From: Eric Anholt <anholt@FreeBSD.org>
Date: Sun, 26 Jun 2005 21:02:58 +0000 (+0000)
Subject: Zero out the ENGPACKET allocated on the stack, to avoid sending uninitialized
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3b817fde8832ac577c307e64959e5049017b475f;p=mesa.git

Zero out the ENGPACKET allocated on the stack, to avoid sending uninitialized
values to reserved fields on the card, resulting in all-black output and
sometimes hangs.

Submitted by:	Thomas Winischhofer
---

diff --git a/src/mesa/drivers/dri/sis/sis_screen.c b/src/mesa/drivers/dri/sis/sis_screen.c
index ccfa959c9af..e6c398f4e28 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)
       ;