Merge branch 'akpm' (aka "Andrew's patch-bomb")

Andrew elucidates:
 - First installmeant of MM.  We have a HUGE number of MM patches this
   time.  It's crazy.
 - MAINTAINERS updates
 - backlight updates
 - leds
 - checkpatch updates
 - misc ELF stuff
 - rtc updates
 - reiserfs
 - procfs
 - some misc other bits

* akpm: (124 commits)
  user namespace: make signal.c respect user namespaces
  workqueue: make alloc_workqueue() take printf fmt and args for name
  procfs: add hidepid= and gid= mount options
  procfs: parse mount options
  procfs: introduce the /proc/<pid>/map_files/ directory
  procfs: make proc_get_link to use dentry instead of inode
  signal: add block_sigmask() for adding sigmask to current->blocked
  sparc: make SA_NOMASK a synonym of SA_NODEFER
  reiserfs: don't lock root inode searching
  reiserfs: don't lock journal_init()
  reiserfs: delay reiserfs lock until journal initialization
  reiserfs: delete comments referring to the BKL
  drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range
  drivers/rtc/rtc-twl.c: add DT support for RTC inside twl4030/twl6030
  drivers/rtc/: remove redundant spi driver bus initialization
  drivers/rtc/rtc-jz4740.c: make jz4740_rtc_driver static
  drivers/rtc/rtc-mc13xxx.c: make mc13xxx_rtc_idtable static
  rtc: convert drivers/rtc/* to use module_platform_driver()
  drivers/rtc/rtc-wm831x.c: convert to devm_kzalloc()
  drivers/rtc/rtc-wm831x.c: remove unused period IRQ handler
  ...

19 files changed, 100 insertions, 386 deletions

diff --git a/drivers/video/backlight/88pm860x_bl.c b/drivers/video/backlight/88pm860x_bl.c
index 1105fa1ed7f4..a1376dc73d71 100644
--- a/drivers/video/backlight/88pm860x_bl.c
+++ b/drivers/video/backlight/88pm860x_bl.c
@@ -270,17 +270,7 @@ static struct platform_driver pm860x_backlight_driver = {
 	.remove		= pm860x_backlight_remove,
 };
 
-static int __init pm860x_backlight_init(void)
-{
-	return platform_driver_register(&pm860x_backlight_driver);
-}
-module_init(pm860x_backlight_init);
-
-static void __exit pm860x_backlight_exit(void)
-{
-	platform_driver_unregister(&pm860x_backlight_driver);
-}
-module_exit(pm860x_backlight_exit);
+module_platform_driver(pm860x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Marvell Semiconductor 88PM8606");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig
index 278aeaa92505..681b36929fe4 100644
--- a/drivers/video/backlight/Kconfig
+++ b/drivers/video/backlight/Kconfig
@@ -280,14 +280,6 @@ config BACKLIGHT_WM831X
 	  If you have a backlight driven by the ISINK and DCDC of a
 	  WM831x PMIC say y to enable the backlight driver for it.
 
-config BACKLIGHT_ADX
-	tristate "Avionic Design Xanthos Backlight Driver"
-	depends on ARCH_PXA_ADX
-	default y
-	help
-	  Say Y to enable the backlight driver on Avionic Design Xanthos-based
-	  boards.
-
 config BACKLIGHT_ADP5520
 	tristate "Backlight Driver for ADP5520/ADP5501 using WLED"
 	depends on PMIC_ADP5520
diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile
index fdd1fc4b2770..af5cf654ec7c 100644
--- a/drivers/video/backlight/Makefile
+++ b/drivers/video/backlight/Makefile
@@ -32,7 +32,6 @@ obj-$(CONFIG_BACKLIGHT_APPLE)	+= apple_bl.o
 obj-$(CONFIG_BACKLIGHT_TOSA)	+= tosa_bl.o
 obj-$(CONFIG_BACKLIGHT_SAHARA)	+= kb3886_bl.o
 obj-$(CONFIG_BACKLIGHT_WM831X)	+= wm831x_bl.o
-obj-$(CONFIG_BACKLIGHT_ADX)    += adx_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP5520)	+= adp5520_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP8860)	+= adp8860_bl.o
 obj-$(CONFIG_BACKLIGHT_ADP8870)	+= adp8870_bl.o
diff --git a/drivers/video/backlight/adp5520_bl.c b/drivers/video/backlight/adp5520_bl.c
index dfb763e9147f..2e630bf1164c 100644
--- a/drivers/video/backlight/adp5520_bl.c
+++ b/drivers/video/backlight/adp5520_bl.c
@@ -384,17 +384,7 @@ static struct platform_driver adp5520_bl_driver = {
 	.resume		= adp5520_bl_resume,
 };
 
-static int __init adp5520_bl_init(void)
-{
-	return platform_driver_register(&adp5520_bl_driver);
-}
-module_init(adp5520_bl_init);
-
-static void __exit adp5520_bl_exit(void)
-{
-	platform_driver_unregister(&adp5520_bl_driver);
-}
-module_exit(adp5520_bl_exit);
+module_platform_driver(adp5520_bl_driver);
 
 MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
 MODULE_DESCRIPTION("ADP5520(01) Backlight Driver");
diff --git a/drivers/video/backlight/adx_bl.c b/drivers/video/backlight/adx_bl.c
deleted file mode 100644
index c861c41af442..000000000000
--- a/drivers/video/backlight/adx_bl.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * linux/drivers/video/backlight/adx.c
- *
- * Copyright (C) 2009 Avionic Design GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Written by Thierry Reding <thierry.reding@avionic-design.de>
- */
-
-#include <linux/backlight.h>
-#include <linux/fb.h>
-#include <linux/gfp.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-
-/* register definitions */
-#define ADX_BACKLIGHT_CONTROL		0x00
-#define ADX_BACKLIGHT_CONTROL_ENABLE	(1 << 0)
-#define ADX_BACKLIGHT_BRIGHTNESS	0x08
-#define ADX_BACKLIGHT_STATUS		0x10
-#define ADX_BACKLIGHT_ERROR		0x18
-
-struct adxbl {
-	void __iomem *base;
-};
-
-static int adx_backlight_update_status(struct backlight_device *bldev)
-{
-	struct adxbl *bl = bl_get_data(bldev);
-	u32 value;
-
-	value = bldev->props.brightness;
-	writel(value, bl->base + ADX_BACKLIGHT_BRIGHTNESS);
-
-	value = readl(bl->base + ADX_BACKLIGHT_CONTROL);
-
-	if (bldev->props.state & BL_CORE_FBBLANK)
-		value &= ~ADX_BACKLIGHT_CONTROL_ENABLE;
-	else
-		value |= ADX_BACKLIGHT_CONTROL_ENABLE;
-
-	writel(value, bl->base + ADX_BACKLIGHT_CONTROL);
-
-	return 0;
-}
-
-static int adx_backlight_get_brightness(struct backlight_device *bldev)
-{
-	struct adxbl *bl = bl_get_data(bldev);
-	u32 brightness;
-
-	brightness = readl(bl->base + ADX_BACKLIGHT_BRIGHTNESS);
-	return brightness & 0xff;
-}
-
-static int adx_backlight_check_fb(struct backlight_device *bldev, struct fb_info *fb)
-{
-	return 1;
-}
-
-static const struct backlight_ops adx_backlight_ops = {
-	.options = 0,
-	.update_status = adx_backlight_update_status,
-	.get_brightness = adx_backlight_get_brightness,
-	.check_fb = adx_backlight_check_fb,
-};
-
-static int __devinit adx_backlight_probe(struct platform_device *pdev)
-{
-	struct backlight_properties props;
-	struct backlight_device *bldev;
-	struct resource *res;
-	struct adxbl *bl;
-	int ret = 0;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	res = devm_request_mem_region(&pdev->dev, res->start,
-			resource_size(res), res->name);
-	if (!res) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	bl = devm_kzalloc(&pdev->dev, sizeof(*bl), GFP_KERNEL);
-	if (!bl) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	bl->base = devm_ioremap_nocache(&pdev->dev, res->start,
-			resource_size(res));
-	if (!bl->base) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-	memset(&props, 0, sizeof(struct backlight_properties));
-	props.type = BACKLIGHT_RAW;
-	props.max_brightness = 0xff;
-	bldev = backlight_device_register(dev_name(&pdev->dev), &pdev->dev,
-					  bl, &adx_backlight_ops, &props);
-	if (IS_ERR(bldev)) {
-		ret = PTR_ERR(bldev);
-		goto out;
-	}
-
-	bldev->props.brightness = 0xff;
-	bldev->props.power = FB_BLANK_UNBLANK;
-
-	platform_set_drvdata(pdev, bldev);
-
-out:
-	return ret;
-}
-
-static int __devexit adx_backlight_remove(struct platform_device *pdev)
-{
-	struct backlight_device *bldev;
-	int ret = 0;
-
-	bldev = platform_get_drvdata(pdev);
-	bldev->props.power = FB_BLANK_UNBLANK;
-	bldev->props.brightness = 0xff;
-	backlight_update_status(bldev);
-	backlight_device_unregister(bldev);
-	platform_set_drvdata(pdev, NULL);
-
-	return ret;
-}
-
-#ifdef CONFIG_PM
-static int adx_backlight_suspend(struct platform_device *pdev,
-		pm_message_t state)
-{
-	return 0;
-}
-
-static int adx_backlight_resume(struct platform_device *pdev)
-{
-	return 0;
-}
-#else
-#define adx_backlight_suspend NULL
-#define adx_backlight_resume NULL
-#endif
-
-static struct platform_driver adx_backlight_driver = {
-	.probe = adx_backlight_probe,
-	.remove = __devexit_p(adx_backlight_remove),
-	.suspend = adx_backlight_suspend,
-	.resume = adx_backlight_resume,
-	.driver = {
-		.name = "adx-backlight",
-		.owner = THIS_MODULE,
-	},
-};
-
-static int __init adx_backlight_init(void)
-{
-	return platform_driver_register(&adx_backlight_driver);
-}
-
-static void __exit adx_backlight_exit(void)
-{
-	platform_driver_unregister(&adx_backlight_driver);
-}
-
-module_init(adx_backlight_init);
-module_exit(adx_backlight_exit);
-
-MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
-MODULE_DESCRIPTION("Avionic Design Xanthos Backlight Driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index 7363c1b169e8..bf5b1ece7160 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -102,7 +102,7 @@ static void backlight_generate_event(struct backlight_device *bd,
 }
 
 static ssize_t backlight_show_power(struct device *dev,
-		struct device_attribute *attr,char *buf)
+		struct device_attribute *attr, char *buf)
 {
 	struct backlight_device *bd = to_backlight_device(dev);
 
@@ -116,7 +116,7 @@ static ssize_t backlight_store_power(struct device *dev,
 	struct backlight_device *bd = to_backlight_device(dev);
 	unsigned long power;
 
-	rc = strict_strtoul(buf, 0, &power);
+	rc = kstrtoul(buf, 0, &power);
 	if (rc)
 		return rc;
 
@@ -150,7 +150,7 @@ static ssize_t backlight_store_brightness(struct device *dev,
 	struct backlight_device *bd = to_backlight_device(dev);
 	unsigned long brightness;
 
-	rc = strict_strtoul(buf, 0, &brightness);
+	rc = kstrtoul(buf, 0, &brightness);
 	if (rc)
 		return rc;
 
diff --git a/drivers/video/backlight/da903x_bl.c b/drivers/video/backlight/da903x_bl.c
index d68f14bbb687..abb4a06268f1 100644
--- a/drivers/video/backlight/da903x_bl.c
+++ b/drivers/video/backlight/da903x_bl.c
@@ -199,17 +199,7 @@ static struct platform_driver da903x_backlight_driver = {
 	.remove		= da903x_backlight_remove,
 };
 
-static int __init da903x_backlight_init(void)
-{
-	return platform_driver_register(&da903x_backlight_driver);
-}
-module_init(da903x_backlight_init);
-
-static void __exit da903x_backlight_exit(void)
-{
-	platform_driver_unregister(&da903x_backlight_driver);
-}
-module_exit(da903x_backlight_exit);
+module_platform_driver(da903x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Dialog Semiconductor DA9030/DA9034");
 MODULE_AUTHOR("Eric Miao <eric.miao@marvell.com>"
diff --git a/drivers/video/backlight/ep93xx_bl.c b/drivers/video/backlight/ep93xx_bl.c
index c74a6f4baa12..b62b8b9063b5 100644
--- a/drivers/video/backlight/ep93xx_bl.c
+++ b/drivers/video/backlight/ep93xx_bl.c
@@ -13,7 +13,6 @@
 
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/module.h>
 #include <linux/io.h>
 #include <linux/fb.h>
 #include <linux/backlight.h>
@@ -144,17 +143,7 @@ static struct platform_driver ep93xxbl_driver = {
 	.resume		= ep93xxbl_resume,
 };
 
-static int __init ep93xxbl_init(void)
-{
-	return platform_driver_register(&ep93xxbl_driver);
-}
-module_init(ep93xxbl_init);
-
-static void __exit ep93xxbl_exit(void)
-{
-	platform_driver_unregister(&ep93xxbl_driver);
-}
-module_exit(ep93xxbl_exit);
+module_platform_driver(ep93xxbl_driver);
 
 MODULE_DESCRIPTION("EP93xx Backlight Driver");
 MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
diff --git a/drivers/video/backlight/generic_bl.c b/drivers/video/backlight/generic_bl.c
index adb191466d64..9ce6170c1860 100644
--- a/drivers/video/backlight/generic_bl.c
+++ b/drivers/video/backlight/generic_bl.c
@@ -132,18 +132,7 @@ static struct platform_driver genericbl_driver = {
 	},
 };
 
-static int __init genericbl_init(void)
-{
-	return platform_driver_register(&genericbl_driver);
-}
-
-static void __exit genericbl_exit(void)
-{
-	platform_driver_unregister(&genericbl_driver);
-}
-
-module_init(genericbl_init);
-module_exit(genericbl_exit);
+module_platform_driver(genericbl_driver);
 
 MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>");
 MODULE_DESCRIPTION("Generic Backlight Driver");
diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
index de65d80159be..2f8af5d786ab 100644
--- a/drivers/video/backlight/jornada720_bl.c
+++ b/drivers/video/backlight/jornada720_bl.c
@@ -147,19 +147,8 @@ static struct platform_driver jornada_bl_driver = {
 	},
 };
 
-static int __init jornada_bl_init(void)
-{
-	return platform_driver_register(&jornada_bl_driver);
-}
-
-static void __exit jornada_bl_exit(void)
-{
-	platform_driver_unregister(&jornada_bl_driver);
-}
+module_platform_driver(jornada_bl_driver);
 
 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson>");
 MODULE_DESCRIPTION("HP Jornada 710/720/728 Backlight driver");
 MODULE_LICENSE("GPL");
-
-module_init(jornada_bl_init);
-module_exit(jornada_bl_exit);
diff --git a/drivers/video/backlight/jornada720_lcd.c b/drivers/video/backlight/jornada720_lcd.c
index d2ff658b4144..22d231a17e3c 100644
--- a/drivers/video/backlight/jornada720_lcd.c
+++ b/drivers/video/backlight/jornada720_lcd.c
@@ -135,19 +135,8 @@ static struct platform_driver jornada_lcd_driver = {
 	},
 };
 
-static int __init jornada_lcd_init(void)
-{
-	return platform_driver_register(&jornada_lcd_driver);
-}
-
-static void __exit jornada_lcd_exit(void)
-{
-	platform_driver_unregister(&jornada_lcd_driver);
-}
+module_platform_driver(jornada_lcd_driver);
 
 MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
 MODULE_DESCRIPTION("HP Jornada 710/720/728 LCD driver");
 MODULE_LICENSE("GPL");
-
-module_init(jornada_lcd_init);
-module_exit(jornada_lcd_exit);
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c
index 71a11cadffc4..79c1b0d609a8 100644
--- a/drivers/video/backlight/lcd.c
+++ b/drivers/video/backlight/lcd.c
@@ -97,19 +97,16 @@ static ssize_t lcd_store_power(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int rc = -ENXIO;
-	char *endp;
 	struct lcd_device *ld = to_lcd_device(dev);
-	int power = simple_strtoul(buf, &endp, 0);
-	size_t size = endp - buf;
+	unsigned long power;
 
-	if (isspace(*endp))
-		size++;
-	if (size != count)
-		return -EINVAL;
+	rc = kstrtoul(buf, 0, &power);
+	if (rc)
+		return rc;
 
 	mutex_lock(&ld->ops_lock);
 	if (ld->ops && ld->ops->set_power) {
-		pr_debug("lcd: set power to %d\n", power);
+		pr_debug("lcd: set power to %lu\n", power);
 		ld->ops->set_power(ld, power);
 		rc = count;
 	}
@@ -136,19 +133,16 @@ static ssize_t lcd_store_contrast(struct device *dev,
 		struct device_attribute *attr, const char *buf, size_t count)
 {
 	int rc = -ENXIO;
-	char *endp;
 	struct lcd_device *ld = to_lcd_device(dev);
-	int contrast = simple_strtoul(buf, &endp, 0);
-	size_t size = endp - buf;
+	unsigned long contrast;
 
-	if (isspace(*endp))
-		size++;
-	if (size != count)
-		return -EINVAL;
+	rc = kstrtoul(buf, 0, &contrast);
+	if (rc)
+		return rc;
 
 	mutex_lock(&ld->ops_lock);
 	if (ld->ops && ld->ops->set_contrast) {
-		pr_debug("lcd: set contrast to %d\n", contrast);
+		pr_debug("lcd: set contrast to %lu\n", contrast);
 		ld->ops->set_contrast(ld, contrast);
 		rc = count;
 	}
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c
index da9a5ce0ccb8..78dafc0c8fc5 100644
--- a/drivers/video/backlight/ld9040.c
+++ b/drivers/video/backlight/ld9040.c
@@ -31,6 +31,7 @@
 #include <linux/lcd.h>
 #include <linux/backlight.h>
 #include <linux/module.h>
+#include <linux/regulator/consumer.h>
 
 #include "ld9040_gamma.h"
 
@@ -53,8 +54,51 @@ struct ld9040 {
 	struct lcd_device		*ld;
 	struct backlight_device		*bd;
 	struct lcd_platform_data	*lcd_pd;
+
+	struct mutex			lock;
+	bool  enabled;
+};
+
+static struct regulator_bulk_data supplies[] = {
+	{ .supply = "vdd3", },
+	{ .supply = "vci", },
 };
 
+static void ld9040_regulator_enable(struct ld9040 *lcd)
+{
+	int ret = 0;
+	struct lcd_platform_data *pd = NULL;
+
+	pd = lcd->lcd_pd;
+	mutex_lock(&lcd->lock);
+	if (!lcd->enabled) {
+		ret = regulator_bulk_enable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			goto out;
+
+		lcd->enabled = true;
+	}
+	mdelay(pd->power_on_delay);
+out:
+	mutex_unlock(&lcd->lock);
+}
+
+static void ld9040_regulator_disable(struct ld9040 *lcd)
+{
+	int ret = 0;
+
+	mutex_lock(&lcd->lock);
+	if (lcd->enabled) {
+		ret = regulator_bulk_disable(ARRAY_SIZE(supplies), supplies);
+		if (ret)
+			goto out;
+
+		lcd->enabled = false;
+	}
+out:
+	mutex_unlock(&lcd->lock);
+}
+
 static const unsigned short seq_swreset[] = {
 	0x01, COMMAND_ONLY,
 	ENDDEF, 0x00
@@ -532,13 +576,8 @@ static int ld9040_power_on(struct ld9040 *lcd)
 		return -EFAULT;
 	}
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else {
-		pd->power_on(lcd->ld, 1);
-		mdelay(pd->power_on_delay);
-	}
+	/* lcd power on */
+	ld9040_regulator_enable(lcd);
 
 	if (!pd->reset) {
 		dev_err(lcd->dev, "reset is NULL.\n");
@@ -582,11 +621,8 @@ static int ld9040_power_off(struct ld9040 *lcd)
 
 	mdelay(pd->power_off_delay);
 
-	if (!pd->power_on) {
-		dev_err(lcd->dev, "power_on is NULL.\n");
-		return -EFAULT;
-	} else
-		pd->power_on(lcd->ld, 0);
+	/* lcd power off */
+	ld9040_regulator_disable(lcd);
 
 	return 0;
 }
@@ -693,6 +729,14 @@ static int ld9040_probe(struct spi_device *spi)
 		goto out_free_lcd;
 	}
 
+	mutex_init(&lcd->lock);
+
+	ret = regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);
+	if (ret) {
+		dev_err(lcd->dev, "Failed to get regulators: %d\n", ret);
+		goto out_free_lcd;
+	}
+
 	ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);
 	if (IS_ERR(ld)) {
 		ret = PTR_ERR(ld);
@@ -739,6 +783,8 @@ static int ld9040_probe(struct spi_device *spi)
 out_unregister_lcd:
 	lcd_device_unregister(lcd->ld);
 out_free_lcd:
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
+
 	kfree(lcd);
 	return ret;
 }
@@ -750,6 +796,7 @@ static int __devexit ld9040_remove(struct spi_device *spi)
 	ld9040_power(lcd, FB_BLANK_POWERDOWN);
 	backlight_device_unregister(lcd->bd);
 	lcd_device_unregister(lcd->ld);
+	regulator_bulk_free(ARRAY_SIZE(supplies), supplies);
 	kfree(lcd);
 
 	return 0;
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 7bbc802560ea..c915e3b53886 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -188,17 +188,7 @@ static struct platform_driver max8925_backlight_driver = {
 	.remove		= __devexit_p(max8925_backlight_remove),
 };
 
-static int __init max8925_backlight_init(void)
-{
-	return platform_driver_register(&max8925_backlight_driver);
-}
-module_init(max8925_backlight_init);
-
-static void __exit max8925_backlight_exit(void)
-{
-	platform_driver_unregister(&max8925_backlight_driver);
-};
-module_exit(max8925_backlight_exit);
+module_platform_driver(max8925_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for Maxim MAX8925");
 MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
diff --git a/drivers/video/backlight/omap1_bl.c b/drivers/video/backlight/omap1_bl.c
index 08d26a72394c..d8cde277ec83 100644
--- a/drivers/video/backlight/omap1_bl.c
+++ b/drivers/video/backlight/omap1_bl.c
@@ -195,18 +195,7 @@ static struct platform_driver omapbl_driver = {
 	},
 };
 
-static int __init omapbl_init(void)
-{
-	return platform_driver_register(&omapbl_driver);
-}
-
-static void __exit omapbl_exit(void)
-{
-	platform_driver_unregister(&omapbl_driver);
-}
-
-module_init(omapbl_init);
-module_exit(omapbl_exit);
+module_platform_driver(omapbl_driver);
 
 MODULE_AUTHOR("Andrzej Zaborowski <balrog@zabor.org>");
 MODULE_DESCRIPTION("OMAP LCD Backlight driver");
diff --git a/drivers/video/backlight/pcf50633-backlight.c b/drivers/video/backlight/pcf50633-backlight.c
index ef5628d60563..13e88b71daec 100644
--- a/drivers/video/backlight/pcf50633-backlight.c
+++ b/drivers/video/backlight/pcf50633-backlight.c
@@ -173,17 +173,7 @@ static struct platform_driver pcf50633_bl_driver = {
 	},
 };
 
-static int __init pcf50633_bl_init(void)
-{
-	return platform_driver_register(&pcf50633_bl_driver);
-}
-module_init(pcf50633_bl_init);
-
-static void __exit pcf50633_bl_exit(void)
-{
-	platform_driver_unregister(&pcf50633_bl_driver);
-}
-module_exit(pcf50633_bl_exit);
+module_platform_driver(pcf50633_bl_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("PCF50633 backlight driver");
diff --git a/drivers/video/backlight/platform_lcd.c b/drivers/video/backlight/platform_lcd.c
index 302330acf628..f0bf491ed087 100644
--- a/drivers/video/backlight/platform_lcd.c
+++ b/drivers/video/backlight/platform_lcd.c
@@ -85,7 +85,8 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	plcd = kzalloc(sizeof(struct platform_lcd), GFP_KERNEL);
+	plcd = devm_kzalloc(&pdev->dev, sizeof(struct platform_lcd),
+			    GFP_KERNEL);
 	if (!plcd) {
 		dev_err(dev, "no memory for state\n");
 		return -ENOMEM;
@@ -98,7 +99,7 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 	if (IS_ERR(plcd->lcd)) {
 		dev_err(dev, "cannot register lcd device\n");
 		err = PTR_ERR(plcd->lcd);
-		goto err_mem;
+		goto err;
 	}
 
 	platform_set_drvdata(pdev, plcd);
@@ -106,8 +107,7 @@ static int __devinit platform_lcd_probe(struct platform_device *pdev)
 
 	return 0;
 
- err_mem:
-	kfree(plcd);
+ err:
 	return err;
 }
 
@@ -116,7 +116,6 @@ static int __devexit platform_lcd_remove(struct platform_device *pdev)
 	struct platform_lcd *plcd = platform_get_drvdata(pdev);
 
 	lcd_device_unregister(plcd->lcd);
-	kfree(plcd);
 
 	return 0;
 }
@@ -157,18 +156,7 @@ static struct platform_driver platform_lcd_driver = {
 	.resume         = platform_lcd_resume,
 };
 
-static int __init platform_lcd_init(void)
-{
-	return platform_driver_register(&platform_lcd_driver);
-}
-
-static void __exit platform_lcd_cleanup(void)
-{
-	platform_driver_unregister(&platform_lcd_driver);
-}
-
-module_init(platform_lcd_init);
-module_exit(platform_lcd_cleanup);
+module_platform_driver(platform_lcd_driver);
 
 MODULE_AUTHOR("Ben Dooks <ben-linux@fluff.org>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 8b5b2a4124c7..7496d04e1d3c 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -169,10 +169,9 @@ static int pwm_backlight_remove(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM
-static int pwm_backlight_suspend(struct platform_device *pdev,
-				 pm_message_t state)
+static int pwm_backlight_suspend(struct device *dev)
 {
-	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct backlight_device *bl = dev_get_drvdata(dev);
 	struct pwm_bl_data *pb = dev_get_drvdata(&bl->dev);
 
 	if (pb->notify)
@@ -184,40 +183,32 @@ static int pwm_backlight_suspend(struct platform_device *pdev,
 	return 0;
 }
 
-static int pwm_backlight_resume(struct platform_device *pdev)
+static int pwm_backlight_resume(struct device *dev)
 {
-	struct backlight_device *bl = platform_get_drvdata(pdev);
+	struct backlight_device *bl = dev_get_drvdata(dev);
 
 	backlight_update_status(bl);
 	return 0;
 }
-#else
-#define pwm_backlight_suspend	NULL
-#define pwm_backlight_resume	NULL
+
+static SIMPLE_DEV_PM_OPS(pwm_backlight_pm_ops, pwm_backlight_suspend,
+			 pwm_backlight_resume);
+
 #endif
 
 static struct platform_driver pwm_backlight_driver = {
 	.driver		= {
 		.name	= "pwm-backlight",
 		.owner	= THIS_MODULE,
+#ifdef CONFIG_PM
+		.pm	= &pwm_backlight_pm_ops,
+#endif
 	},
 	.probe		= pwm_backlight_probe,
 	.remove		= pwm_backlight_remove,
-	.suspend	= pwm_backlight_suspend,
-	.resume		= pwm_backlight_resume,
 };
 
-static int __init pwm_backlight_init(void)
-{
-	return platform_driver_register(&pwm_backlight_driver);
-}
-module_init(pwm_backlight_init);
-
-static void __exit pwm_backlight_exit(void)
-{
-	platform_driver_unregister(&pwm_backlight_driver);
-}
-module_exit(pwm_backlight_exit);
+module_platform_driver(pwm_backlight_driver);
 
 MODULE_DESCRIPTION("PWM based Backlight Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/video/backlight/wm831x_bl.c b/drivers/video/backlight/wm831x_bl.c
index fbe9e9316f3b..4e915f5eca99 100644
--- a/drivers/video/backlight/wm831x_bl.c
+++ b/drivers/video/backlight/wm831x_bl.c
@@ -236,17 +236,7 @@ static struct platform_driver wm831x_backlight_driver = {
 	.remove		= wm831x_backlight_remove,
 };
 
-static int __init wm831x_backlight_init(void)
-{
-	return platform_driver_register(&wm831x_backlight_driver);
-}
-module_init(wm831x_backlight_init);
-
-static void __exit wm831x_backlight_exit(void)
-{
-	platform_driver_unregister(&wm831x_backlight_driver);
-}
-module_exit(wm831x_backlight_exit);
+module_platform_driver(wm831x_backlight_driver);
 
 MODULE_DESCRIPTION("Backlight Driver for WM831x PMICs");
 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com");