Hi,
Relative to Linus' git tree.
Cheers,
Jes
Use mutex instead of semaphore.
Signed-off-by: Jes Sorensen <[email protected]>
----
drivers/input/input.c | 15 ++++++++-------
include/linux/input.h | 2 +-
2 files changed, 9 insertions(+), 8 deletions(-)
Index: linux-2.6/drivers/input/input.c
===================================================================
--- linux-2.6.orig/drivers/input/input.c
+++ linux-2.6/drivers/input/input.c
@@ -21,6 +21,7 @@
#include <linux/interrupt.h>
#include <linux/poll.h>
#include <linux/device.h>
+#include <linux/mutex.h>
MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
MODULE_DESCRIPTION("Input core");
@@ -224,7 +225,7 @@
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 @@
if (err)
handle->open--;
- up(&dev->sem);
+ mutex_unlock(&dev->mutex);
return err;
}
@@ -255,13 +256,13 @@
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 @@
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; \
} \
@@ -771,7 +772,7 @@
return -EINVAL;
}
- init_MUTEX(&dev->sem);
+ mutex_init(&dev->mutex);
set_bit(EV_SYN, dev->evbit);
/*
Index: linux-2.6/include/linux/input.h
===================================================================
--- linux-2.6.orig/include/linux/input.h
+++ linux-2.6/include/linux/input.h
@@ -929,7 +929,7 @@
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;
-
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