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authorDmitry Torokhov <dmitry.torokhov@gmail.com>2008-07-21 00:55:14 -0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2008-07-21 00:55:14 -0400
commit908cf4b925e419bc74f3297b2f0e51d6f8a81da2 (patch)
tree6c2da79366d4695a9c2560ab18259eca8a2a25b4 /drivers/input/input.c
parent92c49890922d54cba4b1eadeb0b185773c2c9570 (diff)
parent14b395e35d1afdd8019d11b92e28041fad591b71 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next
Diffstat (limited to 'drivers/input/input.c')
-rw-r--r--drivers/input/input.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c
index cae48117e86..c13ced3e0d3 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -21,6 +21,7 @@
#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/rcupdate.h>
+#include <linux/smp_lock.h>
MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
MODULE_DESCRIPTION("Input core");
@@ -1588,13 +1589,17 @@ EXPORT_SYMBOL(input_unregister_handle);
static int input_open_file(struct inode *inode, struct file *file)
{
- struct input_handler *handler = input_table[iminor(inode) >> 5];
+ struct input_handler *handler;
const struct file_operations *old_fops, *new_fops = NULL;
int err;
+ lock_kernel();
/* No load-on-demand here? */
- if (!handler || !(new_fops = fops_get(handler->fops)))
- return -ENODEV;
+ handler = input_table[iminor(inode) >> 5];
+ if (!handler || !(new_fops = fops_get(handler->fops))) {
+ err = -ENODEV;
+ goto out;
+ }
/*
* That's _really_ odd. Usually NULL ->open means "nothing special",
@@ -1602,7 +1607,8 @@ static int input_open_file(struct inode *inode, struct file *file)
*/
if (!new_fops->open) {
fops_put(new_fops);
- return -ENODEV;
+ err = -ENODEV;
+ goto out;
}
old_fops = file->f_op;
file->f_op = new_fops;
@@ -1614,6 +1620,8 @@ static int input_open_file(struct inode *inode, struct file *file)
file->f_op = fops_get(old_fops);
}
fops_put(old_fops);
+out:
+ unlock_kernel();
return err;
}