O_RDONLY) ) == -1 )
+	fd = open(path, O_RDONLY);
+	if (fd == -1)
 		return 0;
 
 	numread = read(fd, buf, buflen - 1);
-	if ( numread < 1 )
-	{
+	if (numread < 1) {
 		close(fd);
 		return 0;
 	}
@@ -39,7 +39,7 @@ static unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen)
 	buf[numread] = '\0';
 	close(fd);
 
-	return numread;
+	return (unsigned int) numread;
 }
 
 
@@ -65,24 +65,24 @@ static unsigned int sysfs_cpufreq_write_file(unsigned int cpu,
 {
 	char path[SYSFS_PATH_MAX];
 	int fd;
-	size_t numwrite;
+	ssize_t numwrite;
 
 	snprintf(path, sizeof(path), PATH_TO_CPU "cpu%u/cpufreq/%s",
 			 cpu, fname);
 
-	if ( ( fd = open(path, O_WRONLY) ) == -1 )
+	fd = open(path, O_WRONLY);
+	if (fd == -1)
 		return 0;
 
 	numwrite = write(fd, value, len);
-	if ( numwrite < 1 )
-	{
+	if (numwrite < 1) {
 		close(fd);
 		return 0;
 	}
 
 	close(fd);
 
-	return numwrite;
+	return (unsigned int) numwrite;
 }
 
 /* read access to files which contain one numeric value */
@@ -114,21 +114,23 @@ static const char *cpufreq_value_files[MAX_CPUFREQ_VALUE_READ_FILES] = {
 static unsigned long sysfs_cpufreq_get_one_value(unsigned int cpu,
 						 enum cpufreq_value which)
 {
- 	unsigned long value;
+	unsigned long value;
 	unsigned int len;
 	char linebuf[MAX_LINE_LEN];
 	char *endp;
 
-	if ( which >= MAX_CPUFREQ_VALUE_READ_FILES )
+	if (which >= MAX_CPUFREQ_VALUE_READ_FILES)
 		return 0;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which],
-					     linebuf, sizeof(linebuf))) == 0 )
+	len = sysfs_cpufreq_read_file(cpu, cpufreq_value_files[which],
+				linebuf, sizeof(linebuf));
+
+	if (len == 0)
 		return 0;
 
 	value = strtoul(linebuf, &endp, 0);
 
-	if ( endp == linebuf || errno == ERANGE )
+	if (endp == linebuf || errno == ERANGE)
 		return 0;
 
 	return value;
@@ -148,7 +150,7 @@ static const char *cpufreq_string_files[MAX_CPUFREQ_STRING_FILES] = {
 };
 
 
-static char * sysfs_cpufreq_get_one_string(unsigned int cpu,
+static char *sysfs_cpufreq_get_one_string(unsigned int cpu,
 					   enum cpufreq_string which)
 {
 	char linebuf[MAX_LINE_LEN];
@@ -158,11 +160,13 @@ static char * sysfs_cpufreq_get_one_string(unsigned int cpu,
 	if (which >= MAX_CPUFREQ_STRING_FILES)
 		return NULL;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu, cpufreq_string_files[which],
-					     linebuf, sizeof(linebuf))) == 0 )
+	len = sysfs_cpufreq_read_file(cpu, cpufreq_string_files[which],
+				linebuf, sizeof(linebuf));
+	if (len == 0)
 		return NULL;
 
-	if ( ( result = strdup(linebuf) ) == NULL )
+	result = strdup(linebuf);
+	if (result == NULL)
 		return NULL;
 
 	if (result[strlen(result) - 1] == '\n')
@@ -195,8 +199,8 @@ static int sysfs_cpufreq_write_one_value(unsigned int cpu,
 	if (which >= MAX_CPUFREQ_WRITE_FILES)
 		return 0;
 
-	if ( sysfs_cpufreq_write_file(cpu, cpufreq_write_files[which],
-			      new_value, len) != len )
+	if (sysfs_cpufreq_write_file(cpu, cpufreq_write_files[which],
+					new_value, len) != len)
 		return -ENODEV;
 
 	return 0;
@@ -235,11 +239,13 @@ int sysfs_get_freq_hardware_limits(unsigned int cpu,
 	return 0;
 }
 
-char * sysfs_get_freq_driver(unsigned int cpu) {
+char *sysfs_get_freq_driver(unsigned int cpu)
+{
 	return sysfs_cpufreq_get_one_string(cpu, SCALING_DRIVER);
 }
 
-struct cpufreq_policy * sysfs_get_freq_policy(unsigned int cpu) {
+struct cpufreq_policy *sysfs_get_freq_policy(unsigned int cpu)
+{
 	struct cpufreq_policy *policy;
 
 	policy = malloc(sizeof(struct cpufreq_policy));
@@ -270,27 +276,24 @@ sysfs_get_freq_available_governors(unsigned int cpu) {
 	unsigned int pos, i;
 	unsigned int len;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu, "scaling_available_governors",
-					     linebuf, sizeof(linebuf))) == 0 )
-	{
+	len = sysfs_cpufreq_read_file(cpu, "scaling_available_governors",
+				linebuf, sizeof(linebuf));
+	if (len == 0)
 		return NULL;
-	}
 
 	pos = 0;
-	for ( i = 0; i < len; i++ )
-	{
-		if ( linebuf[i] == ' ' || linebuf[i] == '\n' )
-		{
-			if ( i - pos < 2 )
+	for (i = 0; i < len; i++) {
+		if (linebuf[i] == ' ' || linebuf[i] == '\n') {
+			if (i - pos < 2)
 				continue;
-			if ( current ) {
-				current->next = malloc(sizeof *current );
-				if ( ! current->next )
+			if (current) {
+				current->next = malloc(sizeof(*current));
+				if (!current->next)
 					goto error_out;
 				current = current->next;
 			} else {
-				first = malloc( sizeof *first );
-				if ( ! first )
+				first = malloc(sizeof(*first));
+				if (!first)
 					goto error_out;
 				current = first;
 			}
@@ -298,10 +301,10 @@ sysfs_get_freq_available_governors(unsigned int cpu) {
 			current->next = NULL;
 
 			current->governor = malloc(i - pos + 1);
-			if ( ! current->governor )
+			if (!current->governor)
 				goto error_out;
 
-			memcpy( current->governor, linebuf + pos, i - pos);
+			memcpy(current->governor, linebuf + pos, i - pos);
 			current->governor[i - pos] = '\0';
 			pos = i + 1;
 		}
@@ -310,11 +313,11 @@ sysfs_get_freq_available_governors(unsigned int cpu) {
 	return first;
 
  error_out:
-	while ( first ) {
+	while (first) {
 		current = first->next;
-		if ( first->governor )
-			free( first->governor );
-		free( first );
+		if (first->governor)
+			free(first->governor);
+		free(first);
 		first = current;
 	}
 	return NULL;
@@ -330,30 +333,26 @@ sysfs_get_available_frequencies(unsigned int cpu) {
 	unsigned int pos, i;
 	unsigned int len;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu,
-					     "scaling_available_frequencies",
-					     linebuf, sizeof(linebuf))) == 0 )
-	{
+	len = sysfs_cpufreq_read_file(cpu, "scaling_available_frequencies",
+				linebuf, sizeof(linebuf));
+	if (len == 0)
 		return NULL;
-	}
 
 	pos = 0;
-	for ( i = 0; i < len; i++ )
-	{
-		if ( linebuf[i] == ' ' || linebuf[i] == '\n' )
-		{
-			if ( i - pos < 2 )
+	for (i = 0; i < len; i++) {
+		if (linebuf[i] == ' ' || linebuf[i] == '\n') {
+			if (i - pos < 2)
 				continue;
-			if ( i - pos >= SYSFS_PATH_MAX )
+			if (i - pos >= SYSFS_PATH_MAX)
 				goto error_out;
-			if ( current ) {
-				current->next = malloc(sizeof *current );
-				if ( ! current->next )
+			if (current) {
+				current->next = malloc(sizeof(*current));
+				if (!current->next)
 					goto error_out;
 				current = current->next;
 			} else {
-				first = malloc(sizeof *first );
-				if ( ! first )
+				first = malloc(sizeof(*first));
+				if (!first)
 					goto error_out;
 				current = first;
 			}
@@ -362,7 +361,7 @@ sysfs_get_available_frequencies(unsigned int cpu) {
 
 			memcpy(one_value, linebuf + pos, i - pos);
 			one_value[i - pos] = '\0';
-			if ( sscanf(one_value, "%lu", &current->frequency) != 1 )
+			if (sscanf(one_value, "%lu", &current->frequency) != 1)
 				goto error_out;
 
 			pos = i + 1;
@@ -372,7 +371,7 @@ sysfs_get_available_frequencies(unsigned int cpu) {
 	return first;
 
  error_out:
-	while ( first ) {
+	while (first) {
 		current = first->next;
 		free(first);
 		first = current;
@@ -380,8 +379,9 @@ sysfs_get_available_frequencies(unsigned int cpu) {
 	return NULL;
 }
 
-static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu,
-							 const char *file) {
+static struct cpufreq_affected_cpus *sysfs_get_cpu_list(unsigned int cpu,
+							const char *file)
+{
 	struct cpufreq_affected_cpus *first = NULL;
 	struct cpufreq_affected_cpus *current = NULL;
 	char one_value[SYSFS_PATH_MAX];
@@ -389,29 +389,25 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu,
 	unsigned int pos, i;
 	unsigned int len;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu, file, linebuf,
-					     sizeof(linebuf))) == 0 )
-	{
+	len = sysfs_cpufreq_read_file(cpu, file, linebuf, sizeof(linebuf));
+	if (len == 0)
 		return NULL;
-	}
 
 	pos = 0;
-	for ( i = 0; i < len; i++ )
-	{
-		if ( i == len || linebuf[i] == ' ' || linebuf[i] == '\n' )
-		{
-			if ( i - pos  < 1 )
+	for (i = 0; i < len; i++) {
+		if (i == len || linebuf[i] == ' ' || linebuf[i] == '\n') {
+			if (i - pos  < 1)
 				continue;
-			if ( i - pos >= SYSFS_PATH_MAX )
+			if (i - pos >= SYSFS_PATH_MAX)
 				goto error_out;
-			if ( current ) {
-				current->next = malloc(sizeof *current);
-				if ( ! current->next )
+			if (current) {
+				current->next = malloc(sizeof(*current));
+				if (!current->next)
 					goto error_out;
 				current = current->next;
 			} else {
-				first = malloc(sizeof *first);
-				if ( ! first )
+				first = malloc(sizeof(*first));
+				if (!first)
 					goto error_out;
 				current = first;
 			}
@@ -421,7 +417,7 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu,
 			memcpy(one_value, linebuf + pos, i - pos);
 			one_value[i - pos] = '\0';
 
-			if ( sscanf(one_value, "%u", &current->cpu) != 1 )
+			if (sscanf(one_value, "%u", &current->cpu) != 1)
 				goto error_out;
 
 			pos = i + 1;
@@ -439,15 +435,18 @@ static struct cpufreq_affected_cpus * sysfs_get_cpu_list(unsigned int cpu,
 	return NULL;
 }
 
-struct cpufreq_affected_cpus * sysfs_get_freq_affected_cpus(unsigned int cpu) {
+struct cpufreq_affected_cpus *sysfs_get_freq_affected_cpus(unsigned int cpu)
+{
 	return sysfs_get_cpu_list(cpu, "affected_cpus");
 }
 
-struct cpufreq_affected_cpus * sysfs_get_freq_related_cpus(unsigned int cpu) {
+struct cpufreq_affected_cpus *sysfs_get_freq_related_cpus(unsigned int cpu)
+{
 	return sysfs_get_cpu_list(cpu, "related_cpus");
 }
 
-struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long *total_time) {
+struct cpufreq_stats *sysfs_get_freq_stats(unsigned int cpu,
+					unsigned long long *total_time) {
 	struct cpufreq_stats *first = NULL;
 	struct cpufreq_stats *current = NULL;
 	char one_value[SYSFS_PATH_MAX];
@@ -455,28 +454,27 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long
 	unsigned int pos, i;
 	unsigned int len;
 
-	if ( ( len = sysfs_cpufreq_read_file(cpu, "stats/time_in_state",
-					     linebuf, sizeof(linebuf))) == 0 )
+	len = sysfs_cpufreq_read_file(cpu, "stats/time_in_state",
+				linebuf, sizeof(linebuf));
+	if (len == 0)
 		return NULL;
 
 	*total_time = 0;
 	pos = 0;
-	for ( i = 0; i < len; i++ )
-	{
-		if ( i == strlen(linebuf) || linebuf[i] == '\n' )
-		{
-			if ( i - pos < 2 )
+	for (i = 0; i < len; i++) {
+		if (i == strlen(linebuf) || linebuf[i] == '\n')	{
+			if (i - pos < 2)
 				continue;
-			if ( (i - pos) >= SYSFS_PATH_MAX )
+			if ((i - pos) >= SYSFS_PATH_MAX)
 				goto error_out;
-			if ( current ) {
-				current->next = malloc(sizeof *current );
-				if ( ! current->next )
+			if (current) {
+				current->next = malloc(sizeof(*current));
+				if (!current->next)
 					goto error_out;
 				current = current->next;
 			} else {
-				first = malloc(sizeof *first );
-				if ( ! first )
+				first = malloc(sizeof(*first));
+				if (!first)
 					goto error_out;
 				current = first;
 			}
@@ -485,7 +483,9 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long
 
 			memcpy(one_value, linebuf + pos, i - pos);
 			one_value[i - pos] = '\0';
-			if ( sscanf(one_value, "%lu %llu", &current->frequency, &current->time_in_state) != 2 )
+			if (sscanf(one_value, "%lu %llu",
+					&current->frequency,
+					&current->time_in_state) != 2)
 				goto error_out;
 
 			*total_time = *total_time + current->time_in_state;
@@ -496,7 +496,7 @@ struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long
 	return first;
 
  error_out:
-	while ( first ) {
+	while (first) {
 		current = first->next;
 		free(first);
 		first = current;
@@ -511,29 +511,29 @@ unsigned long sysfs_get_freq_transitions(unsigned int cpu)
 
 static int verify_gov(char *new_gov, char *passed_gov)
 {
-	unsigned int i, j=0;
+	unsigned int i, j = 0;
 
 	if (!passed_gov || (strlen(passed_gov) > 19))
 		return -EINVAL;
 
 	strncpy(new_gov, passed_gov, 20);
-	for (i=0;i<20;i++) {
+	for (i = 0; i < 20; i++) {
 		if (j) {
 			new_gov[i] = '\0';
 			continue;
 		}
-		if ((new_gov[i] >= 'a') && (new_gov[i] <= 'z')) {
+		if ((new_gov[i] >= 'a') && (new_gov[i] <= 'z'))
 			continue;
-		}
-		if ((new_gov[i] >= 'A') && (new_gov[i] <= 'Z')) {
+
+		if ((new_gov[i] >= 'A') && (new_gov[i] <= 'Z'))
 			continue;
-		}
-		if (new_gov[i] == '-') {
+
+		if (new_gov[i] == '-')
 			continue;
-		}
-		if (new_gov[i] == '_') {
+
+		if (new_gov[i] == '_')
 			continue;
-		}
+
 		if (new_gov[i] == '\0') {
 			j = 1;
 			continue;
@@ -627,7 +627,8 @@ int sysfs_set_freq_policy(unsigned int cpu, struct cpufreq_policy *policy)
 					     gov, strlen(gov));
 }
 
-int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency) {
+int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency)
+{
 	struct cpufreq_policy *pol = sysfs_get_freq_policy(cpu);
 	char userspace_gov[] = "userspace";
 	char freq[SYSFS_PATH_MAX];
@@ -640,7 +641,7 @@ int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency) {
 		ret = sysfs_modify_freq_policy_governor(cpu, userspace_gov);
 		if (ret) {
 			cpufreq_put_policy(pol);
-			return (ret);
+			return ret;
 		}
 	}
 
@@ -662,7 +663,7 @@ int sysfs_cpu_exists(unsigned int cpu)
 
 	snprintf(file, SYSFS_PATH_MAX, PATH_TO_CPU "cpu%u/", cpu);
 
-	if ( stat(file, &statbuf) != 0 )
+	if (stat(file, &statbuf) != 0)
 		return -ENOSYS;
 
 	return S_ISDIR(statbuf.st_mode) ? 0 : -ENOSYS;

tools/power/cpupower/lib/sysfs.h

@@ -5,17 +5,27 @@ extern unsigned int sysfs_cpu_exists(unsigned int cpu);
 extern unsigned long sysfs_get_freq_kernel(unsigned int cpu);
 extern unsigned long sysfs_get_freq_hardware(unsigned int cpu);
 extern unsigned long sysfs_get_freq_transition_latency(unsigned int cpu);
-extern int sysfs_get_freq_hardware_limits(unsigned int cpu, unsigned long *min, unsigned long *max);
-extern char * sysfs_get_freq_driver(unsigned int cpu);
-extern struct cpufreq_policy * sysfs_get_freq_policy(unsigned int cpu);
-extern struct cpufreq_available_governors * sysfs_get_freq_available_governors(unsigned int cpu);
-extern struct cpufreq_available_frequencies * sysfs_get_available_frequencies(unsigned int cpu);
-extern struct cpufreq_affected_cpus * sysfs_get_freq_affected_cpus(unsigned int cpu);
-extern struct cpufreq_affected_cpus * sysfs_get_freq_related_cpus(unsigned int cpu);
-extern struct cpufreq_stats * sysfs_get_freq_stats(unsigned int cpu, unsigned long long *total_time);
+extern int sysfs_get_freq_hardware_limits(unsigned int cpu,
+					unsigned long *min, unsigned long *max);
+extern char *sysfs_get_freq_driver(unsigned int cpu);
+extern struct cpufreq_policy *sysfs_get_freq_policy(unsigned int cpu);
+extern struct cpufreq_available_governors *sysfs_get_freq_available_governors(
+	unsigned int cpu);
+extern struct cpufreq_available_frequencies *sysfs_get_available_frequencies(
+	unsigned int cpu);
+extern struct cpufreq_affected_cpus *sysfs_get_freq_affected_cpus(
+	unsigned int cpu);
+extern struct cpufreq_affected_cpus *sysfs_get_freq_related_cpus(
+	unsigned int cpu);
+extern struct cpufreq_stats *sysfs_get_freq_stats(unsigned int cpu,
+						unsigned long long *total_time);
 extern unsigned long sysfs_get_freq_transitions(unsigned int cpu);
-extern int sysfs_set_freq_policy(unsigned int cpu, struct cpufreq_policy *policy);
-extern int sysfs_modify_freq_policy_min(unsigned int cpu, unsigned long min_freq);
-extern int sysfs_modify_freq_policy_max(unsigned int cpu, unsigned long max_freq);
+extern int sysfs_set_freq_policy(unsigned int cpu,
+				struct cpufreq_policy *policy);
+extern int sysfs_modify_freq_policy_min(unsigned int cpu,
+					unsigned long min_freq);
+extern int sysfs_modify_freq_policy_max(unsigned int cpu,
+					unsigned long max_freq);
 extern int sysfs_modify_freq_policy_governor(unsigned int cpu, char *governor);
-extern int sysfs_set_frequency(unsigned int cpu, unsigned long target_frequency);
+extern int sysfs_set_frequency(unsigned int cpu,
+			unsigned long target_frequency);