diff -ruN vdr-sc/cam.c vdr-sc-build/cam.c
--- vdr-sc/cam.c	2018-03-05 19:08:36.744797044 +0100
+++ vdr-sc-build/cam.c	2018-03-05 19:09:46.336267614 +0100
@@ -2187,7 +2187,10 @@
   if(caidTimer.TimedOut() || force || (rebuildcaids && triggerTimer.TimedOut())) {
     PRINTF(L_CORE_CAIDS,"%s: building caid lists",devId);
     cChannelList list(devId);
+
+
     {
+#if VDRVERSNUM >= 20301
     LOCK_CHANNELS_READ;
     for(const cChannel *channel=Channels->First(); channel; channel=Channels->Next(channel)) {
       if(!channel->GroupSep() && channel->Ca()>=CA_ENCRYPTED_MIN && device->ProvidesTransponder(channel)) {
@@ -2195,7 +2198,18 @@
         if(ch) list.Add(ch);
         }
       }
+#else
+    Channels.Lock(false);
+    for(const cChannel *channel=Channels.First(); channel; channel=Channels.Next(channel)) {
+      if(!channel->GroupSep() && channel->Ca()>=CA_ENCRYPTED_MIN && device->ProvidesTransponder(channel)) {
+        cChannelCaids *ch=new cChannelCaids(channel);
+        if(ch) list.Add(ch);
+        }
+      }
+Channels.Unlock();
+#endif
     }
+
     list.Unique(true);
     list.CheckIgnore();
     list.Unique(false);
diff -ruN vdr-sc/cam.h vdr-sc-build/cam.h
--- vdr-sc/cam.h	2018-03-05 19:08:36.744797044 +0100
+++ vdr-sc-build/cam.h	2018-03-05 19:09:46.336267614 +0100
@@ -59,6 +59,15 @@
 
 // ----------------------------------------------------------------
 
+#ifndef CA_SET_PID /* removed in kernel 4.14 */
+typedef struct ca_pid {
+        unsigned int pid;
+        int index;          /* -1 == disable */
+} ca_pid_t;
+#define CA_SET_PID _IOW('o', 135, struct ca_pid)
+#endif
+
+
 #ifndef SASC
 class cCiFrame {
 private:

diff -ruN vdr-sc/device.h vdr-sc-build/device.h
--- vdr-sc/device.h	2018-03-05 19:08:36.784792143 +0100
+++ vdr-sc-build/device.h	2018-03-05 19:13:34.758255034 +0100
@@ -51,6 +51,14 @@
 #define DVB_DEV_SPEC CardIndex(),0
 #endif
 
+#ifndef CA_SET_PID /* removed in kernel 4.14 */
+typedef struct ca_pid {
+        unsigned int pid;
+        int index;          /* -1 == disable */
+} ca_pid_t;
+#define CA_SET_PID _IOW('o', 135, struct ca_pid)
+#endif
+
 // ----------------------------------------------------------------
 
 #ifndef SASC