drm: make sure drm_vblank_init() has been called before touching vbl_lock (bde4889a) · Commits · e / devices / android_kernel_teracube_emerald

drivers/gpu/drm/drm_irq.c

+9 −6

Original line number	Diff line number	Diff line
		@@ -407,13 +407,16 @@ int drm_irq_uninstall(struct drm_device *dev)
		/*
		* Wake up any waiters so they don't hang.
		*/
		if (dev->num_crtcs) {
		spin_lock_irqsave(&dev->vbl_lock, irqflags);
		for (i = 0; i < dev->num_crtcs; i++) {
		DRM_WAKEUP(&dev->vbl_queue[i]);
		dev->vblank_enabled[i] = 0;
		dev->last_vblank[i] = dev->driver->get_vblank_counter(dev, i);
		dev->last_vblank[i] =
		dev->driver->get_vblank_counter(dev, i);
		}
		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
		}

		if (!irq_enabled)
		return -EINVAL;