video: backlight: convert class code to use dev_groups

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

Cc: Richard Purdie <rpurdie@rpsys.net>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 24 insertions, 20 deletions

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 3fccb6d3c8c3..94a403a9717a 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -103,16 +103,16 @@ static void backlight_generate_event(struct backlight_device *bd,
         sysfs_notify(&bd->dev.kobj, NULL, "actual_brightness");
 }
 
-static ssize_t backlight_show_power(struct device *dev,
-                struct device_attribute *attr, char *buf)
+static ssize_t bl_power_show(struct device *dev, struct device_attribute *attr,
+                char *buf)
 {
         struct backlight_device *bd = to_backlight_device(dev);
 
         return sprintf(buf, "%d\n", bd->props.power);
 }
 
-static ssize_t backlight_store_power(struct device *dev,
-                struct device_attribute *attr, const char *buf, size_t count)
+static ssize_t bl_power_store(struct device *dev, struct device_attribute *attr,
+                const char *buf, size_t count)
 {
         int rc;
         struct backlight_device *bd = to_backlight_device(dev);
@@ -136,8 +136,9 @@ static ssize_t backlight_store_power(struct device *dev,
 
         return rc;
 }
+static DEVICE_ATTR_RW(bl_power);
 
-static ssize_t backlight_show_brightness(struct device *dev,
+static ssize_t brightness_show(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
         struct backlight_device *bd = to_backlight_device(dev);
@@ -145,7 +146,7 @@ static ssize_t backlight_show_brightness(struct device *dev,
         return sprintf(buf, "%d\n", bd->props.brightness);
 }
 
-static ssize_t backlight_store_brightness(struct device *dev,
+static ssize_t brightness_store(struct device *dev,
                 struct device_attribute *attr, const char *buf, size_t count)
 {
         int rc;
@@ -175,24 +176,27 @@ static ssize_t backlight_store_brightness(struct device *dev,
 
         return rc;
 }
+static DEVICE_ATTR_RW(brightness);
 
-static ssize_t backlight_show_type(struct device *dev,
-                struct device_attribute *attr, char *buf)
+static ssize_t type_show(struct device *dev, struct device_attribute *attr,
+                char *buf)
 {
         struct backlight_device *bd = to_backlight_device(dev);
 
         return sprintf(buf, "%s\n", backlight_types[bd->props.type]);
 }
+static DEVICE_ATTR_RO(type);
 
-static ssize_t backlight_show_max_brightness(struct device *dev,
+static ssize_t max_brightness_show(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
         struct backlight_device *bd = to_backlight_device(dev);
 
         return sprintf(buf, "%d\n", bd->props.max_brightness);
 }
+static DEVICE_ATTR_RO(max_brightness);
 
-static ssize_t backlight_show_actual_brightness(struct device *dev,
+static ssize_t actual_brightness_show(struct device *dev,
                 struct device_attribute *attr, char *buf)
 {
         int rc = -ENXIO;
@@ -205,6 +209,7 @@ static ssize_t backlight_show_actual_brightness(struct device *dev,
 
         return rc;
 }
+static DEVICE_ATTR_RO(actual_brightness);
 
 static struct class *backlight_class;
 
@@ -247,16 +252,15 @@ static void bl_device_release(struct device *dev)
         kfree(bd);
 }
 
-static struct device_attribute bl_device_attributes[] = {
-        __ATTR(bl_power, 0644, backlight_show_power, backlight_store_power),
-        __ATTR(brightness, 0644, backlight_show_brightness,
-                     backlight_store_brightness),
-        __ATTR(actual_brightness, 0444, backlight_show_actual_brightness,
-                     NULL),
-        __ATTR(max_brightness, 0444, backlight_show_max_brightness, NULL),
-        __ATTR(type, 0444, backlight_show_type, NULL),
-        __ATTR_NULL,
+static struct attribute *bl_device_attrs[] = {
+        &dev_attr_bl_power.attr,
+        &dev_attr_brightness.attr,
+        &dev_attr_actual_brightness.attr,
+        &dev_attr_max_brightness.attr,
+        &dev_attr_type.attr,
+        NULL,
 };
+ATTRIBUTE_GROUPS(bl_device);
 
 /**
  * backlight_force_update - tell the backlight subsystem that hardware state
@@ -493,7 +497,7 @@ static int __init backlight_class_init(void)
                 return PTR_ERR(backlight_class);
         }
 
-        backlight_class->dev_attrs = bl_device_attributes;
+        backlight_class->dev_groups = bl_device_groups;
         backlight_class->pm = &backlight_class_dev_pm_ops;
         return 0;
 }