Merge drm/drm-next into drm-misc-next

Let's start the new release cycle.

Signed-off-by: Maxime Ripard <mripard@kernel.org>

49 files changed, 157 insertions, 367 deletions

diff --git a/drivers/video/backlight/aat2870_bl.c b/drivers/video/backlight/aat2870_bl.c
index 81fde3abb92c..b4c3354a1a8a 100644
--- a/drivers/video/backlight/aat2870_bl.c
+++ b/drivers/video/backlight/aat2870_bl.c
@@ -12,7 +12,6 @@
 #include <linux/platform_device.h>
 #include <linux/mutex.h>
 #include <linux/delay.h>
-#include <linux/fb.h>
 #include <linux/backlight.h>
 #include <linux/mfd/aat2870.h>
 
@@ -90,15 +89,9 @@ static int aat2870_bl_update_status(struct backlight_device *bd)
 	return 0;
 }
 
-static int aat2870_bl_check_fb(struct backlight_device *bd, struct fb_info *fi)
-{
-	return 1;
-}
-
 static const struct backlight_ops aat2870_bl_ops = {
 	.options = BL_CORE_SUSPENDRESUME,
 	.update_status = aat2870_bl_update_status,
-	.check_fb = aat2870_bl_check_fb,
 };
 
 static int aat2870_bl_probe(struct platform_device *pdev)
diff --git a/drivers/video/backlight/ams369fg06.c b/drivers/video/backlight/ams369fg06.c
index 522dd81110b8..57ec205d2bd2 100644
--- a/drivers/video/backlight/ams369fg06.c
+++ b/drivers/video/backlight/ams369fg06.c
@@ -427,7 +427,7 @@ static int ams369fg06_set_brightness(struct backlight_device *bd)
 	return ret;
 }
 
-static struct lcd_ops ams369fg06_lcd_ops = {
+static const struct lcd_ops ams369fg06_lcd_ops = {
 	.get_power = ams369fg06_get_power,
 	.set_power = ams369fg06_set_power,
 };
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 86e1cdc8e369..a82934694d05 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -98,7 +98,9 @@ static int fb_notifier_callback(struct notifier_block *self,
 {
 	struct backlight_device *bd;
 	struct fb_event *evdata = data;
-	int node = evdata->info->node;
+	struct fb_info *info = evdata->info;
+	struct backlight_device *fb_bd = fb_bl_device(info);
+	int node = info->node;
 	int fb_blank = 0;
 
 	/* If we aren't interested in this event, skip it immediately ... */
@@ -110,7 +112,9 @@ static int fb_notifier_callback(struct notifier_block *self,
 
 	if (!bd->ops)
 		goto out;
-	if (bd->ops->check_fb && !bd->ops->check_fb(bd, evdata->info))
+	if (bd->ops->controls_device && !bd->ops->controls_device(bd, info->device))
+		goto out;
+	if (fb_bd && fb_bd != bd)
 		goto out;
 
 	fb_blank = *(int *)evdata->data;
@@ -118,14 +122,12 @@ static int fb_notifier_callback(struct notifier_block *self,
 		bd->fb_bl_on[node] = true;
 		if (!bd->use_count++) {
 			bd->props.state &= ~BL_CORE_FBBLANK;
-			bd->props.fb_blank = FB_BLANK_UNBLANK;
 			backlight_update_status(bd);
 		}
 	} else if (fb_blank != FB_BLANK_UNBLANK && bd->fb_bl_on[node]) {
 		bd->fb_bl_on[node] = false;
 		if (!(--bd->use_count)) {
 			bd->props.state |= BL_CORE_FBBLANK;
-			bd->props.fb_blank = fb_blank;
 			backlight_update_status(bd);
 		}
 	}
@@ -317,8 +319,6 @@ static ssize_t scale_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(scale);
 
-static struct class *backlight_class;
-
 #ifdef CONFIG_PM_SLEEP
 static int backlight_suspend(struct device *dev)
 {
@@ -369,6 +369,12 @@ static struct attribute *bl_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(bl_device);
 
+static const struct class backlight_class = {
+	.name = "backlight",
+	.dev_groups = bl_device_groups,
+	.pm = &backlight_class_dev_pm_ops,
+};
+
 /**
  * backlight_force_update - tell the backlight subsystem that hardware state
  *   has changed
@@ -418,7 +424,7 @@ struct backlight_device *backlight_device_register(const char *name,
 	mutex_init(&new_bd->update_lock);
 	mutex_init(&new_bd->ops_lock);
 
-	new_bd->dev.class = backlight_class;
+	new_bd->dev.class = &backlight_class;
 	new_bd->dev.parent = parent;
 	new_bd->dev.release = bl_device_release;
 	dev_set_name(&new_bd->dev, "%s", name);
@@ -510,7 +516,7 @@ struct backlight_device *backlight_device_get_by_name(const char *name)
 {
 	struct device *dev;
 
-	dev = class_find_device_by_name(backlight_class, name);
+	dev = class_find_device_by_name(&backlight_class, name);
 
 	return dev ? to_backlight_device(dev) : NULL;
 }
@@ -678,7 +684,7 @@ struct backlight_device *of_find_backlight_by_node(struct device_node *node)
 {
 	struct device *dev;
 
-	dev = class_find_device(backlight_class, NULL, node, of_parent_match);
+	dev = class_find_device(&backlight_class, NULL, node, of_parent_match);
 
 	return dev ? to_backlight_device(dev) : NULL;
 }
@@ -746,20 +752,19 @@ EXPORT_SYMBOL(devm_of_find_backlight);
 
 static void __exit backlight_class_exit(void)
 {
-	class_destroy(backlight_class);
+	class_unregister(&backlight_class);
 }
 
 static int __init backlight_class_init(void)
 {
-	backlight_class = class_create("backlight");
-	if (IS_ERR(backlight_class)) {
-		pr_warn("Unable to create backlight class; errno = %ld\n",
-			PTR_ERR(backlight_class));
-		return PTR_ERR(backlight_class);
+	int ret;
+
+	ret = class_register(&backlight_class);
+	if (ret) {
+		pr_warn("Unable to create backlight class; errno = %d\n", ret);
+		return ret;
 	}
 
-	backlight_class->dev_groups = bl_device_groups;
-	backlight_class->pm = &backlight_class_dev_pm_ops;
 	INIT_LIST_HEAD(&backlight_dev_list);
 	mutex_init(&backlight_dev_list_mutex);
 	BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier);
diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
index b1e7126380ef..6be2c67ba85c 100644
--- a/drivers/video/backlight/bd6107.c
+++ b/drivers/video/backlight/bd6107.c
@@ -99,18 +99,18 @@ static int bd6107_backlight_update_status(struct backlight_device *backlight)
 	return 0;
 }
 
-static int bd6107_backlight_check_fb(struct backlight_device *backlight,
-				       struct fb_info *info)
+static bool bd6107_backlight_controls_device(struct backlight_device *backlight,
+					     struct device *display_dev)
 {
 	struct bd6107 *bd = bl_get_data(backlight);
 
-	return !bd->pdata->dev || bd->pdata->dev == info->device;
+	return !bd->pdata->dev || bd->pdata->dev == display_dev;
 }
 
 static const struct backlight_ops bd6107_backlight_ops = {
-	.options	= BL_CORE_SUSPENDRESUME,
-	.update_status	= bd6107_backlight_update_status,
-	.check_fb	= bd6107_backlight_check_fb,
+	.options	 = BL_CORE_SUSPENDRESUME,
+	.update_status	 = bd6107_backlight_update_status,
+	.controls_device = bd6107_backlight_controls_device,
 };
 
 static int bd6107_probe(struct i2c_client *client)
diff --git a/drivers/video/backlight/corgi_lcd.c b/drivers/video/backlight/corgi_lcd.c
index dd765098ad98..aad1680c9075 100644
--- a/drivers/video/backlight/corgi_lcd.c
+++ b/drivers/video/backlight/corgi_lcd.c
@@ -380,7 +380,7 @@ static int corgi_lcd_get_power(struct lcd_device *ld)
 	return lcd->power;
 }
 
-static struct lcd_ops corgi_lcd_ops = {
+static const struct lcd_ops corgi_lcd_ops = {
 	.get_power	= corgi_lcd_get_power,
 	.set_power	= corgi_lcd_set_power,
 	.set_mode	= corgi_lcd_set_mode,
diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c
index e0c8c2a3f5dc..4476c317ce29 100644
--- a/drivers/video/backlight/gpio_backlight.c
+++ b/drivers/video/backlight/gpio_backlight.c
@@ -30,18 +30,18 @@ static int gpio_backlight_update_status(struct backlight_device *bl)
 	return 0;
 }
 
-static int gpio_backlight_check_fb(struct backlight_device *bl,
-				   struct fb_info *info)
+static bool gpio_backlight_controls_device(struct backlight_device *bl,
+					   struct device *display_dev)
 {
 	struct gpio_backlight *gbl = bl_get_data(bl);
 
-	return !gbl->dev || gbl->dev == info->device;
+	return !gbl->dev || gbl->dev == display_dev;
 }
 
 static const struct backlight_ops gpio_backlight_ops = {
-	.options	= BL_CORE_SUSPENDRESUME,
-	.update_status	= gpio_backlight_update_status,
-	.check_fb	= gpio_backlight_check_fb,
+	.options	 = BL_CORE_SUSPENDRESUME,
+	.update_status	 = gpio_backlight_update_status,
+	.controls_device = gpio_backlight_controls_device,
 };
 
 static int gpio_backlight_probe(struct platform_device *pdev)
diff --git a/drivers/video/backlight/hx8357.c b/drivers/video/backlight/hx8357.c
index 339d9128fbde..cdd7b7686723 100644
--- a/drivers/video/backlight/hx8357.c
+++ b/drivers/video/backlight/hx8357.c
@@ -559,7 +559,7 @@ static int hx8357_get_power(struct lcd_device *lcdev)
 	return lcd->state;
 }
 
-static struct lcd_ops hx8357_ops = {
+static const struct lcd_ops hx8357_ops = {
 	.set_power	= hx8357_set_power,
 	.get_power	= hx8357_get_power,
 };
diff --git a/drivers/video/backlight/ili922x.c b/drivers/video/backlight/ili922x.c
index c8e0e655dc86..7683e209ad6b 100644
--- a/drivers/video/backlight/ili922x.c
+++ b/drivers/video/backlight/ili922x.c
@@ -472,7 +472,7 @@ static int ili922x_get_power(struct lcd_device *ld)
 	return ili->power;
 }
 
-static struct lcd_ops ili922x_ops = {
+static const struct lcd_ops ili922x_ops = {
 	.get_power = ili922x_get_power,
 	.set_power = ili922x_set_power,
 };
diff --git a/drivers/video/backlight/ili9320.c b/drivers/video/backlight/ili9320.c
index 2acd2708f8ca..3e318d1891b6 100644
--- a/drivers/video/backlight/ili9320.c
+++ b/drivers/video/backlight/ili9320.c
@@ -161,7 +161,7 @@ static int ili9320_get_power(struct lcd_device *ld)
 	return lcd->power;
 }
 
-static struct lcd_ops ili9320_ops = {
+static const struct lcd_ops ili9320_ops = {
 	.get_power	= ili9320_get_power,
 	.set_power	= ili9320_set_power,
 };
diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
index 6796a7c2db25..5c64fa61e810 100644
--- a/drivers/video/backlight/jornada720_lcd.c
+++ b/drivers/video/backlight/jornada720_lcd.c
@@ -81,7 +81,7 @@ static int jornada_lcd_set_power(struct lcd_device *ld, int power)
 	return 0;
 }
 
-static struct lcd_ops jornada_lcd_props = {
+static const struct lcd_ops jornada_lcd_props = {
 	.get_contrast = jornada_lcd_get_contrast,
 	.set_contrast = jornada_lcd_set_contrast,
 	.get_power = jornada_lcd_get_power,
diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
index bd5137ee203b..dd0874f8c7ff 100644
--- a/drivers/video/backlight/l4f00242t03.c
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -158,7 +158,7 @@ static int l4f00242t03_lcd_power_set(struct lcd_device *ld, int power)
 	return 0;
 }
 
-static struct lcd_ops l4f_ops = {
+static const struct lcd_ops l4f_ops = {
 	.set_power	= l4f00242t03_lcd_power_set,
 	.get_power	= l4f00242t03_lcd_power_get,
 };
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 77c5cb2a44e2..ceec90ca758b 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -159,8 +159,6 @@ static ssize_t max_contrast_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(max_contrast);
 
-static struct class *lcd_class;
-
 static void lcd_device_release(struct device *dev)
 {
 	struct lcd_device *ld = to_lcd_device(dev);
@@ -175,6 +173,11 @@ static struct attribute *lcd_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(lcd_device);
 
+static const struct class lcd_class = {
+	.name = "lcd",
+	.dev_groups = lcd_device_groups,
+};
+
 /**
  * lcd_device_register - register a new object of lcd_device class.
  * @name: the name of the new object(must be the same as the name of the
@@ -188,7 +191,7 @@ ATTRIBUTE_GROUPS(lcd_device);
  * or a pointer to the newly allocated device.
  */
 struct lcd_device *lcd_device_register(const char *name, struct device *parent,
-		void *devdata, struct lcd_ops *ops)
+		void *devdata, const struct lcd_ops *ops)
 {
 	struct lcd_device *new_ld;
 	int rc;
@@ -202,7 +205,7 @@ struct lcd_device *lcd_device_register(const char *name, struct device *parent,
 	mutex_init(&new_ld->ops_lock);
 	mutex_init(&new_ld->update_lock);
 
-	new_ld->dev.class = lcd_class;
+	new_ld->dev.class = &lcd_class;
 	new_ld->dev.parent = parent;
 	new_ld->dev.release = lcd_device_release;
 	dev_set_name(&new_ld->dev, "%s", name);
@@ -276,7 +279,7 @@ static int devm_lcd_device_match(struct device *dev, void *res, void *data)
  */
 struct lcd_device *devm_lcd_device_register(struct device *dev,
 		const char *name, struct device *parent,
-		void *devdata, struct lcd_ops *ops)
+		void *devdata, const struct lcd_ops *ops)
 {
 	struct lcd_device **ptr, *lcd;
 
@@ -318,19 +321,19 @@ EXPORT_SYMBOL(devm_lcd_device_unregister);
 
 static void __exit lcd_class_exit(void)
 {
-	class_destroy(lcd_class);
+	class_unregister(&lcd_class);
 }
 
 static int __init lcd_class_init(void)
 {
-	lcd_class = class_create("lcd");
-	if (IS_ERR(lcd_class)) {
-		pr_warn("Unable to create backlight class; errno = %ld\n",
-			PTR_ERR(lcd_class));
-		return PTR_ERR(lcd_class);
+	int ret;
+
+	ret = class_register(&lcd_class);
+	if (ret) {
+		pr_warn("Unable to create backlight class; errno = %d\n", ret);
+		return ret;
 	}
 
-	lcd_class->dev_groups = lcd_device_groups;
 	return 0;
 }
 
diff --git a/drivers/video/backlight/lms283gf05.c b/drivers/video/backlight/lms283gf05.c
index 36856962ed83..a65490e83d3d 100644
--- a/drivers/video/backlight/lms283gf05.c
+++ b/drivers/video/backlight/lms283gf05.c
@@ -139,7 +139,7 @@ static int lms283gf05_power_set(struct lcd_device *ld, int power)
 	return 0;
 }
 
-static struct lcd_ops lms_ops = {
+static const struct lcd_ops lms_ops = {
 	.set_power	= lms283gf05_power_set,
 	.get_power	= NULL,
 };
diff --git a/drivers/video/backlight/lms501kf03.c b/drivers/video/backlight/lms501kf03.c
index 5c46df8022bf..8aebe0af3391 100644
--- a/drivers/video/backlight/lms501kf03.c
+++ b/drivers/video/backlight/lms501kf03.c
@@ -304,7 +304,7 @@ static int lms501kf03_set_power(struct lcd_device *ld, int power)
 	return lms501kf03_power(lcd, power);
 }
 
-static struct lcd_ops lms501kf03_lcd_ops = {
+static const struct lcd_ops lms501kf03_lcd_ops = {
 	.get_power = lms501kf03_get_power,
 	.set_power = lms501kf03_set_power,
 };
diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c
index 31f97230ee50..0b7663519fa5 100644
--- a/drivers/video/backlight/lp8788_bl.c
+++ b/drivers/video/backlight/lp8788_bl.c
@@ -12,7 +12,6 @@
 #include <linux/mfd/lp8788.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/pwm.h>
 #include <linux/slab.h>
 
 /* Register address */
@@ -31,149 +30,40 @@
 #define MAX_BRIGHTNESS			127
 #define DEFAULT_BL_NAME			"lcd-backlight"
 
-struct lp8788_bl_config {
-	enum lp8788_bl_ctrl_mode bl_mode;
-	enum lp8788_bl_dim_mode dim_mode;
-	enum lp8788_bl_full_scale_current full_scale;
-	enum lp8788_bl_ramp_step rise_time;
-	enum lp8788_bl_ramp_step fall_time;
-	enum pwm_polarity pwm_pol;
-};
-
 struct lp8788_bl {
 	struct lp8788 *lp;
 	struct backlight_device *bl_dev;
-	struct lp8788_backlight_platform_data *pdata;
-	enum lp8788_bl_ctrl_mode mode;
-	struct pwm_device *pwm;
-};
-
-static struct lp8788_bl_config default_bl_config = {
-	.bl_mode    = LP8788_BL_REGISTER_ONLY,
-	.dim_mode   = LP8788_DIM_EXPONENTIAL,
-	.full_scale = LP8788_FULLSCALE_1900uA,
-	.rise_time  = LP8788_RAMP_8192us,
-	.fall_time  = LP8788_RAMP_8192us,
-	.pwm_pol    = PWM_POLARITY_NORMAL,
 };
 
-static inline bool is_brightness_ctrl_by_pwm(enum lp8788_bl_ctrl_mode mode)
-{
-	return mode == LP8788_BL_COMB_PWM_BASED;
-}
-
-static inline bool is_brightness_ctrl_by_register(enum lp8788_bl_ctrl_mode mode)
-{
-	return mode == LP8788_BL_REGISTER_ONLY ||
-		mode == LP8788_BL_COMB_REGISTER_BASED;
-}
-
 static int lp8788_backlight_configure(struct lp8788_bl *bl)
 {
-	struct lp8788_backlight_platform_data *pdata = bl->pdata;
-	struct lp8788_bl_config *cfg = &default_bl_config;
 	int ret;
 	u8 val;
 
-	/*
-	 * Update chip configuration if platform data exists,
-	 * otherwise use the default settings.
-	 */
-	if (pdata) {
-		cfg->bl_mode    = pdata->bl_mode;
-		cfg->dim_mode   = pdata->dim_mode;
-		cfg->full_scale = pdata->full_scale;
-		cfg->rise_time  = pdata->rise_time;
-		cfg->fall_time  = pdata->fall_time;
-		cfg->pwm_pol    = pdata->pwm_pol;
-	}
-
 	/* Brightness ramp up/down */
-	val = (cfg->rise_time << LP8788_BL_RAMP_RISE_SHIFT) | cfg->fall_time;
+	val = (LP8788_RAMP_8192us << LP8788_BL_RAMP_RISE_SHIFT) | LP8788_RAMP_8192us;
 	ret = lp8788_write_byte(bl->lp, LP8788_BL_RAMP, val);
 	if (ret)
 		return ret;
 
 	/* Fullscale current setting */
-	val = (cfg->full_scale << LP8788_BL_FULLSCALE_SHIFT) |
-		(cfg->dim_mode << LP8788_BL_DIM_MODE_SHIFT);
+	val = (LP8788_FULLSCALE_1900uA << LP8788_BL_FULLSCALE_SHIFT) |
+		(LP8788_DIM_EXPONENTIAL << LP8788_BL_DIM_MODE_SHIFT);
 
 	/* Brightness control mode */
-	switch (cfg->bl_mode) {
-	case LP8788_BL_REGISTER_ONLY:
-		val |= LP8788_BL_EN;
-		break;
-	case LP8788_BL_COMB_PWM_BASED:
-	case LP8788_BL_COMB_REGISTER_BASED:
-		val |= LP8788_BL_EN | LP8788_BL_PWM_INPUT_EN |
-			(cfg->pwm_pol << LP8788_BL_PWM_POLARITY_SHIFT);
-		break;
-	default:
-		dev_err(bl->lp->dev, "invalid mode: %d\n", cfg->bl_mode);
-		return -EINVAL;
-	}
-
-	bl->mode = cfg->bl_mode;
+	val |= LP8788_BL_EN;
 
 	return lp8788_write_byte(bl->lp, LP8788_BL_CONFIG, val);
 }
 
-static void lp8788_pwm_ctrl(struct lp8788_bl *bl, int br, int max_br)
-{
-	unsigned int period;
-	unsigned int duty;
-	struct device *dev;
-	struct pwm_device *pwm;
-
-	if (!bl->pdata)
-		return;
-
-	period = bl->pdata->period_ns;
-	duty = br * period / max_br;
-	dev = bl->lp->dev;
-
-	/* request PWM device with the consumer name */
-	if (!bl->pwm) {
-		pwm = devm_pwm_get(dev, LP8788_DEV_BACKLIGHT);
-		if (IS_ERR(pwm)) {
-			dev_err(dev, "can not get PWM device\n");
-			return;
-		}
-
-		bl->pwm = pwm;
-
-		/*
-		 * FIXME: pwm_apply_args() should be removed when switching to
-		 * the atomic PWM API.
-		 */
-		pwm_apply_args(pwm);
-	}
-
-	pwm_config(bl->pwm, duty, period);
-	if (duty)
-		pwm_enable(bl->pwm);
-	else
-		pwm_disable(bl->pwm);
-}
-
 static int lp8788_bl_update_status(struct backlight_device *bl_dev)
 {
 	struct lp8788_bl *bl = bl_get_data(bl_dev);
-	enum lp8788_bl_ctrl_mode mode = bl->mode;
 
 	if (bl_dev->props.state & BL_CORE_SUSPENDED)
 		bl_dev->props.brightness = 0;
 
-	if (is_brightness_ctrl_by_pwm(mode)) {
-		int brt = bl_dev->props.brightness;
-		int max = bl_dev->props.max_brightness;
-
-		lp8788_pwm_ctrl(bl, brt, max);
-	} else if (is_brightness_ctrl_by_register(mode)) {
-		u8 brt = bl_dev->props.brightness;
-
-		lp8788_write_byte(bl->lp, LP8788_BL_BRIGHTNESS, brt);
-	}
+	lp8788_write_byte(bl->lp, LP8788_BL_BRIGHTNESS, bl_dev->props.brightness);
 
 	return 0;
 }
@@ -187,30 +77,16 @@ static int lp8788_backlight_register(struct lp8788_bl *bl)
 {
 	struct backlight_device *bl_dev;
 	struct backlight_properties props;
-	struct lp8788_backlight_platform_data *pdata = bl->pdata;
-	int init_brt;
-	char *name;
 
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_PLATFORM;
 	props.max_brightness = MAX_BRIGHTNESS;
 
 	/* Initial brightness */
-	if (pdata)
-		init_brt = min_t(int, pdata->initial_brightness,
-				props.max_brightness);
-	else
-		init_brt = 0;
-
-	props.brightness = init_brt;
+	props.brightness = 0;
 
 	/* Backlight device name */
-	if (!pdata || !pdata->name)
-		name = DEFAULT_BL_NAME;
-	else
-		name = pdata->name;
-
-	bl_dev = backlight_device_register(name, bl->lp->dev, bl,
+	bl_dev = backlight_device_register(DEFAULT_BL_NAME, bl->lp->dev, bl,
 				       &lp8788_bl_ops, &props);
 	if (IS_ERR(bl_dev))
 		return PTR_ERR(bl_dev);
@@ -230,16 +106,7 @@ static void lp8788_backlight_unregister(struct lp8788_bl *bl)
 static ssize_t lp8788_get_bl_ctl_mode(struct device *dev,
 				     struct device_attribute *attr, char *buf)
 {
-	struct lp8788_bl *bl = dev_get_drvdata(dev);
-	enum lp8788_bl_ctrl_mode mode = bl->mode;
-	char *strmode;
-
-	if (is_brightness_ctrl_by_pwm(mode))
-		strmode = "PWM based";
-	else if (is_brightness_ctrl_by_register(mode))
-		strmode = "Register based";
-	else
-		strmode = "Invalid mode";
+	const char *strmode = "Register based";
 
 	return scnprintf(buf, PAGE_SIZE, "%s\n", strmode);
 }
@@ -266,8 +133,6 @@ static int lp8788_backlight_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	bl->lp = lp;
-	if (lp->pdata)
-		bl->pdata = lp->pdata->bl_pdata;
 
 	platform_set_drvdata(pdev, bl);
 
diff --git a/drivers/video/backlight/ltv350qv.c b/drivers/video/backlight/ltv350qv.c
index d54f501e4285..cdc4c087f230 100644
--- a/drivers/video/backlight/ltv350qv.c
+++ b/drivers/video/backlight/ltv350qv.c
@@ -217,7 +217,7 @@ static int ltv350qv_get_power(struct lcd_device *ld)
 	return lcd->power;
 }
 
-static struct lcd_ops ltv_ops = {
+static const struct lcd_ops ltv_ops = {
 	.get_power	= ltv350qv_get_power,
 	.set_power	= ltv350qv_set_power,
 };
diff --git a/drivers/video/backlight/lv5207lp.c b/drivers/video/backlight/lv5207lp.c
index 1f1d06b4e119..0cf00fee0f60 100644
--- a/drivers/video/backlight/lv5207lp.c
+++ b/drivers/video/backlight/lv5207lp.c
@@ -62,18 +62,18 @@ static int lv5207lp_backlight_update_status(struct backlight_device *backlight)
 	return 0;
 }
 
-static int lv5207lp_backlight_check_fb(struct backlight_device *backlight,
-				       struct fb_info *info)
+static bool lv5207lp_backlight_controls_device(struct backlight_device *backlight,
+					       struct device *display_dev)
 {
 	struct lv5207lp *lv = bl_get_data(backlight);
 
-	return !lv->pdata->dev || lv->pdata->dev == info->device;
+	return !lv->pdata->dev || lv->pdata->dev == display_dev;
 }
 
 static const struct backlight_ops lv5207lp_backlight_ops = {
-	.options	= BL_CORE_SUSPENDRESUME,
-	.update_status	= lv5207lp_backlight_update_status,
-	.check_fb	= lv5207lp_backlight_check_fb,
+	.options	 = BL_CORE_SUSPENDRESUME,
+	.update_status	 = lv5207lp_backlight_update_status,
+	.controls_device = lv5207lp_backlight_controls_device,
 };
 
 static int lv5207lp_probe(struct i2c_client *client)
diff --git a/drivers/video/backlight/mp3309c.c b/drivers/video/backlight/mp3309c.c
index c80a1481e742..a28036c964af 100644
--- a/drivers/video/backlight/mp3309c.c
+++ b/drivers/video/backlight/mp3309c.c
@@ -97,15 +97,10 @@ static int mp3309c_enable_device(struct mp3309c_chip *chip)
 
 	/*
 	 * I2C register #1 - Set working mode:
-	 *  - set one of the two dimming mode:
-	 *    - PWM dimming using an external PWM dimming signal
-	 *    - analog dimming using I2C commands
 	 *  - enable/disable synchronous mode
 	 *  - set overvoltage protection (OVP)
 	 */
 	reg_val = 0x00;
-	if (chip->pdata->dimming_mode == DIMMING_PWM)
-		reg_val |= REG_I2C_1_DIMS;
 	if (chip->pdata->sync_mode)
 		reg_val |= REG_I2C_1_SYNC;
 	reg_val |= chip->pdata->over_voltage_protection;
@@ -205,8 +200,9 @@ static int mp3309c_parse_fwnode(struct mp3309c_chip *chip,
 				struct mp3309c_platform_data *pdata)
 {
 	int ret, i;
-	unsigned int num_levels, tmp_value;
+	unsigned int tmp_value;
 	struct device *dev = chip->dev;
+	int num_levels;
 
 	if (!dev_fwnode(dev))
 		return dev_err_probe(dev, -ENODEV, "failed to get firmware node\n");
@@ -363,7 +359,6 @@ static int mp3309c_probe(struct i2c_client *client)
 	props.scale = BACKLIGHT_SCALE_LINEAR;
 	props.type = BACKLIGHT_RAW;
 	props.power = FB_BLANK_UNBLANK;
-	props.fb_blank = FB_BLANK_UNBLANK;
 	chip->bl = devm_backlight_device_register(dev, "mp3309c", dev, chip,
 						  &mp3309c_bl_ops, &props);
 	if (IS_ERR(chip->bl))
diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index 69a49384b3de..e461e19231ae 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -9,7 +9,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/fb.h>
 #include <linux/backlight.h>
 #include <linux/slab.h>
 #include <linux/platform_data/omap1_bl.h>
@@ -20,7 +19,7 @@
 #define OMAPBL_MAX_INTENSITY		0xff
 
 struct omap_backlight {
-	int powermode;
+	bool enabled;
 	int current_intensity;
 
 	struct device *dev;
@@ -37,24 +36,14 @@ static inline void omapbl_send_enable(int enable)
 	omap_writeb(enable, OMAP_PWL_CLK_ENABLE);
 }
 
-static void omapbl_blank(struct omap_backlight *bl, int mode)
+static void omapbl_enable(struct omap_backlight *bl, bool enable)
 {
-	if (bl->pdata->set_power)
-		bl->pdata->set_power(bl->dev, mode);
-
-	switch (mode) {
-	case FB_BLANK_NORMAL:
-	case FB_BLANK_VSYNC_SUSPEND:
-	case FB_BLANK_HSYNC_SUSPEND:
-	case FB_BLANK_POWERDOWN:
-		omapbl_send_intensity(0);
-		omapbl_send_enable(0);
-		break;
-
-	case FB_BLANK_UNBLANK:
+	if (enable) {
 		omapbl_send_intensity(bl->current_intensity);
 		omapbl_send_enable(1);
-		break;
+	} else {
+		omapbl_send_intensity(0);
+		omapbl_send_enable(0);
 	}
 }
 
@@ -64,7 +53,7 @@ static int omapbl_suspend(struct device *dev)
 	struct backlight_device *bl_dev = dev_get_drvdata(dev);
 	struct omap_backlight *bl = bl_get_data(bl_dev);
 
-	omapbl_blank(bl, FB_BLANK_POWERDOWN);
+	omapbl_enable(bl, false);
 	return 0;
 }
 
@@ -73,33 +62,34 @@ static int omapbl_resume(struct device *dev)
 	struct backlight_device *bl_dev = dev_get_drvdata(dev);
 	struct omap_backlight *bl = bl_get_data(bl_dev);
 
-	omapbl_blank(bl, bl->powermode);
+	omapbl_enable(bl, bl->enabled);
 	return 0;
 }
 #endif
 
-static int omapbl_set_power(struct backlight_device *dev, int state)
+static void omapbl_set_enabled(struct backlight_device *dev, bool enable)
 {
 	struct omap_backlight *bl = bl_get_data(dev);
 
-	omapbl_blank(bl, state);
-	bl->powermode = state;
-
-	return 0;
+	omapbl_enable(bl, enable);
+	bl->enabled = enable;
 }
 
 static int omapbl_update_status(struct backlight_device *dev)
 {
 	struct omap_backlight *bl = bl_get_data(dev);
+	bool enable;
 
 	if (bl->current_intensity != dev->props.brightness) {
-		if (bl->powermode == FB_BLANK_UNBLANK)
+		if (bl->enabled)
 			omapbl_send_intensity(dev->props.brightness);
 		bl->current_intensity = dev->props.brightness;
 	}
 
-	if (dev->props.fb_blank != bl->powermode)
-		omapbl_set_power(dev, dev->props.fb_blank);
+	enable = !backlight_is_blank(dev);
+
+	if (enable != bl->enabled)
+		omapbl_set_enabled(dev, enable);
 
 	return 0;
 }
@@ -139,7 +129,7 @@ static int omapbl_probe(struct platform_device *pdev)
 	if (IS_ERR(dev))
 		return PTR_ERR(dev);
 
-	bl->powermode = FB_BLANK_POWERDOWN;
+	bl->enabled = false;
 	bl->current_intensity = 0;
 
 	bl->pdata = pdata;
@@ -149,7 +139,6 @@ static int omapbl_probe(struct platform_device *pdev)
 
 	omap_cfg_reg(PWL);	/* Conflicts with UART3 */
 
-	dev->props.fb_blank = FB_BLANK_UNBLANK;
 	dev->props.brightness = pdata->default_intensity;
 	omapbl_update_status(dev);
 
diff --git a/drivers/video/backlight/otm3225a.c b/drivers/video/backlight/otm3225a.c
index 2472e2167aae..efe52fa08b07 100644
--- a/drivers/video/backlight/otm3225a.c
+++ b/drivers/video/backlight/otm3225a.c
@@ -205,7 +205,7 @@ static int otm3225a_get_power(struct lcd_device *ld)
 	return dd->power;
 }
 
-static struct lcd_ops otm3225a_ops = {
+static const struct lcd_ops otm3225a_ops = {
 	.set_power = otm3225a_set_power,
 	.get_power = otm3225a_get_power,
 };
@@ -239,7 +239,6 @@ static int otm3225a_probe(struct spi_device *spi)
 static struct spi_driver otm3225a_driver = {
 	.driver = {
 		.name = "otm3225a",
-		.owner = THIS_MODULE,
 	},
 	.probe = otm3225a_probe,
 };
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
index dc37494baf42..76872f5c34c5 100644
--- a/drivers/video/backlight/platform_lcd.c
+++ b/drivers/video/backlight/platform_lcd.c
@@ -62,7 +62,7 @@ static int platform_lcd_match(struct lcd_device *lcd, struct fb_info *info)
 	return plcd->us->parent == info->device;
 }
 
-static struct lcd_ops platform_lcd_ops = {
+static const struct lcd_ops platform_lcd_ops = {
 	.get_power	= platform_lcd_get_power,
 	.set_power	= platform_lcd_set_power,
 	.check_fb	= platform_lcd_match,
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index ffcebf6aa76a..61d30bc98eea 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -11,7 +11,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/fb.h>
 #include <linux/backlight.h>
 #include <linux/err.h>
 #include <linux/pwm.h>
@@ -34,7 +33,6 @@ struct pwm_bl_data {
 					  int brightness);
 	void			(*notify_after)(struct device *,
 					int brightness);
-	int			(*check_fb)(struct device *, struct fb_info *);
 	void			(*exit)(struct device *);
 };
 
@@ -129,17 +127,8 @@ static int pwm_backlight_update_status(struct backlight_device *bl)
 	return 0;
 }
 
-static int pwm_backlight_check_fb(struct backlight_device *bl,
-				  struct fb_info *info)
-{
-	struct pwm_bl_data *pb = bl_get_data(bl);
-
-	return !pb->check_fb || pb->check_fb(pb->dev, info);
-}
-
 static const struct backlight_ops pwm_backlight_ops = {
 	.update_status	= pwm_backlight_update_status,
-	.check_fb	= pwm_backlight_check_fb,
 };
 
 #ifdef CONFIG_OF
@@ -482,7 +471,6 @@ static int pwm_backlight_probe(struct platform_device *pdev)
 
 	pb->notify = data->notify;
 	pb->notify_after = data->notify_after;
-	pb->check_fb = data->check_fb;
 	pb->exit = data->exit;
 	pb->dev = &pdev->dev;
 	pb->enabled = false;
diff --git a/drivers/video/backlight/sky81452-backlight.c b/drivers/video/backlight/sky81452-backlight.c
index eb18c6eb0ff0..19f9f84a9fd6 100644
--- a/drivers/video/backlight/sky81452-backlight.c
+++ b/drivers/video/backlight/sky81452-backlight.c
@@ -182,7 +182,7 @@ static const struct attribute_group sky81452_bl_attr_group = {
 static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
 							struct device *dev)
 {
-	struct device_node *np = of_node_get(dev->of_node);
+	struct device_node *np = dev->of_node;
 	struct sky81452_bl_platform_data *pdata;
 	int num_entry;
 	unsigned int sources[6];
@@ -194,10 +194,8 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
 	}
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata) {
-		of_node_put(np);
+	if (!pdata)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	of_property_read_string(np, "name", &pdata->name);
 	pdata->ignore_pwm = of_property_read_bool(np, "skyworks,ignore-pwm");
@@ -217,7 +215,6 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
 					num_entry);
 		if (ret < 0) {
 			dev_err(dev, "led-sources node is invalid.\n");
-			of_node_put(np);
 			return ERR_PTR(-EINVAL);
 		}
 
@@ -237,7 +234,6 @@ static struct sky81452_bl_platform_data *sky81452_bl_parse_dt(
 	if (ret < 0)
 		pdata->boost_current_limit = 2750;
 
-	of_node_put(np);
 	return pdata;
 }
 #else
diff --git a/drivers/video/backlight/tdo24m.c b/drivers/video/backlight/tdo24m.c
index fc6fbaf85594..c413b3c68e95 100644
--- a/drivers/video/backlight/tdo24m.c
+++ b/drivers/video/backlight/tdo24m.c
@@ -322,7 +322,7 @@ static int tdo24m_set_mode(struct lcd_device *ld, struct fb_videomode *m)
 	return lcd->adj_mode(lcd, mode);
 }
 
-static struct lcd_ops tdo24m_ops = {
+static const struct lcd_ops tdo24m_ops = {
 	.get_power	= tdo24m_get_power,
 	.set_power	= tdo24m_set_power,
 	.set_mode	= tdo24m_set_mode,
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 197b6d5268e9..ea36c6956bf3 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -157,7 +157,7 @@ config FB_IMX
 
 config FB_CYBER2000
 	tristate "CyberPro 2000/2010/5000 support"
-	depends on FB && PCI && (BROKEN || !SPARC64)
+	depends on FB && PCI && HAS_IOPORT && (BROKEN || !SPARC64)
 	select FB_IOMEM_HELPERS
 	help
 	  This enables support for the Integraphics CyberPro 20x0 and 5000
@@ -245,7 +245,7 @@ config FB_FM2
 
 config FB_ARC
 	tristate "Arc Monochrome LCD board support"
-	depends on FB && (X86 || COMPILE_TEST)
+	depends on FB && HAS_IOPORT && (X86 || COMPILE_TEST)
 	select FB_SYSMEM_HELPERS_DEFERRED
 	help
 	  This enables support for the Arc Monochrome LCD board. The board
@@ -1046,7 +1046,7 @@ config FB_ATY_BACKLIGHT
 
 config FB_S3
 	tristate "S3 Trio/Virge support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1107,7 +1107,7 @@ config FB_SAVAGE_ACCEL
 
 config FB_SIS
 	tristate "SiS/XGI display support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select BOOT_VESA_SUPPORT if FB_SIS = y
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
@@ -1138,7 +1138,7 @@ config FB_SIS_315
 
 config FB_VIA
 	tristate "VIA UniChrome (Pro) and Chrome9 display support"
-	depends on FB && PCI && GPIOLIB && I2C && (X86 || COMPILE_TEST)
+	depends on FB && PCI && GPIOLIB && I2C && HAS_IOPORT && (X86 || COMPILE_TEST)
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1177,7 +1177,7 @@ endif
 
 config FB_NEOMAGIC
 	tristate "NeoMagic display support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1204,7 +1204,7 @@ config FB_KYRO
 
 config FB_3DFX
 	tristate "3Dfx Banshee/Voodoo3/Voodoo5 display support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1252,7 +1252,7 @@ config FB_VOODOO1
 
 config FB_VT8623
 	tristate "VIA VT8623 support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1267,7 +1267,7 @@ config FB_VT8623
 
 config FB_TRIDENT
 	tristate "Trident/CyberXXX/CyberBlade support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1290,7 +1290,7 @@ config FB_TRIDENT
 
 config FB_ARK
 	tristate "ARK 2000PV support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
@@ -1648,8 +1648,8 @@ config FB_COBALT
 	select FB_IOMEM_HELPERS
 
 config FB_SH7760
-	bool "SH7760/SH7763/SH7720/SH7721 LCDC support"
-	depends on FB=y && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
+	tristate "SH7760/SH7763/SH7720/SH7721 LCDC support"
+	depends on FB && (CPU_SUBTYPE_SH7760 || CPU_SUBTYPE_SH7763 \
 		|| CPU_SUBTYPE_SH7720 || CPU_SUBTYPE_SH7721)
 	select FB_IOMEM_HELPERS
 	help
@@ -1814,7 +1814,7 @@ config FB_SSD1307
 
 config FB_SM712
 	tristate "Silicon Motion SM712 framebuffer support"
-	depends on FB && PCI
+	depends on FB && PCI && HAS_IOPORT
 	select FB_IOMEM_HELPERS
 	help
 	  Frame buffer driver for the Silicon Motion SM710, SM712, SM721
diff --git a/drivers/video/fbdev/atmel_lcdfb.c b/drivers/video/fbdev/atmel_lcdfb.c
index 9e391e5eaf9d..5574fb0361ee 100644
--- a/drivers/video/fbdev/atmel_lcdfb.c
+++ b/drivers/video/fbdev/atmel_lcdfb.c
@@ -153,7 +153,6 @@ static void init_backlight(struct atmel_lcdfb_info *sinfo)
 	sinfo->backlight = bl;
 
 	bl->props.power = FB_BLANK_UNBLANK;
-	bl->props.fb_blank = FB_BLANK_UNBLANK;
 	bl->props.brightness = atmel_bl_get_brightness(bl);
 }
 
diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c
index 6f20efc663d7..e718fea63662 100644
--- a/drivers/video/fbdev/au1200fb.c
+++ b/drivers/video/fbdev/au1200fb.c
@@ -1557,7 +1557,7 @@ static int au1200fb_init_fbinfo(struct au1200fb_device *fbdev)
 		return ret;
 	}
 
-	strncpy(fbi->fix.id, "AU1200", sizeof(fbi->fix.id));
+	strscpy(fbi->fix.id, "AU1200");
 	fbi->fix.smem_start = fbdev->fb_phys;
 	fbi->fix.smem_len = fbdev->fb_len;
 	fbi->fix.type = FB_TYPE_PACKED_PIXELS;
diff --git a/drivers/video/fbdev/clps711x-fb.c b/drivers/video/fbdev/clps711x-fb.c
index dcfd1fbbc7e1..6171a98a48fd 100644
--- a/drivers/video/fbdev/clps711x-fb.c
+++ b/drivers/video/fbdev/clps711x-fb.c
@@ -197,7 +197,7 @@ static int clps711x_lcd_set_power(struct lcd_device *lcddev, int blank)
 	return 0;
 }
 
-static struct lcd_ops clps711x_lcd_ops = {
+static const struct lcd_ops clps711x_lcd_ops = {
 	.check_fb	= clps711x_lcd_check_fb,
 	.get_power	= clps711x_lcd_get_power,
 	.set_power	= clps711x_lcd_set_power,
diff --git a/drivers/video/fbdev/core/fb_backlight.c b/drivers/video/fbdev/core/fb_backlight.c
index e2d3b3adc870..6fdaa9f81be9 100644
--- a/drivers/video/fbdev/core/fb_backlight.c
+++ b/drivers/video/fbdev/core/fb_backlight.c
@@ -30,4 +30,10 @@ void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max)
 	mutex_unlock(&fb_info->bl_curve_mutex);
 }
 EXPORT_SYMBOL_GPL(fb_bl_default_curve);
+
+struct backlight_device *fb_bl_device(struct fb_info *info)
+{
+	return info->bl_dev;
+}
+EXPORT_SYMBOL(fb_bl_device);
 #endif
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c
index fcabc668e9fb..3f7333dca508 100644
--- a/drivers/video/fbdev/core/fbcon.c
+++ b/drivers/video/fbdev/core/fbcon.c
@@ -2907,7 +2907,7 @@ void fbcon_remap_all(struct fb_info *info)
 static void fbcon_select_primary(struct fb_info *info)
 {
 	if (!map_override && primary_device == -1 &&
-	    fb_is_primary_device(info)) {
+	    video_is_primary_device(info->device)) {
 		int i;
 
 		printk(KERN_INFO "fbcon: %s (fb%i) is primary device\n",
diff --git a/drivers/video/fbdev/fsl-diu-fb.c b/drivers/video/fbdev/fsl-diu-fb.c
index 0191141657fd..ea37a60da10c 100644
--- a/drivers/video/fbdev/fsl-diu-fb.c
+++ b/drivers/video/fbdev/fsl-diu-fb.c
@@ -787,7 +787,7 @@ static void set_fix(struct fb_info *info)
 	struct fb_var_screeninfo *var = &info->var;
 	struct mfb_info *mfbi = info->par;
 
-	strncpy(fix->id, mfbi->id, sizeof(fix->id));
+	strscpy_pad(fix->id, mfbi->id);
 	fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
 	fix->type = FB_TYPE_PACKED_PIXELS;
 	fix->accel = FB_ACCEL_NONE;
diff --git a/drivers/video/fbdev/imxfb.c b/drivers/video/fbdev/imxfb.c
index a4dbc72f93c3..4ebfe9b9df60 100644
--- a/drivers/video/fbdev/imxfb.c
+++ b/drivers/video/fbdev/imxfb.c
@@ -857,7 +857,7 @@ static int imxfb_lcd_set_power(struct lcd_device *lcddev, int power)
 	return 0;
 }
 
-static struct lcd_ops imxfb_lcd_ops = {
+static const struct lcd_ops imxfb_lcd_ops = {
 	.check_fb	= imxfb_lcd_check_fb,
 	.get_contrast	= imxfb_lcd_get_contrast,
 	.set_contrast	= imxfb_lcd_set_contrast,
diff --git a/drivers/video/fbdev/offb.c b/drivers/video/fbdev/offb.c
index b421b46d88ef..ea38a260774b 100644
--- a/drivers/video/fbdev/offb.c
+++ b/drivers/video/fbdev/offb.c
@@ -357,7 +357,7 @@ static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp
 			par->cmap_type = cmap_gxt2000;
 	} else if (of_node_name_prefix(dp, "vga,Display-")) {
 		/* Look for AVIVO initialized by SLOF */
-		struct device_node *pciparent = of_get_parent(dp);
+		struct device_node *pciparent __free(device_node) = of_get_parent(dp);
 		const u32 *vid, *did;
 		vid = of_get_property(pciparent, "vendor-id", NULL);
 		did = of_get_property(pciparent, "device-id", NULL);
@@ -369,7 +369,6 @@ static void offb_init_palette_hacks(struct fb_info *info, struct device_node *dp
 			if (par->cmap_adr)
 				par->cmap_type = cmap_avivo;
 		}
-		of_node_put(pciparent);
 	} else if (dp && of_device_is_compatible(dp, "qemu,std-vga")) {
 #ifdef __BIG_ENDIAN
 		const __be32 io_of_addr[3] = { 0x01000000, 0x0, 0x0 };
diff --git a/drivers/video/fbdev/omap/lcd_ams_delta.c b/drivers/video/fbdev/omap/lcd_ams_delta.c
index 6f860c814d2c..97e2b71b64d7 100644
--- a/drivers/video/fbdev/omap/lcd_ams_delta.c
+++ b/drivers/video/fbdev/omap/lcd_ams_delta.c
@@ -76,7 +76,7 @@ static int ams_delta_lcd_get_contrast(struct lcd_device *dev)
 	return ams_delta_lcd & AMS_DELTA_MAX_CONTRAST;
 }
 
-static struct lcd_ops ams_delta_lcd_ops = {
+static const struct lcd_ops ams_delta_lcd_ops = {
 	.get_power = ams_delta_lcd_get_power,
 	.set_power = ams_delta_lcd_set_power,
 	.get_contrast = ams_delta_lcd_get_contrast,
diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
index adb8881bac28..274bdf7b3b45 100644
--- a/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c
@@ -356,11 +356,7 @@ static int dsicm_bl_update_status(struct backlight_device *dev)
 
 static int dsicm_bl_get_intensity(struct backlight_device *dev)
 {
-	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
-			dev->props.power == FB_BLANK_UNBLANK)
-		return dev->props.brightness;
-
-	return 0;
+	return backlight_get_brightness(dev);
 }
 
 static const struct backlight_ops dsicm_bl_ops = {
@@ -1219,7 +1215,6 @@ static int dsicm_probe(struct platform_device *pdev)
 
 		ddata->bldev = bldev;
 
-		bldev->props.fb_blank = FB_BLANK_UNBLANK;
 		bldev->props.power = FB_BLANK_UNBLANK;
 		bldev->props.brightness = 255;
 
diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
index 685c63aa4e03..71d2e015960c 100644
--- a/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
+++ b/drivers/video/fbdev/omap2/omapfb/displays/panel-sony-acx565akm.c
@@ -340,11 +340,7 @@ static int acx565akm_bl_update_status(struct backlight_device *dev)
 
 	dev_dbg(&ddata->spi->dev, "%s\n", __func__);
 
-	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
-			dev->props.power == FB_BLANK_UNBLANK)
-		level = dev->props.brightness;
-	else
-		level = 0;
+	level = backlight_get_brightness(dev);
 
 	if (ddata->has_bc)
 		acx565akm_set_brightness(ddata, level);
@@ -363,8 +359,7 @@ static int acx565akm_bl_get_intensity(struct backlight_device *dev)
 	if (!ddata->has_bc)
 		return -ENODEV;
 
-	if (dev->props.fb_blank == FB_BLANK_UNBLANK &&
-			dev->props.power == FB_BLANK_UNBLANK) {
+	if (!backlight_is_blank(dev)) {
 		if (ddata->has_bc)
 			return acx565akm_get_actual_brightness(ddata);
 		else
@@ -758,7 +753,6 @@ static int acx565akm_probe(struct spi_device *spi)
 	}
 
 	memset(&props, 0, sizeof(props));
-	props.fb_blank = FB_BLANK_UNBLANK;
 	props.power = FB_BLANK_UNBLANK;
 	props.type = BACKLIGHT_RAW;
 
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
index b7eb17a16ec4..1f13bcf73da5 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/dsi.c
@@ -28,6 +28,7 @@
 #include <linux/debugfs.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 #include <linux/of_platform.h>
 #include <linux/component.h>
 
@@ -5079,7 +5080,7 @@ static int dsi_probe_of(struct platform_device *pdev)
 	struct device_node *ep;
 	struct omap_dsi_pin_config pin_cfg;
 
-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 	if (!ep)
 		return 0;
 
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c b/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
index 0282d4eef139..14965a3fd05b 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/dss-of.c
@@ -130,24 +130,6 @@ static struct device_node *omapdss_of_get_remote_port(const struct device_node *
 	return np;
 }
 
-struct device_node *
-omapdss_of_get_first_endpoint(const struct device_node *parent)
-{
-	struct device_node *port, *ep;
-
-	port = omapdss_of_get_next_port(parent, NULL);
-
-	if (!port)
-		return NULL;
-
-	ep = omapdss_of_get_next_endpoint(port, NULL);
-
-	of_node_put(port);
-
-	return ep;
-}
-EXPORT_SYMBOL_GPL(omapdss_of_get_first_endpoint);
-
 struct omap_dss_device *
 omapdss_of_find_source_for_first_ep(struct device_node *node)
 {
@@ -155,7 +137,7 @@ omapdss_of_find_source_for_first_ep(struct device_node *node)
 	struct device_node *src_port;
 	struct omap_dss_device *src;
 
-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 	if (!ep)
 		return ERR_PTR(-EINVAL);
 
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
index f05b4e35a842..8f407ec134dc 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi4.c
@@ -20,6 +20,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 #include <linux/component.h>
 #include <video/omapfb_dss.h>
@@ -529,7 +530,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
 	struct device_node *ep;
 	int r;
 
-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 	if (!ep)
 		return 0;
 
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
index 03292945b1d4..4ad219f522b9 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
@@ -25,6 +25,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 #include <linux/regulator/consumer.h>
 #include <linux/component.h>
 #include <video/omapfb_dss.h>
@@ -561,7 +562,7 @@ static int hdmi_probe_of(struct platform_device *pdev)
 	struct device_node *ep;
 	int r;
 
-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 	if (!ep)
 		return 0;
 
diff --git a/drivers/video/fbdev/omap2/omapfb/dss/venc.c b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
index c9d40e28a06f..0bd80d3b8f1b 100644
--- a/drivers/video/fbdev/omap2/omapfb/dss/venc.c
+++ b/drivers/video/fbdev/omap2/omapfb/dss/venc.c
@@ -24,6 +24,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/pm_runtime.h>
 #include <linux/of.h>
+#include <linux/of_graph.h>
 #include <linux/component.h>
 
 #include <video/omapfb_dss.h>
@@ -764,7 +765,7 @@ static int venc_probe_of(struct platform_device *pdev)
 	u32 channels;
 	int r;
 
-	ep = omapdss_of_get_first_endpoint(node);
+	ep = of_graph_get_endpoint_by_regs(node, 0, -1);
 	if (!ep)
 		return 0;
 
diff --git a/drivers/video/fbdev/pxafb.c b/drivers/video/fbdev/pxafb.c
index fa943612c4e2..2ef56fa28aff 100644
--- a/drivers/video/fbdev/pxafb.c
+++ b/drivers/video/fbdev/pxafb.c
@@ -2171,7 +2171,7 @@ static int of_get_pxafb_mode_info(struct device *dev,
 	u32 bus_width;
 	int ret, i;
 
-	np = of_graph_get_next_endpoint(dev->of_node, NULL);
+	np = of_graph_get_endpoint_by_regs(dev->of_node, 0, -1);
 	if (!np) {
 		dev_err(dev, "could not find endpoint\n");
 		return -EINVAL;
diff --git a/drivers/video/fbdev/savage/savagefb_driver.c b/drivers/video/fbdev/savage/savagefb_driver.c
index ebc9aeffdde7..ac41f8f37589 100644
--- a/drivers/video/fbdev/savage/savagefb_driver.c
+++ b/drivers/video/fbdev/savage/savagefb_driver.c
@@ -2276,7 +2276,10 @@ static int savagefb_probe(struct pci_dev *dev, const struct pci_device_id *id)
 	if (info->var.xres_virtual > 0x1000)
 		info->var.xres_virtual = 0x1000;
 #endif
-	savagefb_check_var(&info->var, info);
+	err = savagefb_check_var(&info->var, info);
+	if (err)
+		goto failed;
+
 	savagefb_set_fix(info);
 
 	/*
diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c
index eb2297b37504..73c69e39a68d 100644
--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
@@ -1575,7 +1575,7 @@ sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
 	 */
 	info->fix = sh_mobile_lcdc_overlay_fix;
 	snprintf(info->fix.id, sizeof(info->fix.id),
-		 "SH Mobile LCDC Overlay %u", ovl->index);
+		 "SHMobile ovl %u", ovl->index);
 	info->fix.smem_start = ovl->dma_handle;
 	info->fix.smem_len = ovl->fb_size;
 	info->fix.line_length = ovl->pitch;
@@ -2140,17 +2140,10 @@ static int sh_mobile_lcdc_get_brightness(struct backlight_device *bdev)
 	return ch->bl_brightness;
 }
 
-static int sh_mobile_lcdc_check_fb(struct backlight_device *bdev,
-				   struct fb_info *info)
-{
-	return (info->bl_dev == bdev);
-}
-
 static const struct backlight_ops sh_mobile_lcdc_bl_ops = {
 	.options	= BL_CORE_SUSPENDRESUME,
 	.update_status	= sh_mobile_lcdc_update_bl,
 	.get_brightness	= sh_mobile_lcdc_get_brightness,
-	.check_fb	= sh_mobile_lcdc_check_fb,
 };
 
 static struct backlight_device *sh_mobile_lcdc_bl_probe(struct device *parent,
diff --git a/drivers/video/fbdev/sis/init301.c b/drivers/video/fbdev/sis/init301.c
index a8fb41f1a258..09329072004f 100644
--- a/drivers/video/fbdev/sis/init301.c
+++ b/drivers/video/fbdev/sis/init301.c
@@ -172,7 +172,7 @@ static const unsigned char SiS_HiTVGroup3_2[] = {
 };
 
 /* 301C / 302ELV extended Part2 TV registers (4 tap scaler) */
-
+#ifdef CONFIG_FB_SIS_315
 static const unsigned char SiS_Part2CLVX_1[] = {
     0x00,0x00,
     0x00,0x20,0x00,0x00,0x7F,0x20,0x02,0x7F,0x7D,0x20,0x04,0x7F,0x7D,0x1F,0x06,0x7E,
@@ -245,7 +245,6 @@ static const unsigned char SiS_Part2CLVX_6[] = {   /* 1080i */
     0xFF,0xFF,
 };
 
-#ifdef CONFIG_FB_SIS_315
 /* 661 et al LCD data structure (2.03.00) */
 static const unsigned char SiS_LCDStruct661[] = {
     /* 1024x768 */
diff --git a/drivers/video/fbdev/ssd1307fb.c b/drivers/video/fbdev/ssd1307fb.c
index 1a4f90ea7d5a..3f30af3c059e 100644
--- a/drivers/video/fbdev/ssd1307fb.c
+++ b/drivers/video/fbdev/ssd1307fb.c
@@ -530,17 +530,10 @@ static int ssd1307fb_get_brightness(struct backlight_device *bdev)
 	return par->contrast;
 }
 
-static int ssd1307fb_check_fb(struct backlight_device *bdev,
-				   struct fb_info *info)
-{
-	return (info->bl_dev == bdev);
-}
-
 static const struct backlight_ops ssd1307fb_bl_ops = {
 	.options	= BL_CORE_SUSPENDRESUME,
 	.update_status	= ssd1307fb_update_bl,
 	.get_brightness	= ssd1307fb_get_brightness,
-	.check_fb	= ssd1307fb_check_fb,
 };
 
 static struct ssd1307fb_deviceinfo ssd1307fb_ssd1305_deviceinfo = {
@@ -594,7 +587,6 @@ static int ssd1307fb_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	struct backlight_device *bl;
-	char bl_name[12];
 	struct fb_info *info;
 	struct fb_deferred_io *ssd1307fb_defio;
 	u32 vmem_size;
@@ -733,31 +725,30 @@ static int ssd1307fb_probe(struct i2c_client *client)
 	if (ret)
 		goto regulator_enable_error;
 
-	ret = register_framebuffer(info);
-	if (ret) {
-		dev_err(dev, "Couldn't register the framebuffer\n");
-		goto panel_init_error;
-	}
-
-	snprintf(bl_name, sizeof(bl_name), "ssd1307fb%d", info->node);
-	bl = backlight_device_register(bl_name, dev, par, &ssd1307fb_bl_ops,
+	bl = backlight_device_register("ssd1307fb-bl", dev, par, &ssd1307fb_bl_ops,
 				       NULL);
 	if (IS_ERR(bl)) {
 		ret = PTR_ERR(bl);
 		dev_err(dev, "unable to register backlight device: %d\n", ret);
-		goto bl_init_error;
+		goto panel_init_error;
+	}
+	info->bl_dev = bl;
+
+	ret = register_framebuffer(info);
+	if (ret) {
+		dev_err(dev, "Couldn't register the framebuffer\n");
+		goto fb_init_error;
 	}
 
 	bl->props.brightness = par->contrast;
 	bl->props.max_brightness = MAX_CONTRAST;
-	info->bl_dev = bl;
 
 	dev_info(dev, "fb%d: %s framebuffer device registered, using %d bytes of video memory\n", info->node, info->fix.id, vmem_size);
 
 	return 0;
 
-bl_init_error:
-	unregister_framebuffer(info);
+fb_init_error:
+	backlight_device_unregister(bl);
 panel_init_error:
 	pwm_disable(par->pwm);
 	pwm_put(par->pwm);
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 73f00c079a94..2a88f0d4a84c 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -1867,7 +1867,7 @@ static ssize_t v86d_show(struct device_driver *dev, char *buf)
 static ssize_t v86d_store(struct device_driver *dev, const char *buf,
 		size_t count)
 {
-	strncpy(v86d_path, buf, PATH_MAX - 1);
+	strscpy_pad(v86d_path, buf);
 	return count;
 }
 static DRIVER_ATTR_RW(v86d);
diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c
index 03c7f27dde49..ba301f3f4951 100644
--- a/drivers/video/hdmi.c
+++ b/drivers/video/hdmi.c
@@ -1310,17 +1310,11 @@ static void hdmi_spd_infoframe_log(const char *level,
 				   struct device *dev,
 				   const struct hdmi_spd_infoframe *frame)
 {
-	u8 buf[17];
-
 	hdmi_infoframe_log_header(level, dev,
 				  (const struct hdmi_any_infoframe *)frame);
 
-	memset(buf, 0, sizeof(buf));
-
-	strncpy(buf, frame->vendor, 8);
-	hdmi_log("    vendor: %s\n", buf);
-	strncpy(buf, frame->product, 16);
-	hdmi_log("    product: %s\n", buf);
+	hdmi_log("    vendor: %.8s\n", frame->vendor);
+	hdmi_log("    product: %.16s\n", frame->product);
 	hdmi_log("    source device information: %s (0x%x)\n",
 		hdmi_spd_sdi_get_name(frame->sdi), frame->sdi);
 }
diff --git a/drivers/video/logo/pnmtologo.c b/drivers/video/logo/pnmtologo.c
index 2434a25afb64..8080c4d9c4a2 100644
--- a/drivers/video/logo/pnmtologo.c
+++ b/drivers/video/logo/pnmtologo.c
@@ -235,8 +235,6 @@ static void write_header(void)
 	fputs("/*\n", out);
 	fputs(" *  DO NOT EDIT THIS FILE!\n", out);
 	fputs(" *\n", out);
-	fprintf(out, " *  It was automatically generated from %s\n", filename);
-	fputs(" *\n", out);
 	fprintf(out, " *  Linux logo %s\n", logoname);
 	fputs(" */\n\n", out);
 	fputs("#include <linux/linux_logo.h>\n\n", out);