[CPUFREQ] Only set sampling_rate_max deprecated, sampling_rate_min is useful

Update the documentation accordingly.
Cleanup and use printk_once.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>

2 files changed, 4 insertions, 31 deletions

diff --git a/drivers/cpufreq/cpufreq_conservative.c b/drivers/cpufreq/cpufreq_conservative.c
index 06bfe1c572cd..7fc58af748b4 100644
--- a/drivers/cpufreq/cpufreq_conservative.c
+++ b/drivers/cpufreq/cpufreq_conservative.c
@@ -167,26 +167,13 @@ static struct notifier_block dbs_cpufreq_notifier_block = {
 /************************** sysfs interface ************************/
 static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
 {
-        static int print_once;
-
-        if (!print_once) {
-                printk(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
-                       "sysfs file is deprecated - used by: %s\n",
-                       current->comm);
-                print_once = 1;
-        }
+        printk_once(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
+                    "sysfs file is deprecated - used by: %s\n", current->comm);
         return sprintf(buf, "%u\n", -1U);
 }
 
 static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
 {
-        static int print_once;
-
-        if (!print_once) {
-                printk(KERN_INFO "CPUFREQ: conservative sampling_rate_max "
-                       "sysfs file is deprecated - used by: %s\n", current->comm);
-                print_once = 1;
-        }
         return sprintf(buf, "%u\n", min_sampling_rate);
 }
 
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index a235114c3d85..1911d1729353 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -205,27 +205,13 @@ static void ondemand_powersave_bias_init(void)
 /************************** sysfs interface ************************/
 static ssize_t show_sampling_rate_max(struct cpufreq_policy *policy, char *buf)
 {
-        static int print_once;
-
-        if (!print_once) {
-                printk(KERN_INFO "CPUFREQ: ondemand sampling_rate_max "
-                       "sysfs file is deprecated - used by: %s\n",
-                       current->comm);
-                print_once = 1;
-        }
+        printk_once(KERN_INFO "CPUFREQ: ondemand sampling_rate_max "
+               "sysfs file is deprecated - used by: %s\n", current->comm);
         return sprintf(buf, "%u\n", -1U);
 }
 
 static ssize_t show_sampling_rate_min(struct cpufreq_policy *policy, char *buf)
 {
-        static int print_once;
-
-        if (!print_once) {
-                printk(KERN_INFO "CPUFREQ: ondemand sampling_rate_min "
-                       "sysfs file is deprecated - used by: %s\n",
-                       current->comm);
-                print_once = 1;
-        }
         return sprintf(buf, "%u\n", min_sampling_rate);
 }