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Subject[PATCH 27/36] video: backlight: convert class code to use dev_groups
Date
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>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

Richard, feel free to take this through your tree, or ACK it and I can
take it through mine.

drivers/video/backlight/backlight.c | 44 ++++++++++++++++++++-----------------
1 file changed, 24 insertions(+), 20 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 3fccb6d3..94a403a9 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;
}
--
1.8.3.rc0.20.gb99dd2e


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