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-rw-r--r--include/linux/backlight.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h
index 0f5f57858a23..8c4f884db6b4 100644
--- a/include/linux/backlight.h
+++ b/include/linux/backlight.h
@@ -36,18 +36,18 @@ struct backlight_device;
36struct fb_info; 36struct fb_info;
37 37
38struct backlight_ops { 38struct backlight_ops {
39 unsigned int options; 39 const unsigned int options;
40 40
41#define BL_CORE_SUSPENDRESUME (1 << 0) 41#define BL_CORE_SUSPENDRESUME (1 << 0)
42 42
43 /* Notify the backlight driver some property has changed */ 43 /* Notify the backlight driver some property has changed */
44 int (*update_status)(struct backlight_device *); 44 int (* const update_status)(struct backlight_device *);
45 /* Return the current backlight brightness (accounting for power, 45 /* Return the current backlight brightness (accounting for power,
46 fb_blank etc.) */ 46 fb_blank etc.) */
47 int (*get_brightness)(struct backlight_device *); 47 int (* const get_brightness)(struct backlight_device *);
48 /* Check if given framebuffer device is the one bound to this backlight; 48 /* Check if given framebuffer device is the one bound to this backlight;
49 return 0 if not, !=0 if it is. If NULL, backlight always matches the fb. */ 49 return 0 if not, !=0 if it is. If NULL, backlight always matches the fb. */
50 int (*check_fb)(struct fb_info *); 50 int (* const check_fb)(struct fb_info *);
51}; 51};
52 52
53/* This structure defines all the properties of a backlight */ 53/* This structure defines all the properties of a backlight */
@@ -86,7 +86,7 @@ struct backlight_device {
86 registered this device has been unloaded, and if class_get_devdata() 86 registered this device has been unloaded, and if class_get_devdata()
87 points to something in the body of that driver, it is also invalid. */ 87 points to something in the body of that driver, it is also invalid. */
88 struct mutex ops_lock; 88 struct mutex ops_lock;
89 struct backlight_ops *ops; 89 const struct backlight_ops *ops;
90 90
91 /* The framebuffer notifier block */ 91 /* The framebuffer notifier block */
92 struct notifier_block fb_notif; 92 struct notifier_block fb_notif;
@@ -103,7 +103,7 @@ static inline void backlight_update_status(struct backlight_device *bd)
103} 103}
104 104
105extern struct backlight_device *backlight_device_register(const char *name, 105extern struct backlight_device *backlight_device_register(const char *name,
106 struct device *dev, void *devdata, struct backlight_ops *ops); 106 struct device *dev, void *devdata, const struct backlight_ops *ops);
107extern void backlight_device_unregister(struct backlight_device *bd); 107extern void backlight_device_unregister(struct backlight_device *bd);
108extern void backlight_force_update(struct backlight_device *bd, 108extern void backlight_force_update(struct backlight_device *bd,
109 enum backlight_update_reason reason); 109 enum backlight_update_reason reason);