1 files changed, 48 insertions, 4 deletions

diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 1cf382a0b277..46da365c9c84 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -16,6 +16,7 @@
 #include <linux/spinlock.h>
 #include <linux/delay.h>
 #include <linux/input.h>
+#include <linux/leds.h>
 #include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/module.h>
@@ -31,6 +32,7 @@
 /* Used to keep track of known keymaps */
 static LIST_HEAD(rc_map_list);
 static DEFINE_SPINLOCK(rc_map_lock);
+static struct led_trigger *led_feedback;
 
 static struct rc_map_list *seek_rc_map(const char *name)
 {
@@ -535,6 +537,7 @@ static void ir_do_keyup(struct rc_dev *dev, bool sync)
 
 	IR_dprintk(1, "keyup key 0x%04x\n", dev->last_keycode);
 	input_report_key(dev->input_dev, dev->last_keycode, 0);
+	led_trigger_event(led_feedback, LED_OFF);
 	if (sync)
 		input_sync(dev->input_dev);
 	dev->keypressed = false;
@@ -648,6 +651,7 @@ static void ir_do_keydown(struct rc_dev *dev, int scancode,
 		input_report_key(dev->input_dev, keycode, 1);
 	}
 
+	led_trigger_event(led_feedback, LED_FULL);
 	input_sync(dev->input_dev);
 }
 
@@ -699,19 +703,50 @@ void rc_keydown_notimeout(struct rc_dev *dev, int scancode, u8 toggle)
 }
 EXPORT_SYMBOL_GPL(rc_keydown_notimeout);
 
+int rc_open(struct rc_dev *rdev)
+{
+	int rval = 0;
+
+	if (!rdev)
+		return -EINVAL;
+
+	mutex_lock(&rdev->lock);
+	if (!rdev->users++ && rdev->open != NULL)
+		rval = rdev->open(rdev);
+
+	if (rval)
+		rdev->users--;
+
+	mutex_unlock(&rdev->lock);
+
+	return rval;
+}
+EXPORT_SYMBOL_GPL(rc_open);
+
 static int ir_open(struct input_dev *idev)
 {
 	struct rc_dev *rdev = input_get_drvdata(idev);
 
-	return rdev->open(rdev);
+	return rc_open(rdev);
+}
+
+void rc_close(struct rc_dev *rdev)
+{
+	if (rdev) {
+		mutex_lock(&rdev->lock);
+
+		 if (!--rdev->users && rdev->close != NULL)
+			rdev->close(rdev);
+
+		mutex_unlock(&rdev->lock);
+	}
 }
+EXPORT_SYMBOL_GPL(rc_close);
 
 static void ir_close(struct input_dev *idev)
 {
 	struct rc_dev *rdev = input_get_drvdata(idev);
-
-	 if (rdev)
-		rdev->close(rdev);
+	rc_close(rdev);
 }
 
 /* class for /sys/class/rc */
@@ -1076,7 +1111,14 @@ int rc_register_device(struct rc_dev *dev)
 	memcpy(&dev->input_dev->id, &dev->input_id, sizeof(dev->input_id));
 	dev->input_dev->phys = dev->input_phys;
 	dev->input_dev->name = dev->input_name;
+
+	/* input_register_device can call ir_open, so unlock mutex here */
+	mutex_unlock(&dev->lock);
+
 	rc = input_register_device(dev->input_dev);
+
+	mutex_lock(&dev->lock);
+
 	if (rc)
 		goto out_table;
 
@@ -1184,6 +1226,7 @@ static int __init rc_core_init(void)
 		return rc;
 	}
 
+	led_trigger_register_simple("rc-feedback", &led_feedback);
 	rc_map_register(&empty_map);
 
 	return 0;
@@ -1192,6 +1235,7 @@ static int __init rc_core_init(void)
 static void __exit rc_core_exit(void)
 {
 	class_unregister(&rc_class);
+	led_trigger_unregister_simple(led_feedback);
 	rc_map_unregister(&empty_map);
 }