drm/nouveau: remove left-over !DRIVER_MODESET paths

It's far preferable to have the driver do nothing at all for "nomodeset".
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_dma.c

@@ -92,11 +92,9 @@ nouveau_dma_init(struct nouveau_channel *chan)
 		return ret;
 
 	/* Map M2MF notifier object - fbcon. */
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		ret = nouveau_bo_map(chan->notifier_bo);
-		if (ret)
-			return ret;
-	}
+	ret = nouveau_bo_map(chan->notifier_bo);
+	if (ret)
+		return ret;
 
 	/* Insert NOPS for NOUVEAU_DMA_SKIPS */
 	ret = RING_SPACE(chan, NOUVEAU_DMA_SKIPS);

drivers/gpu/drm/nouveau/nouveau_drv.c

@@ -155,9 +155,6 @@ nouveau_pci_suspend(struct pci_dev *pdev, pm_message_t pm_state)
 	struct drm_crtc *crtc;
 	int ret, i;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -ENODEV;
-
 	if (pm_state.event == PM_EVENT_PRETHAW)
 		return 0;
 
@@ -257,9 +254,6 @@ nouveau_pci_resume(struct pci_dev *pdev)
 	struct drm_crtc *crtc;
 	int ret, i;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -ENODEV;
-
 	nouveau_fbcon_save_disable_accel(dev);
 
 	NV_INFO(dev, "We're back, enabling device...\n");
@@ -371,7 +365,8 @@ nouveau_pci_resume(struct pci_dev *pdev)
 static struct drm_driver driver = {
 	.driver_features =
 		DRIVER_USE_AGP | DRIVER_PCI_DMA | DRIVER_SG |
-		DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
+		DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM |
+		DRIVER_MODESET,
 	.load = nouveau_load,
 	.firstopen = nouveau_firstopen,
 	.lastclose = nouveau_lastclose,
@@ -438,16 +433,18 @@ static int __init nouveau_init(void)
 			nouveau_modeset = 1;
 	}
 
-	if (nouveau_modeset == 1) {
-		driver.driver_features |= DRIVER_MODESET;
-		nouveau_register_dsm_handler();
-	}
+	if (!nouveau_modeset)
+		return 0;
 
+	nouveau_register_dsm_handler();
 	return drm_init(&driver);
 }
 
 static void __exit nouveau_exit(void)
 {
+	if (!nouveau_modeset)
+		return;
+
 	drm_exit(&driver);
 	nouveau_unregister_dsm_handler();
 }

drivers/gpu/drm/nouveau/nouveau_mem.c

@@ -277,8 +277,7 @@ nouveau_mem_close(struct drm_device *dev)
 
 	nouveau_ttm_global_release(dev_priv);
 
-	if (drm_core_has_AGP(dev) && dev->agp &&
-	    drm_core_check_feature(dev, DRIVER_MODESET)) {
+	if (drm_core_has_AGP(dev) && dev->agp) {
 		struct drm_agp_mem *entry, *tempe;
 
 		/* Remove AGP resources, but leave dev->agp

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -425,11 +425,9 @@ nouveau_card_init(struct drm_device *dev)
 	spin_lock_init(&dev_priv->context_switch_lock);
 
 	/* Parse BIOS tables / Run init tables if card not POSTed */
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		ret = nouveau_bios_init(dev);
-		if (ret)
-			goto out;
-	}
+	ret = nouveau_bios_init(dev);
+	if (ret)
+		goto out;
 
 	ret = nouveau_mem_detect(dev);
 	if (ret)
@@ -504,14 +502,12 @@ nouveau_card_init(struct drm_device *dev)
 			goto out_irq;
 	}
 
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		if (dev_priv->card_type >= NV_50)
-			ret = nv50_display_create(dev);
-		else
-			ret = nv04_display_create(dev);
-		if (ret)
-			goto out_channel;
-	}
+	if (dev_priv->card_type >= NV_50)
+		ret = nv50_display_create(dev);
+	else
+		ret = nv04_display_create(dev);
+	if (ret)
+		goto out_channel;
 
 	ret = nouveau_backlight_init(dev);
 	if (ret)
@@ -519,11 +515,8 @@ nouveau_card_init(struct drm_device *dev)
 
 	dev_priv->init_state = NOUVEAU_CARD_INIT_DONE;
 
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		nouveau_fbcon_init(dev);
-		drm_kms_helper_poll_init(dev);
-	}
-
+	nouveau_fbcon_init(dev);
+	drm_kms_helper_poll_init(dev);
 	return 0;
 
 out_channel:
@@ -595,8 +588,7 @@ static void nouveau_card_takedown(struct drm_device *dev)
 		nouveau_mem_close(dev);
 		engine->instmem.takedown(dev);
 
-		if (drm_core_check_feature(dev, DRIVER_MODESET))
-			drm_irq_uninstall(dev);
+		drm_irq_uninstall(dev);
 
 		nouveau_gpuobj_late_takedown(dev);
 		nouveau_bios_takedown(dev);
@@ -691,6 +683,7 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 	struct drm_nouveau_private *dev_priv;
 	uint32_t reg0;
 	resource_size_t mmio_start_offs;
+	int ret;
 
 	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
 	if (!dev_priv)
@@ -773,11 +766,9 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 	NV_INFO(dev, "Detected an NV%2x generation card (0x%08x)\n",
 		dev_priv->card_type, reg0);
 
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		int ret = nouveau_remove_conflicting_drivers(dev);
-		if (ret)
-			return ret;
-	}
+	ret = nouveau_remove_conflicting_drivers(dev);
+	if (ret)
+		return ret;
 
 	/* Map PRAMIN BAR, or on older cards, the aperture withing BAR0 */
 	if (dev_priv->card_type >= NV_40) {
@@ -812,46 +803,28 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 		dev_priv->flags |= NV_NFORCE2;
 
 	/* For kernel modesetting, init card now and bring up fbcon */
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		int ret = nouveau_card_init(dev);
-		if (ret)
-			return ret;
-	}
+	ret = nouveau_card_init(dev);
+	if (ret)
+		return ret;
 
 	return 0;
 }
 
-static void nouveau_close(struct drm_device *dev)
-{
-	struct drm_nouveau_private *dev_priv = dev->dev_private;
-
-	/* In the case of an error dev_priv may not be allocated yet */
-	if (dev_priv)
-		nouveau_card_takedown(dev);
-}
-
-/* KMS: we need mmio at load time, not when the first drm client opens. */
 void nouveau_lastclose(struct drm_device *dev)
 {
-	if (drm_core_check_feature(dev, DRIVER_MODESET))
-		return;
-
-	nouveau_close(dev);
 }
 
 int nouveau_unload(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
 
-	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
-		drm_kms_helper_poll_fini(dev);
-		nouveau_fbcon_fini(dev);
-		if (dev_priv->card_type >= NV_50)
-			nv50_display_destroy(dev);
-		else
-			nv04_display_destroy(dev);
-		nouveau_close(dev);
-	}
+	drm_kms_helper_poll_fini(dev);
+	nouveau_fbcon_fini(dev);
+	if (dev_priv->card_type >= NV_50)
+		nv50_display_destroy(dev);
+	else
+		nv04_display_destroy(dev);
+	nouveau_card_takedown(dev);
 
 	iounmap(dev_priv->mmio);
 	iounmap(dev_priv->ramin);