diff --git a/[refs] b/[refs]
index 347c669ddbc0..dc8c14258745 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 33f7771411c1f815208f6593d8fde8f9a135cea5
+refs/heads/master: 63337dd3f5506628e4831b08e39e09d7f1407769
diff --git a/trunk/drivers/media/video/em28xx/em28xx-video.c b/trunk/drivers/media/video/em28xx/em28xx-video.c
index d3dd6a0fc8a1..0906bc5766cc 100644
--- a/trunk/drivers/media/video/em28xx/em28xx-video.c
+++ b/trunk/drivers/media/video/em28xx/em28xx-video.c
@@ -571,7 +571,9 @@ static void em28xx_vm_close(struct vm_area_struct *vma)
 {
 	/* NOTE: buffers are not freed here */
 	struct em28xx_frame_t *f = vma->vm_private_data;
-	f->vma_use_count--;
+
+	if (f->vma_use_count)
+		f->vma_use_count--;
 }
 
 static struct vm_operations_struct em28xx_vm_ops = {