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path: root/drivers/char/busmouse.c
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Diffstat (limited to 'drivers/char/busmouse.c')
-rw-r--r--drivers/char/busmouse.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/busmouse.c b/drivers/char/busmouse.c
index bc8345cff..9bfe4b2b3 100644
--- a/drivers/char/busmouse.c
+++ b/drivers/char/busmouse.c
@@ -19,6 +19,7 @@
#include <linux/miscdevice.h>
#include <linux/random.h>
#include <linux/init.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/system.h>
@@ -167,6 +168,7 @@ static int busmouse_release(struct inode *inode, struct file *file)
struct busmouse_data *mse = (struct busmouse_data *)file->private_data;
int ret = 0;
+ lock_kernel();
busmouse_fasync(-1, file, 0);
if (--mse->active == 0) {
@@ -178,6 +180,7 @@ static int busmouse_release(struct inode *inode, struct file *file)
}
mse->ready = 0;
}
+ unlock_kernel();
return ret;
}