Commit e676c232 authored by Jes Sorensen's avatar Jes Sorensen Committed by Dmitry Torokhov
Browse files

Input: input core - semaphore to mutex conversion 



Signed-off-by: default avatarJes Sorensen <jes@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 02860ab6

drivers/input/input.c

+8 −7
Original line number Diff line number Diff line
@@ -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);



	/*

include/linux/input.h

+1 −1
Original line number Diff line number Diff line
@@ -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;