mISDN: Fixed missing spin lock on pipeline process

[deliverable/linux.git] / include / linux / mISDNif.h

diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
index 557477ac3d5b509969060d748173626efddfe873..cf974593a99e7cbfaab3d1a7c5dabd11b0fe4d0e 100644 (file)
--- a/include/linux/mISDNif.h
+++ b/include/linux/mISDNif.h
@@ -362,7 +362,8 @@ clear_channelmap(u_int nr, u_char *map)
 #define MISDN_CTRL_HFC_RECEIVE_ON      0x4006
 #define MISDN_CTRL_HFC_ECHOCAN_ON      0x4007
 #define MISDN_CTRL_HFC_ECHOCAN_OFF     0x4008
-
+#define MISDN_CTRL_HFC_WD_INIT         0x4009
+#define MISDN_CTRL_HFC_WD_RESET                0x400A
 
 /* socket options */
 #define MISDN_TIME_STAMP               0x0001
@@ -559,7 +560,10 @@ extern void        mISDN_unregister_clock(struct mISDNclock *);
 
 static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
 {
-       return dev_get_drvdata(dev);
+       if (dev)
+               return dev_get_drvdata(dev);
+       else
+               return NULL;
 }
 
 extern void    set_channel_address(struct mISDNchannel *, u_int, u_int);