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-rw-r--r--src/mesa/drivers/dri/sis/sis_screen.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/sis/sis_screen.c b/src/mesa/drivers/dri/sis/sis_screen.c
index ccfa959c9a..e6c398f4e2 100644
--- a/src/mesa/drivers/dri/sis/sis_screen.c
+++ b/src/mesa/drivers/dri/sis/sis_screen.c
@@ -316,6 +316,8 @@ static void sisCopyBuffer( __DRIdrawablePrivate *dPriv )
int i;
ENGPACKET stEngPacket;
+ memset(&stEngPacket, 0, sizeof(ENGPACKET));
+
while ((*smesa->FrameCountPtr) - MMIO_READ(0x8a2c) > SIS_MAX_FRAME_LENGTH)
;