drm/nv50/disp: fix evo for create/init + destroy/fini split

Signed-off-by: Ben Skeggs <[e-mail]>

drivers/gpu/drm/nouveau/nv50_display.c

···
 	struct dcb_table *dcb = &dev_priv->vbios.dcb;
 	struct drm_connector *connector, *ct;
 	struct nv50_display *priv;
-	int i;
+	int ret, i;
 
 	NV_DEBUG_KMS(dev, "\n");
 
···
 
 	tasklet_init(&priv->tasklet, nv50_display_bh, (unsigned long)dev);
 	nouveau_irq_register(dev, 26, nv50_display_isr);
+
+	ret = nv50_evo_create(dev);
+	if (ret) {
+		nv50_display_destroy(dev);
+		return ret;
+	}
+
 	return 0;
 }
 
···
 
 	NV_DEBUG_KMS(dev, "\n");
 
+	nv50_evo_destroy(dev);
 	nouveau_irq_unregister(dev, 26);
 	kfree(disp);
 }

drivers/gpu/drm/nouveau/nv50_display.h

···
 			    struct nouveau_channel *chan);
 void nv50_display_flip_stop(struct drm_crtc *);
 
+int  nv50_evo_create(struct drm_device *dev);
+void nv50_evo_destroy(struct drm_device *dev);
 int  nv50_evo_init(struct drm_device *dev);
 void nv50_evo_fini(struct drm_device *dev);
 void nv50_evo_dmaobj_init(struct nouveau_gpuobj *, u32 memtype, u64 base,

drivers/gpu/drm/nouveau/nv50_evo.c

···
 	}
 }
 
-static void
+void
 nv50_evo_destroy(struct drm_device *dev)
 {
 	struct nv50_display *disp = nv50_display(dev);
···
 	nv50_evo_channel_del(&disp->master);
 }
 
-static int
+int
 nv50_evo_create(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
···
 	struct nv50_display *disp = nv50_display(dev);
 	int ret, i;
 
-	if (!disp->master) {
-		ret = nv50_evo_create(dev);
-		if (ret)
-			return ret;
-	}
-
 	ret = nv50_evo_channel_init(disp->master);
 	if (ret)
 		return ret;
···
 
 	if (disp->master)
 		nv50_evo_channel_fini(disp->master);
-
-	nv50_evo_destroy(dev);
 }