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authorDavid S. Miller <davem@davemloft.net>2008-07-18 02:39:39 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-18 02:39:39 -0700
commit49997d75152b3d23c53b0fa730599f2f74c92c65 (patch)
tree46e93126170d02cfec9505172e545732c1b69656 /drivers/input/mousedev.c
parenta0c80b80e0fb48129e4e9d6a9ede914f9ff1850d (diff)
parent5b664cb235e97afbf34db9c4d77f08ebd725335e (diff)
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: Documentation/powerpc/booting-without-of.txt drivers/atm/Makefile drivers/net/fs_enet/fs_enet-main.c drivers/pci/pci-acpi.c net/8021q/vlan.c net/iucv/iucv.c
Diffstat (limited to 'drivers/input/mousedev.c')
-rw-r--r--drivers/input/mousedev.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index b989748598a..8137e50ded8 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -14,6 +14,7 @@
#define MOUSEDEV_MIX 31
#include <linux/slab.h>
+#include <linux/smp_lock.h>
#include <linux/poll.h>
#include <linux/module.h>
#include <linux/init.h>
@@ -545,16 +546,21 @@ static int mousedev_open(struct inode *inode, struct file *file)
if (i >= MOUSEDEV_MINORS)
return -ENODEV;
+ lock_kernel();
error = mutex_lock_interruptible(&mousedev_table_mutex);
- if (error)
+ if (error) {
+ unlock_kernel();
return error;
+ }
mousedev = mousedev_table[i];
if (mousedev)
get_device(&mousedev->dev);
mutex_unlock(&mousedev_table_mutex);
- if (!mousedev)
+ if (!mousedev) {
+ unlock_kernel();
return -ENODEV;
+ }
client = kzalloc(sizeof(struct mousedev_client), GFP_KERNEL);
if (!client) {
@@ -573,6 +579,7 @@ static int mousedev_open(struct inode *inode, struct file *file)
goto err_free_client;
file->private_data = client;
+ unlock_kernel();
return 0;
err_free_client:
@@ -580,6 +587,7 @@ static int mousedev_open(struct inode *inode, struct file *file)
kfree(client);
err_put_mousedev:
put_device(&mousedev->dev);
+ unlock_kernel();
return error;
}