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xfree86/modes: only call gamma_set if its non NULL

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I ran accross a crash with xf86-video-nv-2.1.15 [1] and xserver
1.7.3.901. It looks like the problem is that gamma_set is called even
if that is NULL.

[1] https://launchpad.net/bugs/494627

Reviewed-By: Matthias Hopf <mhopf@suse.de>
Signed-off-by: Julien Cristau <jcristau@debian.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Michael Vogt 2010-01-25 18:41:20 +01:00 committed by Keith Packard
parent 0688dca044
commit 1e6fd65d0b
1 changed files with 1 additions and 1 deletions
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2
hw/xfree86/modes/xf86Crtc.c
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@ -354,7 +354,7 @@ xf86CrtcSetModeTransform (xf86CrtcPtr crtc, DisplayModePtr mode, Rotation rotati
}
/* Only upload when needed, to avoid unneeded delays. */
if (!crtc->active)
if (!crtc->active && crtc->funcs->gamma_set)
crtc->funcs->gamma_set(crtc, crtc->gamma_red, crtc->gamma_green,
crtc->gamma_blue, crtc->gamma_size);