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drm/i915: don't update the fb base if there is no fb

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Otherwise we'll set_fb complains pretty loudly if we the crtc is off
and userspace moves the NULL fb around a bit. Yeah, this actually
happens in the wild ...

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-07-10 18:11:08 +02:00
parent 431e50f799
commit 835c5873d6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/intel_display.c
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@ -6828,7 +6828,7 @@ intel_set_config_compute_mode_changes(struct drm_mode_set *set,
config->fb_changed = true;
}
if (set->x != set->crtc->x || set->y != set->crtc->y)
if (set->fb && (set->x != set->crtc->x || set->y != set->crtc->y))
config->fb_changed = true;
if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {