[PATCH 1/3] drm: Remove drm_vblank_cleanup from drm_vblank_init error path.

[Mario Kleiner <mario.kleiner.de@gmail.com>]

drm_vblank_cleanup() would operate on non-existent dev->vblank
data structure, as failure to allocate that data structure is
what triggers the error path in the first place.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: stable@vger.kernel.org
---
 drivers/gpu/drm/drm_irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 0de123a..553a58c 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -224,7 +224,7 @@ int drm_vblank_init(struct drm_device *dev, int num_crtcs)
 	return 0;
 
 err:
-	drm_vblank_cleanup(dev);
+	dev->num_crtcs = 0;
 	return ret;
 }
 EXPORT_SYMBOL(drm_vblank_init);
-- 
1.9.1