1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c
index d3963199b6ec..af2934e016a7 100644
--- a/drivers/usb/misc/adutux.c
+++ b/drivers/usb/misc/adutux.c
@@ -177,7 +177,7 @@ static void adu_delete(struct adu_device *dev)
         dbg(2, "%s : leave", __FUNCTION__);
 }
 
-static void adu_interrupt_in_callback(struct urb *urb, struct pt_regs *regs)
+static void adu_interrupt_in_callback(struct urb *urb)
 {
         struct adu_device *dev = urb->context;
 
@@ -221,7 +221,7 @@ exit:
         dbg(4," %s : leave, status %d", __FUNCTION__, urb->status);
 }
 
-static void adu_interrupt_out_callback(struct urb *urb, struct pt_regs *regs)
+static void adu_interrupt_out_callback(struct urb *urb)
 {
         struct adu_device *dev = urb->context;
 
@@ -370,7 +370,8 @@ static int adu_release(struct inode *inode, struct file *file)
         retval = adu_release_internal(dev);
 
 exit:
-        up(&dev->sem);
+        if (dev)
+                up(&dev->sem);
         dbg(2," %s : leave, return value %d", __FUNCTION__, retval);
         return retval;
 }