From de88ea2755611bdcb18d91d8234d2ab5be8ff2e9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
Date: Fri, 24 Aug 2018 11:00:16 +0200
Subject: [PATCH] glamor: Handle ihandle == -1 in
 radeon_glamor_set_shared_pixmap_backing

---
 src/radeon_glamor.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/radeon_glamor.c b/src/radeon_glamor.c
index c733d192..bffc89ec 100644
--- a/src/radeon_glamor.c
+++ b/src/radeon_glamor.c
@@ -402,11 +402,13 @@ radeon_glamor_set_shared_pixmap_backing(PixmapPtr pixmap, void *handle)
 {
 	ScreenPtr screen = pixmap->drawable.pScreen;
 	ScrnInfoPtr scrn = xf86ScreenToScrn(screen);
+	int ihandle = (int)(long)handle;
 
 	if (!radeon_set_shared_pixmap_backing(pixmap, handle, NULL))
 		return FALSE;
 
-	if (!radeon_glamor_create_textured_pixmap(pixmap,
+	if (ihandle != -1 &&
+	    !radeon_glamor_create_textured_pixmap(pixmap,
 						  radeon_get_pixmap_bo(pixmap))) {
 		xf86DrvMsg(scrn->scrnIndex, X_ERROR,
 			   "Failed to get PRIME drawable for glamor pixmap.\n");