Author: Andrew Johnson <anj@aps.anl.gov>
Date:   Thu Sep 7 13:48:39 2017 -0500

    Add dummy putValue methods to const link types
    
    Resolves http://www.aps.anl.gov/epics/core-talk/2017/msg00503.php

diff --git a/src/ioc/db/dbConstLink.c b/src/ioc/db/dbConstLink.c
index ffedce4..928dae9 100644
--- a/src/ioc/db/dbConstLink.c
+++ b/src/ioc/db/dbConstLink.c
@@ -211,6 +211,12 @@ static long dbConstGetValue(struct link *plink, short dbrType, void *pbuffer,
     return 0;
 }
 
+static long dbConstPutValue(struct link *plink, short dbrType,
+            const void *pbuffer, long nRequest)
+{
+    return 0;
+}
+
 static lset dbConst_lset = {
     1, 0, /* Constant, not Volatile */
     NULL, NULL,
@@ -223,6 +229,6 @@ static lset dbConst_lset = {
     NULL, NULL, NULL,
     NULL, NULL,
     NULL, NULL,
-    NULL, NULL,
+    dbConstPutValue, NULL,
     NULL, NULL
 };
diff --git a/src/std/link/lnkConst.c b/src/std/link/lnkConst.c
index db824ab..6a3dc5d 100644
--- a/src/std/link/lnkConst.c
+++ b/src/std/link/lnkConst.c
@@ -558,6 +558,12 @@ static long lnkConst_getValue(struct link *plink, short dbrType, void *pbuffer,
     return 0;
 }
 
+static long lnkConst_putValue(struct link *plink, short dbrType,
+            const void *pbuffer, long nRequest)
+{
+    return 0;
+}
+
 
 /************************* Interface Tables *************************/
 
@@ -569,7 +575,7 @@ static lset lnkConst_lset = {
     NULL, NULL, NULL,
     NULL, NULL,
     NULL, NULL,
-    NULL, NULL,
+    lnkConst_putValue, NULL,
     NULL, NULL
 };