Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks

1 files changed, 19 insertions, 17 deletions

diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index e7fbac52993..d962ba0dd87 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -19,16 +19,16 @@
 #include <linux/dcookies.h>
 #include <linux/fs.h>
 #include <asm/uaccess.h>
- 
+
 #include "oprof.h"
 #include "event_buffer.h"
 #include "oprofile_stats.h"
 
 DEFINE_MUTEX(buffer_mutex);
- 
+
 static unsigned long buffer_opened;
 static DECLARE_WAIT_QUEUE_HEAD(buffer_wait);
-static unsigned long * event_buffer;
+static unsigned long *event_buffer;
 static unsigned long buffer_size;
 static unsigned long buffer_watershed;
 static size_t buffer_pos;
@@ -66,7 +66,7 @@ void wake_up_buffer_waiter(void)
 	mutex_unlock(&buffer_mutex);
 }
 
- 
+
 int alloc_event_buffer(void)
 {
 	int err = -ENOMEM;
@@ -76,13 +76,13 @@ int alloc_event_buffer(void)
 	buffer_size = fs_buffer_size;
 	buffer_watershed = fs_buffer_watershed;
 	spin_unlock_irqrestore(&oprofilefs_lock, flags);
- 
+
 	if (buffer_watershed >= buffer_size)
 		return -EINVAL;
- 
+
 	event_buffer = vmalloc(sizeof(unsigned long) * buffer_size);
 	if (!event_buffer)
-		goto out; 
+		goto out;
 
 	err = 0;
 out:
@@ -93,10 +93,12 @@ out:
 void free_event_buffer(void)
 {
 	vfree(event_buffer);
+
+	event_buffer = NULL;
 }
 
- 
-static int event_buffer_open(struct inode * inode, struct file * file)
+
+static int event_buffer_open(struct inode *inode, struct file *file)
 {
 	int err = -EPERM;
 
@@ -114,14 +116,14 @@ static int event_buffer_open(struct inode * inode, struct file * file)
 	file->private_data = dcookie_register();
 	if (!file->private_data)
 		goto out;
-		 
+
 	if ((err = oprofile_setup()))
 		goto fail;
 
 	/* NB: the actual start happens from userspace
 	 * echo 1 >/dev/oprofile/enable
 	 */
- 
+
 	return 0;
 
 fail:
@@ -132,7 +134,7 @@ out:
 }
 
 
-static int event_buffer_release(struct inode * inode, struct file * file)
+static int event_buffer_release(struct inode *inode, struct file *file)
 {
 	oprofile_stop();
 	oprofile_shutdown();
@@ -144,8 +146,8 @@ static int event_buffer_release(struct inode * inode, struct file * file)
 }
 
 
-static ssize_t event_buffer_read(struct file * file, char __user * buf,
-				 size_t count, loff_t * offset)
+static ssize_t event_buffer_read(struct file *file, char __user *buf,
+				 size_t count, loff_t *offset)
 {
 	int retval = -EINVAL;
 	size_t const max = buffer_size * sizeof(unsigned long);
@@ -170,18 +172,18 @@ static ssize_t event_buffer_read(struct file * file, char __user * buf,
 	retval = -EFAULT;
 
 	count = buffer_pos * sizeof(unsigned long);
- 
+
 	if (copy_to_user(buf, event_buffer, count))
 		goto out;
 
 	retval = count;
 	buffer_pos = 0;
- 
+
 out:
 	mutex_unlock(&buffer_mutex);
 	return retval;
 }
- 
+
 const struct file_operations event_buffer_fops = {
 	.open		= event_buffer_open,
 	.release	= event_buffer_release,