Attachment 7437 Details for Bug 8663 – Proposed locking cleanup for libXi

[patch] Proposed locking cleanup for libXi

clean-locking.patch (text/plain), 21.70 KB, created by Magnus Kessler on 2006-10-16 14:22:31 UTC

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Filename:

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Creator: Magnus Kessler

Created: 2006-10-16 14:22:31 UTC

Size: 21.70 KB

patch

obsolete

>diff --git a/src/XAllowDv.c b/src/XAllowDv.c
>index 7fd2a07..c4a786b 100644
>--- a/src/XAllowDv.c
>+++ b/src/XAllowDv.c
>@@ -71,8 +71,11 @@ XAllowDeviceEvents(dpy, dev, event_mode,
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(AllowDeviceEvents, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XChgDCtl.c b/src/XChgDCtl.c
>index 9e71475..5f1b087 100644
>--- a/src/XChgDCtl.c
>+++ b/src/XChgDCtl.c
>@@ -71,11 +71,15 @@ XChangeDeviceControl(dpy, dev, control, 
>     int length;
>     xChangeDeviceControlReq *req;
>     xChangeDeviceControlReply rep;
>+    int status = NoSuchExtension;
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangeDeviceControl, req);
>     req->reqType = info->codes->major_opcode;
>@@ -100,12 +104,10 @@ XChangeDeviceControl(dpy, dev, control, 
> 	Data(dpy, (char *)&r, length);
> 	length = r.num_valuators * sizeof(int);
> 	Data(dpy, (char *)R->resolutions, length);
>-	if (!_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
>-	    UnlockDisplay(dpy);
>-	    SyncHandle();
>-	    return (NoSuchExtension);
>-	} else
>-	    return (rep.status);
>+	if (_XReply(dpy, (xReply *) & rep, 0, xTrue)) {
>+	    status = rep.status;
>+	}
>+	break;
>     }
>     case DEVICE_TOUCHSCREEN:
>     {
>@@ -123,14 +125,10 @@ XChangeDeviceControl(dpy, dev, control, 
>         req->length += (sizeof(t) + 3) >> 2;
>         Data(dpy, (char *) &t, sizeof(t));
> 
>-        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
>-            UnlockDisplay(dpy);
>-            SyncHandle();
>-            return NoSuchExtension;
>-        }
>-        else {
>-            return rep.status;
>+        if (_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
>+	    status = rep.status
>         }
>+	break;
>     }
>     case DEVICE_CORE:
>     {
>@@ -144,14 +142,10 @@ XChangeDeviceControl(dpy, dev, control, 
>         req->length += (sizeof(c) + 3) >> 2;
>         Data (dpy, (char *) &c, sizeof(c));
> 
>-        if (!_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
>-            UnlockDisplay(dpy);
>-            SyncHandle();
>-            return NoSuchExtension;
>-        }
>-        else {
>-            return rep.status;
>+        if (_XReply(dpy, (xReply *) &rep, 0, xTrue)) {
>+	    status = rep.status;
>         }
>+	break;
>     }
>     default:
>     {
>@@ -163,10 +157,11 @@ XChangeDeviceControl(dpy, dev, control, 
> 	req->length += length;
> 	length <<= 2;
> 	Data(dpy, (char *)&u, length);
>+	status = Success;
>     }
>     }
> 
>     UnlockDisplay(dpy);
>     SyncHandle();
>-    return (Success);
>+    return (status);
> }
>diff --git a/src/XChgFCtl.c b/src/XChgFCtl.c
>index e499b41..74e5c40 100644
>--- a/src/XChgFCtl.c
>+++ b/src/XChgFCtl.c
>@@ -73,8 +73,11 @@ XChangeFeedbackControl(dpy, dev, mask, f
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangeFeedbackControl, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XChgKMap.c b/src/XChgKMap.c
>index 73de754..8447a39 100644
>--- a/src/XChgKMap.c
>+++ b/src/XChgKMap.c
>@@ -74,8 +74,11 @@ XChangeDeviceKeyMapping(dpy, dev, first,
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangeDeviceKeyMapping, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XChgKbd.c b/src/XChgKbd.c
>index 1b01207..6bfc251 100644
>--- a/src/XChgKbd.c
>+++ b/src/XChgKbd.c
>@@ -70,8 +70,11 @@ XChangeKeyboardDevice(dpy, dev)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangeKeyboardDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XChgPnt.c b/src/XChgPnt.c
>index 6123398..a533871 100644
>--- a/src/XChgPnt.c
>+++ b/src/XChgPnt.c
>@@ -72,8 +72,11 @@ XChangePointerDevice(dpy, dev, xaxis, ya
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangePointerDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XChgProp.c b/src/XChgProp.c
>index 0c7377f..1db6087 100644
>--- a/src/XChgProp.c
>+++ b/src/XChgProp.c
>@@ -73,8 +73,11 @@ XChangeDeviceDontPropagateList(dpy, wind
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(ChangeDeviceDontPropagateList, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XCloseDev.c b/src/XCloseDev.c
>index ca19860..36a035c 100644
>--- a/src/XCloseDev.c
>+++ b/src/XCloseDev.c
>@@ -69,8 +69,11 @@ XCloseDevice(dpy, dev)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(CloseDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XDevBell.c b/src/XDevBell.c
>index 73f2e35..44a0b85 100644
>--- a/src/XDevBell.c
>+++ b/src/XDevBell.c
>@@ -71,8 +71,11 @@ XDeviceBell(dpy, dev, feedbackclass, fee
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Add_XDeviceBell, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Add_XDeviceBell, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(DeviceBell, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XExtInt.c b/src/XExtInt.c
>index b7297dc..2bfa368 100644
>--- a/src/XExtInt.c
>+++ b/src/XExtInt.c
>@@ -203,7 +203,6 @@ _XiCheckExtInit(dpy, version_index, info
>     if (info->data == NULL) {
> 	info->data = (XPointer) Xmalloc(sizeof(XInputData));
> 	if (!info->data) {
>-	    UnlockDisplay(dpy);
> 	    return (-1);
> 	}
> 	((XInputData *) info->data)->vers =
>@@ -215,7 +214,6 @@ _XiCheckExtInit(dpy, version_index, info
> 	if ((ext->major_version < versions[version_index].major_version) ||
> 	    ((ext->major_version == versions[version_index].major_version) &&
> 	     (ext->minor_version < versions[version_index].minor_version))) {
>-	    UnlockDisplay(dpy);
> 	    return (-1);
> 	}
>     }
>diff --git a/src/XGMotion.c b/src/XGMotion.c
>index daa8792..d7d17c2 100644
>--- a/src/XGMotion.c
>+++ b/src/XGMotion.c
>@@ -85,8 +85,11 @@ Time stop;
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XDeviceTimeCoord *) NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceMotionEvents, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetBMap.c b/src/XGetBMap.c
>index 15cad74..440c34c 100644
>--- a/src/XGetBMap.c
>+++ b/src/XGetBMap.c
>@@ -81,8 +81,12 @@ XGetDeviceButtonMapping(dpy, device, map
>     xGetDeviceButtonMappingReply rep;
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
>+
>     GetReq(GetDeviceButtonMapping, req);
> 
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetDCtl.c b/src/XGetDCtl.c
>index 8d034bf..cc44c97 100644
>--- a/src/XGetDCtl.c
>+++ b/src/XGetDCtl.c
>@@ -78,8 +78,11 @@ XGetDeviceControl(dpy, dev, control)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Add_XChangeDeviceControl, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XDeviceControl *) NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceControl, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetFCtl.c b/src/XGetFCtl.c
>index af4578c..3e58ebe 100644
>--- a/src/XGetFCtl.c
>+++ b/src/XGetFCtl.c
>@@ -78,8 +78,11 @@ XGetFeedbackControl(dpy, dev, num_feedba
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XFeedbackState *) NoSuchExtension);
>+    }
> 
>     GetReq(GetFeedbackControl, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetKMap.c b/src/XGetKMap.c
>index 0381e86..67cb339 100644
>--- a/src/XGetKMap.c
>+++ b/src/XGetKMap.c
>@@ -76,8 +76,11 @@ #endif
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((KeySym *) NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceKeyMapping, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetMMap.c b/src/XGetMMap.c
>index ef92281..1822156 100644
>--- a/src/XGetMMap.c
>+++ b/src/XGetMMap.c
>@@ -72,8 +72,11 @@ XGetDeviceModifierMapping(dpy, dev)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XModifierKeymap *) NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceModifierMapping, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetProp.c b/src/XGetProp.c
>index 71d844b..fc3c95a 100644
>--- a/src/XGetProp.c
>+++ b/src/XGetProp.c
>@@ -75,8 +75,11 @@ Window window;
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XEventClass *) NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceDontPropagateList, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGetVers.c b/src/XGetVers.c
>index d3c765a..7e750a4 100644
>--- a/src/XGetVers.c
>+++ b/src/XGetVers.c
>@@ -67,11 +67,15 @@ XGetExtensionVersion(register Display * 
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    ext = _XiGetExtensionVersion(dpy, name, info);
>-    if (ext != (XExtensionVersion *) NoSuchExtension) {
>+    if (_XiCheckExtInit(dpy, Dont_Check, info) == -1) {
> 	UnlockDisplay(dpy);
> 	SyncHandle();
>+	return (XExtensionVersion *) NULL;
>     }
>+
>+    ext = _XiGetExtensionVersion(dpy, name, info);
>+    UnlockDisplay(dpy);
>+    SyncHandle();
>     return (ext);
> }
> 
>@@ -82,9 +86,6 @@ _XiGetExtensionVersion(register Display 
>     xGetExtensionVersionReply rep;
>     XExtensionVersion *ext;
> 
>-    if (_XiCheckExtInit(dpy, Dont_Check, info) == -1)
>-	return ((XExtensionVersion *) NoSuchExtension);
>-
>     GetReq(GetExtensionVersion, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_GetExtensionVersion;
>diff --git a/src/XGrDvBut.c b/src/XGrDvBut.c
>index 6e35099..a2da116 100644
>--- a/src/XGrDvBut.c
>+++ b/src/XGrDvBut.c
>@@ -80,8 +80,11 @@ XGrabDeviceButton(dpy, dev, button, modi
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(GrabDeviceButton, req);
> 
>diff --git a/src/XGrDvKey.c b/src/XGrDvKey.c
>index 1389753..ef0253b 100644
>--- a/src/XGrDvKey.c
>+++ b/src/XGrDvKey.c
>@@ -80,8 +80,11 @@ XGrabDeviceKey(dpy, dev, key, modifiers,
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(GrabDeviceKey, req);
> 
>diff --git a/src/XGrabDev.c b/src/XGrabDev.c
>index 92f1c11..7bb8c1c 100644
>--- a/src/XGrabDev.c
>+++ b/src/XGrabDev.c
>@@ -78,8 +78,11 @@ XGrabDevice(dpy, dev, grab_window, owner
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(GrabDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGtFocus.c b/src/XGtFocus.c
>index 4e63918..afaa6ff 100644
>--- a/src/XGtFocus.c
>+++ b/src/XGtFocus.c
>@@ -73,8 +73,11 @@ XGetDeviceFocus(dpy, dev, focus, revert_
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(GetDeviceFocus, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XGtSelect.c b/src/XGtSelect.c
>index 9f596fd..9ec98ba 100644
>--- a/src/XGtSelect.c
>+++ b/src/XGtSelect.c
>@@ -76,10 +76,13 @@ XGetSelectedExtensionEvents(dpy, w, this
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>-    GetReq(GetSelectedExtensionEvents, req);
>+    }
> 
>+    GetReq(GetSelectedExtensionEvents, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_GetSelectedExtensionEvents;
>     req->window = w;
>diff --git a/src/XListDev.c b/src/XListDev.c
>index b9a617d..37c5b0e 100644
>--- a/src/XListDev.c
>+++ b/src/XListDev.c
>@@ -82,8 +82,11 @@ XListInputDevices(dpy, ndevices)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XDeviceInfo *) NULL);
>+    }
> 
>     GetReq(ListInputDevices, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XOpenDev.c b/src/XOpenDev.c
>index d220330..7dcd15a 100644
>--- a/src/XOpenDev.c
>+++ b/src/XOpenDev.c
>@@ -72,8 +72,11 @@ XOpenDevice(dpy, id)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XDevice *) NoSuchExtension);
>+    }
> 
>     GetReq(OpenDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XQueryDv.c b/src/XQueryDv.c
>index 540f224..b2f665d 100644
>--- a/src/XQueryDv.c
>+++ b/src/XQueryDv.c
>@@ -76,8 +76,11 @@ XQueryDeviceState(dpy, dev)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return ((XDeviceState *) NoSuchExtension);
>+    }
> 
>     GetReq(QueryDeviceState, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XSelect.c b/src/XSelect.c
>index af0fb84..4784520 100644
>--- a/src/XSelect.c
>+++ b/src/XSelect.c
>@@ -71,10 +71,13 @@ XSelectExtensionEvent(dpy, w, event_list
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>-    GetReq(SelectExtensionEvent, req);
>+    }
> 
>+    GetReq(SelectExtensionEvent, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_SelectExtensionEvent;
>     req->window = w;
>diff --git a/src/XSetBMap.c b/src/XSetBMap.c
>index cad6976..de22eb1 100644
>--- a/src/XSetBMap.c
>+++ b/src/XSetBMap.c
>@@ -75,8 +75,12 @@ XSetDeviceButtonMapping(dpy, device, map
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
>+
>     GetReq(SetDeviceButtonMapping, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_SetDeviceButtonMapping;
>diff --git a/src/XSetDVal.c b/src/XSetDVal.c
>index 43702b0..bbff59f 100644
>--- a/src/XSetDVal.c
>+++ b/src/XSetDVal.c
>@@ -74,8 +74,11 @@ XSetDeviceValuators(dpy, dev, valuators,
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Add_XSetDeviceValuators, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Add_XSetDeviceValuators, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(SetDeviceValuators, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XSetMMap.c b/src/XSetMMap.c
>index 1077433..4e4964d 100644
>--- a/src/XSetMMap.c
>+++ b/src/XSetMMap.c
>@@ -72,8 +72,11 @@ XSetDeviceModifierMapping(dpy, dev, modm
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReqExtra(SetDeviceModifierMapping, mapSize, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XSetMode.c b/src/XSetMode.c
>index 94e2b3d..29ae511 100644
>--- a/src/XSetMode.c
>+++ b/src/XSetMode.c
>@@ -71,8 +71,11 @@ XSetDeviceMode(dpy, dev, mode)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(SetDeviceMode, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XSndExEv.c b/src/XSndExEv.c
>index 71431cd..69dd779 100644
>--- a/src/XSndExEv.c
>+++ b/src/XSndExEv.c
>@@ -81,8 +81,11 @@ XSendExtensionEvent(dpy, dev, dest, prop
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     /* call through display to find proper conversion routine */
> 
>diff --git a/src/XUngrDev.c b/src/XUngrDev.c
>index 70ba03d..5e9d0b5 100644
>--- a/src/XUngrDev.c
>+++ b/src/XUngrDev.c
>@@ -70,8 +70,11 @@ XUngrabDevice(dpy, dev, time)
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>+    }
> 
>     GetReq(UngrabDevice, req);
>     req->reqType = info->codes->major_opcode;
>diff --git a/src/XUngrDvB.c b/src/XUngrDvB.c
>index 77dbe77..cb318c6 100644
>--- a/src/XUngrDvB.c
>+++ b/src/XUngrDvB.c
>@@ -73,10 +73,13 @@ XUngrabDeviceButton(dpy, dev, button, mo
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>-    GetReq(UngrabDeviceButton, req);
>+    }
> 
>+    GetReq(UngrabDeviceButton, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_UngrabDeviceButton;
>     req->grabbed_device = dev->device_id;
>diff --git a/src/XUngrDvK.c b/src/XUngrDvK.c
>index 0ae3178..259d209 100644
>--- a/src/XUngrDvK.c
>+++ b/src/XUngrDvK.c
>@@ -73,10 +73,13 @@ XUngrabDeviceKey(dpy, dev, key, modifier
>     XExtDisplayInfo *info = XInput_find_display(dpy);
> 
>     LockDisplay(dpy);
>-    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1)
>+    if (_XiCheckExtInit(dpy, XInput_Initial_Release, info) == -1) {
>+	UnlockDisplay(dpy);
>+	SyncHandle();
> 	return (NoSuchExtension);
>-    GetReq(UngrabDeviceKey, req);
>+    }
> 
>+    GetReq(UngrabDeviceKey, req);
>     req->reqType = info->codes->major_opcode;
>     req->ReqType = X_UngrabDeviceKey;
>     req->grabbed_device = dev->device_id;

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