Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
  leds/acpi: Fix merge fallout from acpi_driver_data change
  leds: Simplify logic in leds-ams-delta
  leds: Fix trigger registration race
  leds: Fix leds-class.c comment
  leds: Add driver for HP harddisk protection LEDs
  leds: leds-pca955x - Mark pca955x_led_set() static
  leds: Remove uneeded leds-cm-x270 driver
  leds: Remove uneeded strlen calls
  leds: Add leds-wrap default-trigger
  leds: Make default trigger fields const
  leds: Add backlight LED trigger
  leds: da903x: Add support for LEDs found on DA9030/DA9034

Author: torvalds

drivers/leds/Kconfig

@@ -113,11 +113,12 @@ config LEDS_GPIO
 	  outputs. To be useful the particular board must have LEDs
 	  and they must be connected to the GPIO lines.
 
-config LEDS_CM_X270
-	tristate "LED Support for the CM-X270 LEDs"
-	depends on LEDS_CLASS && MACH_ARMCORE
+config LEDS_HP_DISK
+	tristate "LED Support for disk protection LED on HP notebooks"
+	depends on LEDS_CLASS && ACPI
 	help
-	  This option enables support for the CM-X270 LEDs.
+	  This option enable support for disk protection LED, found on
+	  newer HP notebooks.
 
 config LEDS_CLEVO_MAIL
 	tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
@@ -157,6 +158,13 @@ config LEDS_PCA955X
 	  LED driver chips accessed via the I2C bus.  Supported
 	  devices include PCA9550, PCA9551, PCA9552, and PCA9553.
 
+config LEDS_DA903X
+	tristate "LED Support for DA9030/DA9034 PMIC"
+	depends on LEDS_CLASS && PMIC_DA903X
+	help
+	  This option enables support for on-chip LED drivers found
+	  on Dialog Semiconductor DA9030/DA9034 PMICs.
+
 comment "LED Triggers"
 
 config LEDS_TRIGGERS
@@ -193,6 +201,15 @@ config LEDS_TRIGGER_HEARTBEAT
 	  load average.
 	  If unsure, say Y.
 
+config LEDS_TRIGGER_BACKLIGHT
+	tristate "LED backlight Trigger"
+	depends on LEDS_TRIGGERS
+	help
+	  This allows LEDs to be controlled as a backlight device: they
+	  turn off and on when the display is blanked and unblanked.
+
+	  If unsure, say N.
+
 config LEDS_TRIGGER_DEFAULT_ON
 	tristate "LED Default ON Trigger"
 	depends on LEDS_TRIGGERS

drivers/leds/Makefile

@@ -17,14 +17,16 @@ obj-$(CONFIG_LEDS_COBALT_RAQ)		+= leds-cobalt-raq.o
 obj-$(CONFIG_LEDS_SUNFIRE)		+= leds-sunfire.o
 obj-$(CONFIG_LEDS_PCA9532)		+= leds-pca9532.o
 obj-$(CONFIG_LEDS_GPIO)			+= leds-gpio.o
-obj-$(CONFIG_LEDS_CM_X270)              += leds-cm-x270.o
 obj-$(CONFIG_LEDS_CLEVO_MAIL)		+= leds-clevo-mail.o
 obj-$(CONFIG_LEDS_HP6XX)		+= leds-hp6xx.o
 obj-$(CONFIG_LEDS_FSG)			+= leds-fsg.o
 obj-$(CONFIG_LEDS_PCA955X)		+= leds-pca955x.o
+obj-$(CONFIG_LEDS_DA903X)		+= leds-da903x.o
+obj-$(CONFIG_LEDS_HP_DISK)		+= leds-hp-disk.o
 
 # LED Triggers
 obj-$(CONFIG_LEDS_TRIGGER_TIMER)	+= ledtrig-timer.o
 obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK)	+= ledtrig-ide-disk.o
 obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT)	+= ledtrig-heartbeat.o
+obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT)	+= ledtrig-backlight.o
 obj-$(CONFIG_LEDS_TRIGGER_DEFAULT_ON)	+= ledtrig-default-on.o

drivers/leds/led-class.c

@@ -34,14 +34,11 @@ static ssize_t led_brightness_show(struct device *dev,
 		struct device_attribute *attr, char *buf)
 {
 	struct led_classdev *led_cdev = dev_get_drvdata(dev);
-	ssize_t ret = 0;
 
 	/* no lock needed for this */
 	led_update_brightness(led_cdev);
-	sprintf(buf, "%u\n", led_cdev->brightness);
-	ret = strlen(buf) + 1;
 
-	return ret;
+	return sprintf(buf, "%u\n", led_cdev->brightness);
 }
 
 static ssize_t led_brightness_store(struct device *dev,
@@ -113,6 +110,9 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
 	if (rc)
 		goto err_out;
 
+#ifdef CONFIG_LEDS_TRIGGERS
+	init_rwsem(&led_cdev->trigger_lock);
+#endif
 	/* add to the list of leds */
 	down_write(&leds_list_lock);
 	list_add_tail(&led_cdev->node, &leds_list);
@@ -121,8 +121,6 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
 	led_update_brightness(led_cdev);
 
 #ifdef CONFIG_LEDS_TRIGGERS
-	init_rwsem(&led_cdev->trigger_lock);
-
 	rc = device_create_file(led_cdev->dev, &dev_attr_trigger);
 	if (rc)
 		goto err_out_led_list;
@@ -147,7 +145,7 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
 EXPORT_SYMBOL_GPL(led_classdev_register);
 
 /**
- * __led_classdev_unregister - unregisters a object of led_properties class.
+ * led_classdev_unregister - unregisters a object of led_properties class.
  * @led_cdev: the led device to unregister
  *
  * Unregisters a previously registered via led_classdev_register object.

drivers/leds/leds-ams-delta.c

@@ -107,27 +107,27 @@ static int ams_delta_led_resume(struct platform_device *dev)
 
 static int ams_delta_led_probe(struct platform_device *pdev)
 {
-	int i;
-	int ret;
+	int i, ret;
 
-	for (i = ret = 0; ret >= 0 && i < ARRAY_SIZE(ams_delta_leds); i++) {
+	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i++) {
 		ret = led_classdev_register(&pdev->dev,
 				&ams_delta_leds[i].cdev);
+		if (ret < 0)
+			goto fail;
 	}
 
-	if (ret < 0 && i > 1) {
-		for (i = i - 2; i >= 0; i--)
-			led_classdev_unregister(&ams_delta_leds[i].cdev);
-	}
-
-	return ret;
+	return 0;
+fail:
+	while (--i >= 0)
+		led_classdev_unregister(&ams_delta_leds[i].cdev);
+	return ret;	
 }
 
 static int ams_delta_led_remove(struct platform_device *pdev)
 {
 	int i;
 
-	for (i = ARRAY_SIZE(ams_delta_leds) - 1; i >= 0; i--)
+	for (i = 0; i < ARRAY_SIZE(ams_delta_leds); i--)
 		led_classdev_unregister(&ams_delta_leds[i].cdev);
 
 	return 0;