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| author |   Maarten Lankhorst <maarten.lankhorst@canonical.com> | 2013-07-23 15:45:11 +0200 |
|---|---|---|
| committer |   Ben Skeggs <bskeggs@redhat.com> | 2013-07-30 13:04:19 +1000 |
| commit | 8a258353ed46fa9886bff42e869067336eeb1db6 (patch) | |
| tree | 2457f5769f325747d6e7d244c987f0f86566d88b /drivers/gpu | |
| parent | drm/nv50/gpio: post-nv92 cards have 32 interrupt lines (diff) | |
| download | linux-dev-8a258353ed46fa9886bff42e869067336eeb1db6.tar.xz linux-dev-8a258353ed46fa9886bff42e869067336eeb1db6.zip | |
drm/nouveau: fix null pointer dereference in poll_changed
Fixes vgaswitcheroo on a card without display.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_fbcon.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index 4c1bc061fae2..8f6d63d7edd3 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -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 |