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DGA: Fix ProcXF86DGASetViewPort for missing support in driver.

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Fixes a segfault when trying to activate a DGA mode without checking
whether DGA modesetting is at all possible.
(cherry picked from commit 1feb69eb63)
This commit is contained in:
Luc Verhaegen 2008-10-08 14:55:29 +02:00 • committed by Adam Jackson
parent 4e6cbd3238
commit 8337c9aa3d
1 changed files with 5 additions and 2 deletions
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7
hw/xfree86/dixmods/extmod/xf86dga.c
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@ -93,7 +93,7 @@ ProcXF86DGADirectVideo(ClientPtr client)
REQUEST_SIZE_MATCH(xXF86DGADirectVideoReq);
if (!DGAAvailable(stuff->screen))
if (!DGAAvailable(stuff->screen))
return DGAErrorBase + XF86DGANoDirectVideoMode;
if (stuff->enable & XF86DGADirectGraphics) {
@ -128,7 +128,7 @@ ProcXF86DGAGetViewPortSize(ClientPtr client)
rep.length = 0;
rep.sequenceNumber = client->sequence;
if (!DGAAvailable(stuff->screen))
if (!DGAAvailable(stuff->screen))
return (DGAErrorBase + XF86DGANoDirectVideoMode);
if(!(num = DGAGetOldDGAMode(stuff->screen)))
@ -153,6 +153,9 @@ ProcXF86DGASetViewPort(ClientPtr client)
REQUEST_SIZE_MATCH(xXF86DGASetViewPortReq);
if (!DGAAvailable(stuff->screen))
return (DGAErrorBase + XF86DGANoDirectVideoMode);
if (!DGAActive(stuff->screen))
{
int num;