1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/isdn/hysdn/hysdn_defs.h b/drivers/isdn/hysdn/hysdn_defs.h
index 461e831592dd..729df4089385 100644
--- a/drivers/isdn/hysdn/hysdn_defs.h
+++ b/drivers/isdn/hysdn/hysdn_defs.h
@@ -188,6 +188,8 @@ typedef struct HYSDN_CARD {
         /* init and deinit stopcard for booting, too */
         void (*stopcard) (struct HYSDN_CARD *);
         void (*releasehardware) (struct HYSDN_CARD *);
+
+        spinlock_t hysdn_lock;
 #ifdef CONFIG_HYSDN_CAPI
         struct hycapictrl_info {
                 char cardname[32];