input: allow NULL as XkbRMVLOSet in InitKeyboardDeviceStruct.

Virtually all callers use
    XkbGetRulesDefault(&rmlvo);
    InitKeyboardDeviceStruct(..., rmlvo);

Let's save them the trouble and accept NULL as a hint to take the
default RMLVO.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Benjamin Close <Benjamin.Close@clearchain.com>
Signed-off-by: Daniel Stone <daniel@fooishbar.org>

Xi/exevents.c

@@ -226,11 +226,7 @@ DeepCopyFeedbackClasses(DeviceIntPtr from, DeviceIntPtr to)
 
             to->kbdfeed = classes->kbdfeed;
             if (!to->kbdfeed)
-            {
-                XkbRMLVOSet rmlvo;
-                XkbGetRulesDflts(&rmlvo);
-                InitKeyboardDeviceStruct(to, &rmlvo, NULL, NULL);
-            }
+                InitKeyboardDeviceStruct(to, NULL, NULL, NULL);
         }
 
         k = &to->kbdfeed;
@@ -473,11 +469,8 @@ DeepCopyDeviceClasses(DeviceIntPtr from, DeviceIntPtr to)
                                        UnusedClassesPrivateKey);
             to->key = classes->key;
             if (!to->key)
-            {
-                XkbRMLVOSet rmlvo;
-                XkbGetRulesDflts(&rmlvo);
-                InitKeyboardDeviceStruct(to, &rmlvo, NULL, NULL);
-            } else
+                InitKeyboardDeviceStruct(to, NULL, NULL, NULL);
+            else
                 classes->key = NULL;
         }
 

dix/devices.c

@@ -471,12 +471,10 @@ CoreKeyboardCtl(DeviceIntPtr pDev, KeybdCtrl *ctrl)
 static int
 CoreKeyboardProc(DeviceIntPtr pDev, int what)
 {
-    XkbRMLVOSet rmlvo;
 
     switch (what) {
     case DEVICE_INIT:
-        XkbGetRulesDflts(&rmlvo);
-        if (!InitKeyboardDeviceStruct(pDev, &rmlvo, CoreKeyboardBell,
+        if (!InitKeyboardDeviceStruct(pDev, NULL, CoreKeyboardBell,
                                       CoreKeyboardCtl))
         {
             ErrorF("Keyboard initialization failed. This could be a missing "

hw/vfb/InitInput.c

@@ -66,13 +66,11 @@ static int
 vfbKeybdProc(DeviceIntPtr pDevice, int onoff)
 {
     DevicePtr pDev = (DevicePtr)pDevice;
-    XkbRMLVOSet rmlvo;
 
     switch (onoff)
     {
     case DEVICE_INIT:
-        XkbGetRulesDflts(&rmlvo);
-	InitKeyboardDeviceStruct(pDevice, &rmlvo, NULL, NULL);
+	InitKeyboardDeviceStruct(pDevice, NULL, NULL, NULL);
         break;
     case DEVICE_ON:
 	pDev->on = TRUE;

hw/xnest/Keyboard.c

@@ -121,7 +121,6 @@ xnestKeyboardProc(DeviceIntPtr pDev, int onoff)
   int i;
   XKeyboardState values;
   XkbDescPtr xkb;
-  XkbRMLVOSet rmlvo;
   int op, event, error, major, minor;
 
   switch (onoff)
@@ -165,13 +164,7 @@ xnestKeyboardProc(DeviceIntPtr pDev, int onoff)
       }
       XkbGetControls(xnestDisplay, XkbAllControlsMask, xkb);
 
-      rmlvo.rules = XKB_DFLT_RULES;
-      rmlvo.model = XKB_DFLT_MODEL;
-      rmlvo.layout = XKB_DFLT_LAYOUT;
-      rmlvo.variant = XKB_DFLT_VARIANT;
-      rmlvo.options = XKB_DFLT_OPTIONS;
-
-      InitKeyboardDeviceStruct(pDev, &rmlvo,
+      InitKeyboardDeviceStruct(pDev, NULL,
 			       xnestBell, xnestChangeKeyboardControl);
       XkbDDXChangeControls(pDev, xkb->ctrls, xkb->ctrls);
       XkbFreeKeyboard(xkb, 0, False);

hw/xquartz/quartzKeyboard.c

@@ -317,7 +317,6 @@ void DarwinKeyboardInit(DeviceIntPtr pDev) {
     XkbComponentNamesRec names;
     CFIndex value;
     BOOL ok;
-    XkbRMLVOSet rmlvo;
 
     // Open a shared connection to the HID System.
     // Note that the Event Status Driver is really just a wrapper
@@ -328,8 +327,7 @@ void DarwinKeyboardInit(DeviceIntPtr pDev) {
 
     bzero(&names, sizeof(names));
 
-    XkbGetRulesDflts(&rmlvo);
-    InitKeyboardDeviceStruct(pDev, &rmlvo, QuartzBell,
+    InitKeyboardDeviceStruct(pDev, NULL, QuartzBell,
                              DarwinChangeKeyboardControl);
 
     /* Get our key repeat settings from GlobalPreferences */

xkb/xkbInit.c

@@ -474,10 +474,18 @@ InitKeyboardDeviceStruct(DeviceIntPtr dev, XkbRMLVOSet *rmlvo,
     XkbSrvLedInfoPtr sli;
     XkbChangesRec changes;
     XkbEventCauseRec cause;
+    XkbRMLVOSet rmlvo_dflts = { NULL };
 
-    if (dev->key || dev->kbdfeed || !rmlvo)
+    if (dev->key || dev->kbdfeed)
 	return False;
 
+    if (!rmlvo)
+    {
+        rmlvo = &rmlvo_dflts;
+        XkbGetRulesDflts(rmlvo);
+    }
+
+
     memset(&changes, 0, sizeof(changes));
     XkbSetCauseUnknown(&cause);