USB: Push BKL on open down into the drivers

Straightforward push into the drivers to allow
auditing individual drivers separately

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 867e08433e4b..433602aed468 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -265,9 +265,10 @@ static int hiddev_release(struct inode * inode, struct file * file)
 static int hiddev_open(struct inode *inode, struct file *file)
 {
         struct hiddev_list *list;
-        int res;
+        int res, i;
 
-        int i = iminor(inode) - HIDDEV_MINOR_BASE;
+        lock_kernel();
+        i = iminor(inode) - HIDDEV_MINOR_BASE;
 
         if (i >= HIDDEV_MINORS || i < 0 || !hiddev_table[i])
                 return -ENODEV;
@@ -313,10 +314,12 @@ static int hiddev_open(struct inode *inode, struct file *file)
                         usbhid_open(hid);
                 }
 
+        unlock_kernel();
         return 0;
 bail:
         file->private_data = NULL;
         kfree(list);
+        unlock_kernel();
         return res;
 }