devfreq: convert devfreq_class to use dev_groups

The dev_attrs field of struct class is going away soon, dev_groups
should be used instead.  This converts the devfreq_class code to use the
correct field.

Cc: MyungJoo Ham <myungjoo.ham@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 44 insertions, 34 deletions

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index e94e619fe050..c99c00d35d34 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -703,7 +703,7 @@ err_out:
 }
 EXPORT_SYMBOL(devfreq_remove_governor);
 
-static ssize_t show_governor(struct device *dev,
+static ssize_t governor_show(struct device *dev,
                              struct device_attribute *attr, char *buf)
 {
         if (!to_devfreq(dev)->governor)
@@ -712,7 +712,7 @@ static ssize_t show_governor(struct device *dev,
         return sprintf(buf, "%s\n", to_devfreq(dev)->governor->name);
 }
 
-static ssize_t store_governor(struct device *dev, struct device_attribute *attr,
+static ssize_t governor_store(struct device *dev, struct device_attribute *attr,
                               const char *buf, size_t count)
 {
         struct devfreq *df = to_devfreq(dev);
@@ -754,9 +754,11 @@ out:
                 ret = count;
         return ret;
 }
-static ssize_t show_available_governors(struct device *d,
-                                    struct device_attribute *attr,
-                                    char *buf)
+static DEVICE_ATTR_RW(governor);
+
+static ssize_t available_governors_show(struct device *d,
+                                        struct device_attribute *attr,
+                                        char *buf)
 {
         struct devfreq_governor *tmp_governor;
         ssize_t count = 0;
@@ -775,9 +777,10 @@ static ssize_t show_available_governors(struct device *d,
 
         return count;
 }
+static DEVICE_ATTR_RO(available_governors);
 
-static ssize_t show_freq(struct device *dev,
-                         struct device_attribute *attr, char *buf)
+static ssize_t cur_freq_show(struct device *dev, struct device_attribute *attr,
+                             char *buf)
 {
         unsigned long freq;
         struct devfreq *devfreq = to_devfreq(dev);
@@ -788,20 +791,22 @@ static ssize_t show_freq(struct device *dev,
 
         return sprintf(buf, "%lu\n", devfreq->previous_freq);
 }
+static DEVICE_ATTR_RO(cur_freq);
 
-static ssize_t show_target_freq(struct device *dev,
-                        struct device_attribute *attr, char *buf)
+static ssize_t target_freq_show(struct device *dev,
+                                struct device_attribute *attr, char *buf)
 {
         return sprintf(buf, "%lu\n", to_devfreq(dev)->previous_freq);
 }
+static DEVICE_ATTR_RO(target_freq);
 
-static ssize_t show_polling_interval(struct device *dev,
+static ssize_t polling_interval_show(struct device *dev,
                                      struct device_attribute *attr, char *buf)
 {
         return sprintf(buf, "%d\n", to_devfreq(dev)->profile->polling_ms);
 }
 
-static ssize_t store_polling_interval(struct device *dev,
+static ssize_t polling_interval_store(struct device *dev,
                                       struct device_attribute *attr,
                                       const char *buf, size_t count)
 {
@@ -821,8 +826,9 @@ static ssize_t store_polling_interval(struct device *dev,
 
         return ret;
 }
+static DEVICE_ATTR_RW(polling_interval);
 
-static ssize_t store_min_freq(struct device *dev, struct device_attribute *attr,
+static ssize_t min_freq_store(struct device *dev, struct device_attribute *attr,
                               const char *buf, size_t count)
 {
         struct devfreq *df = to_devfreq(dev);
@@ -849,13 +855,13 @@ unlock:
         return ret;
 }
 
-static ssize_t show_min_freq(struct device *dev, struct device_attribute *attr,
+static ssize_t min_freq_show(struct device *dev, struct device_attribute *attr,
                              char *buf)
 {
         return sprintf(buf, "%lu\n", to_devfreq(dev)->min_freq);
 }
 
-static ssize_t store_max_freq(struct device *dev, struct device_attribute *attr,
+static ssize_t max_freq_store(struct device *dev, struct device_attribute *attr,
                               const char *buf, size_t count)
 {
         struct devfreq *df = to_devfreq(dev);
@@ -881,16 +887,18 @@ unlock:
         mutex_unlock(&df->lock);
         return ret;
 }
+static DEVICE_ATTR_RW(min_freq);
 
-static ssize_t show_max_freq(struct device *dev, struct device_attribute *attr,
+static ssize_t max_freq_show(struct device *dev, struct device_attribute *attr,
                              char *buf)
 {
         return sprintf(buf, "%lu\n", to_devfreq(dev)->max_freq);
 }
+static DEVICE_ATTR_RW(max_freq);
 
-static ssize_t show_available_freqs(struct device *d,
-                                    struct device_attribute *attr,
-                                    char *buf)
+static ssize_t available_frequencies_show(struct device *d,
+                                          struct device_attribute *attr,
+                                          char *buf)
 {
         struct devfreq *df = to_devfreq(d);
         struct device *dev = df->dev.parent;
@@ -918,9 +926,10 @@ static ssize_t show_available_freqs(struct device *d,
 
         return count;
 }
+static DEVICE_ATTR_RO(available_frequencies);
 
-static ssize_t show_trans_table(struct device *dev, struct device_attribute *attr,
-                                char *buf)
+static ssize_t trans_stat_show(struct device *dev,
+                               struct device_attribute *attr, char *buf)
 {
         struct devfreq *devfreq = to_devfreq(dev);
         ssize_t len;
@@ -959,20 +968,21 @@ static ssize_t show_trans_table(struct device *dev, struct device_attribute *att
                                         devfreq->total_trans);
         return len;
 }
-
-static struct device_attribute devfreq_attrs[] = {
-        __ATTR(governor, S_IRUGO | S_IWUSR, show_governor, store_governor),
-        __ATTR(available_governors, S_IRUGO, show_available_governors, NULL),
-        __ATTR(cur_freq, S_IRUGO, show_freq, NULL),
-        __ATTR(available_frequencies, S_IRUGO, show_available_freqs, NULL),
-        __ATTR(target_freq, S_IRUGO, show_target_freq, NULL),
-        __ATTR(polling_interval, S_IRUGO | S_IWUSR, show_polling_interval,
-               store_polling_interval),
-        __ATTR(min_freq, S_IRUGO | S_IWUSR, show_min_freq, store_min_freq),
-        __ATTR(max_freq, S_IRUGO | S_IWUSR, show_max_freq, store_max_freq),
-        __ATTR(trans_stat, S_IRUGO, show_trans_table, NULL),
-        { },
+static DEVICE_ATTR_RO(trans_stat);
+
+static struct attribute *devfreq_attrs[] = {
+        &dev_attr_governor.attr,
+        &dev_attr_available_governors.attr,
+        &dev_attr_cur_freq.attr,
+        &dev_attr_available_frequencies.attr,
+        &dev_attr_target_freq.attr,
+        &dev_attr_polling_interval.attr,
+        &dev_attr_min_freq.attr,
+        &dev_attr_max_freq.attr,
+        &dev_attr_trans_stat.attr,
+        NULL,
 };
+ATTRIBUTE_GROUPS(devfreq);
 
 static int __init devfreq_init(void)
 {
@@ -988,7 +998,7 @@ static int __init devfreq_init(void)
                 pr_err("%s: couldn't create workqueue\n", __FILE__);
                 return PTR_ERR(devfreq_wq);
         }
-        devfreq_class->dev_attrs = devfreq_attrs;
+        devfreq_class->dev_groups = devfreq_groups;
 
         return 0;
 }