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drm/nouveau: fix null pointer dereference in poll_changed

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Fixes vgaswitcheroo on a card without display.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Maarten Lankhorst 2013-07-23 15:45:11 +02:00 • committed by Ben Skeggs
commit 8a258353ed
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/nouveau/nouveau_fbcon.c
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@ -398,7 +398,8 @@ void
nouveau_fbcon_output_poll_changed(struct drm_device *dev)
{
struct nouveau_drm *drm = nouveau_drm(dev);
drm_fb_helper_hotplug_event(&drm->fbcon->helper);
if (drm->fbcon)
drm_fb_helper_hotplug_event(&drm->fbcon->helper);
}
static int