HID: cdev lock_kernel() pushdown

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 1ca6f4635eeb..2fde6c63f47d 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -30,6 +30,7 @@
 #include <linux/major.h>
 #include <linux/hid.h>
 #include <linux/mutex.h>
+#include <linux/smp_lock.h>
 
 #include <linux/hidraw.h>
 
@@ -157,6 +158,7 @@ static int hidraw_open(struct inode *inode, struct file *file)
         struct hidraw_list *list;
         int err = 0;
 
+        lock_kernel();
         if (!(list = kzalloc(sizeof(struct hidraw_list), GFP_KERNEL))) {
                 err = -ENOMEM;
                 goto out;
@@ -183,6 +185,7 @@ static int hidraw_open(struct inode *inode, struct file *file)
 out_unlock:
         spin_unlock(&minors_lock);
 out:
+        unlock_kernel();
         return err;
 
 }