bluetooth-vhci: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/bluetooth/hci_vhci.c b/drivers/bluetooth/hci_vhci.c
index 0638730a4a19..7734bc9af3ca 100644
--- a/drivers/bluetooth/hci_vhci.c
+++ b/drivers/bluetooth/hci_vhci.c
@@ -28,6 +28,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
@@ -263,9 +264,11 @@ static int vhci_open(struct inode *inode, struct file *file)
         skb_queue_head_init(&data->readq);
         init_waitqueue_head(&data->read_wait);
 
+        lock_kernel();
         hdev = hci_alloc_dev();
         if (!hdev) {
                 kfree(data);
+                unlock_kernel();
                 return -ENOMEM;
         }
 
@@ -286,10 +289,12 @@ static int vhci_open(struct inode *inode, struct file *file)
                 BT_ERR("Can't register HCI device");
                 kfree(data);
                 hci_free_dev(hdev);
+                unlock_kernel();
                 return -EBUSY;
         }
 
         file->private_data = data;
+        unlock_kernel();
 
         return nonseekable_open(inode, file);
 }