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xf86: make sure rotate calcs are done on the right screen boundaries 

This fixes a segfault where this code believes we are outside the screen
boundaries on a slave device, but we aren't.

Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2012-07-05 20:34:54 +01:00
parent cc02f4ef3e
commit a7c01da54a
1 changed files with 6 additions and 0 deletions
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6
hw/xfree86/modes/xf86Rotate.c
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@ -322,6 +322,12 @@ xf86CrtcFitsScreen(xf86CrtcPtr crtc, struct pict_f_transform *crtc_to_fb)
/* When called before PreInit, the driver is /* When called before PreInit, the driver is
* presumably doing load detect * presumably doing load detect
*/ */
if (pScrn->is_gpu) {
ScreenPtr pScreen = xf86ScrnToScreen(pScrn);
if (pScreen->current_master)
pScrn = xf86ScreenToScrn(pScreen->current_master);
}
if (pScrn->virtualX == 0 || pScrn->virtualY == 0) if (pScrn->virtualX == 0 || pScrn->virtualY == 0)
return TRUE; return TRUE;