[PATCH xserver] EXA: Check sys_ptr isn't NULL before passing it to the UploadToScreen hook.

[Michel Dänzer]

From: Michel Dänzer <daenzer at vmware.com>

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=27510 .

Signed-off-by: Michel Dänzer <daenzer at vmware.com>
---
 exa/exa_accel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/exa/exa_accel.c b/exa/exa_accel.c
index 4680c37..57029fd 100644
--- a/exa/exa_accel.c
+++ b/exa/exa_accel.c
@@ -512,7 +512,7 @@ exaHWCopyNtoN (DrawablePtr    pSrcDrawable,
 	 *
 	 * Only taking this path for directly accessible pixmaps.
 	 */
-	} else if (!pDstExaPixmap->pDamage) {
+	} else if (!pDstExaPixmap->pDamage && pSrcExaPixmap->sys_ptr) {
 	    int bpp = pSrcDrawable->bitsPerPixel;
 	    int src_stride = exaGetPixmapPitch(pSrcPixmap);
 	    CARD8 *src = NULL;
-- 
1.7.0.4