Input: input core - semaphore to mutex conversion
Jes Sorensen [Sun, 19 Feb 2006 05:21:46 +0000 (00:21 -0500)]
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/input.c
include/linux/input.h

index 4fe3da3..3e22bb1 100644 (file)
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/device.h>
+#include <linux/mutex.h>
 
 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
 MODULE_DESCRIPTION("Input core");
@@ -224,7 +225,7 @@ int input_open_device(struct input_handle *handle)
        struct input_dev *dev = handle->dev;
        int err;
 
-       err = down_interruptible(&dev->sem);
+       err = mutex_lock_interruptible(&dev->mutex);
        if (err)
                return err;
 
@@ -236,7 +237,7 @@ int input_open_device(struct input_handle *handle)
        if (err)
                handle->open--;
 
-       up(&dev->sem);
+       mutex_unlock(&dev->mutex);
 
        return err;
 }
@@ -255,13 +256,13 @@ void input_close_device(struct input_handle *handle)
 
        input_release_device(handle);
 
-       down(&dev->sem);
+       mutex_lock(&dev->mutex);
 
        if (!--dev->users && dev->close)
                dev->close(dev);
        handle->open--;
 
-       up(&dev->sem);
+       mutex_unlock(&dev->mutex);
 }
 
 static void input_link_handle(struct input_handle *handle)
@@ -512,13 +513,13 @@ static ssize_t input_dev_show_##name(struct class_device *dev, char *buf) \
        struct input_dev *input_dev = to_input_dev(dev);                        \
        int retval;                                                             \
                                                                                \
-       retval = down_interruptible(&input_dev->sem);                           \
+       retval = mutex_lock_interruptible(&input_dev->mutex);                   \
        if (retval)                                                             \
                return retval;                                                  \
                                                                                \
        retval = sprintf(buf, "%s\n", input_dev->name ? input_dev->name : "");  \
                                                                                \
-       up(&input_dev->sem);                                                    \
+       mutex_unlock(&input_dev->mutex);                                        \
                                                                                \
        return retval;                                                          \
 }                                                                              \
@@ -790,7 +791,7 @@ int input_register_device(struct input_dev *dev)
                return -EINVAL;
        }
 
-       init_MUTEX(&dev->sem);
+       mutex_init(&dev->mutex);
        set_bit(EV_SYN, dev->evbit);
 
        /*
index 6d4cc3c..6dca6ba 100644 (file)
@@ -929,7 +929,7 @@ struct input_dev {
 
        struct input_handle *grab;
 
-       struct semaphore sem;   /* serializes open and close operations */
+       struct mutex mutex;     /* serializes open and close operations */
        unsigned int users;
 
        struct class_device cdev;