Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6v2.6.39-rc4-git2

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/radeon/kms: pll tweaks for r7xx
  drm/nouveau: fix allocation of notifier object
  drm/nouveau: fix notifier memory corruption bug
  drm/nouveau: fix pinning of notifier block
  drm/nouveau: populate ttm_alloced with false, when it's not
  drm/nouveau: fix nv30 pcie boards
  drm/nouveau: split ramin_lock into two locks, one hardirq safe
  drm/radeon/kms: adjust evergreen display watermark setup
  drm/radeon/kms: add connectors even if i2c fails
  drm/radeon/kms: fix bad shift in atom iio table parser

16 files changed, 102 insertions, 92 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_dma.c b/drivers/gpu/drm/nouveau/nouveau_dma.c
index ce38e97b9428..568caedd7216 100644
--- a/drivers/gpu/drm/nouveau/nouveau_dma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_dma.c
@@ -83,7 +83,7 @@ nouveau_dma_init(struct nouveau_channel *chan)
 		return ret;
 
 	/* NV_MEMORY_TO_MEMORY_FORMAT requires a notifier object */
-	ret = nouveau_notifier_alloc(chan, NvNotify0, 32, 0xfd0, 0x1000,
+	ret = nouveau_notifier_alloc(chan, NvNotify0, 32, 0xfe0, 0x1000,
 				     &chan->m2mf_ntfy);
 	if (ret)
 		return ret;
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 856d56a98d1e..a76514a209b3 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -682,6 +682,9 @@ struct drm_nouveau_private {
 	/* For PFIFO and PGRAPH. */
 	spinlock_t context_switch_lock;
 
+	/* VM/PRAMIN flush, legacy PRAMIN aperture */
+	spinlock_t vm_lock;
+
 	/* RAMIN configuration, RAMFC, RAMHT and RAMRO offsets */
 	struct nouveau_ramht  *ramht;
 	struct nouveau_gpuobj *ramfc;
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 889c4454682e..39aee6d4daf8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -181,13 +181,13 @@ nouveau_fbcon_sync(struct fb_info *info)
 		OUT_RING  (chan, 0);
 	}
 
-	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
+	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3, 0xffffffff);
 	FIRE_RING(chan);
 	mutex_unlock(&chan->mutex);
 
 	ret = -EBUSY;
 	for (i = 0; i < 100000; i++) {
-		if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
+		if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy/4 + 3)) {
 			ret = 0;
 			break;
 		}
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 78f467fe30be..5045f8b921d6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -398,7 +398,7 @@ nouveau_mem_vram_init(struct drm_device *dev)
 			dma_bits = 40;
 	} else
 	if (drm_pci_device_is_pcie(dev) &&
-	    dev_priv->chipset != 0x40 &&
+	    dev_priv->chipset  > 0x40 &&
 	    dev_priv->chipset != 0x45) {
 		if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(39)))
 			dma_bits = 39;
diff --git a/drivers/gpu/drm/nouveau/nouveau_notifier.c b/drivers/gpu/drm/nouveau/nouveau_notifier.c
index 7ba3fc0b30c1..5b39718ae1f8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_notifier.c
+++ b/drivers/gpu/drm/nouveau/nouveau_notifier.c
@@ -35,19 +35,22 @@ nouveau_notifier_init_channel(struct nouveau_channel *chan)
 {
 	struct drm_device *dev = chan->dev;
 	struct nouveau_bo *ntfy = NULL;
-	uint32_t flags;
+	uint32_t flags, ttmpl;
 	int ret;
 
-	if (nouveau_vram_notify)
+	if (nouveau_vram_notify) {
 		flags = NOUVEAU_GEM_DOMAIN_VRAM;
-	else
+		ttmpl = TTM_PL_FLAG_VRAM;
+	} else {
 		flags = NOUVEAU_GEM_DOMAIN_GART;
+		ttmpl = TTM_PL_FLAG_TT;
+	}
 
 	ret = nouveau_gem_new(dev, NULL, PAGE_SIZE, 0, flags, 0, 0, &ntfy);
 	if (ret)
 		return ret;
 
-	ret = nouveau_bo_pin(ntfy, flags);
+	ret = nouveau_bo_pin(ntfy, ttmpl);
 	if (ret)
 		goto out_err;
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_object.c b/drivers/gpu/drm/nouveau/nouveau_object.c
index 4f00c87ed86e..67a16e01ffa6 100644
--- a/drivers/gpu/drm/nouveau/nouveau_object.c
+++ b/drivers/gpu/drm/nouveau/nouveau_object.c
@@ -1039,19 +1039,20 @@ nv_ro32(struct nouveau_gpuobj *gpuobj, u32 offset)
 {
 	struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;
 	struct drm_device *dev = gpuobj->dev;
+	unsigned long flags;
 
 	if (gpuobj->pinst == ~0 || !dev_priv->ramin_available) {
 		u64  ptr = gpuobj->vinst + offset;
 		u32 base = ptr >> 16;
 		u32  val;
 
-		spin_lock(&dev_priv->ramin_lock);
+		spin_lock_irqsave(&dev_priv->vm_lock, flags);
 		if (dev_priv->ramin_base != base) {
 			dev_priv->ramin_base = base;
 			nv_wr32(dev, 0x001700, dev_priv->ramin_base);
 		}
 		val = nv_rd32(dev, 0x700000 + (ptr & 0xffff));
-		spin_unlock(&dev_priv->ramin_lock);
+		spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 		return val;
 	}
 
@@ -1063,18 +1064,19 @@ nv_wo32(struct nouveau_gpuobj *gpuobj, u32 offset, u32 val)
 {
 	struct drm_nouveau_private *dev_priv = gpuobj->dev->dev_private;
 	struct drm_device *dev = gpuobj->dev;
+	unsigned long flags;
 
 	if (gpuobj->pinst == ~0 || !dev_priv->ramin_available) {
 		u64  ptr = gpuobj->vinst + offset;
 		u32 base = ptr >> 16;
 
-		spin_lock(&dev_priv->ramin_lock);
+		spin_lock_irqsave(&dev_priv->vm_lock, flags);
 		if (dev_priv->ramin_base != base) {
 			dev_priv->ramin_base = base;
 			nv_wr32(dev, 0x001700, dev_priv->ramin_base);
 		}
 		nv_wr32(dev, 0x700000 + (ptr & 0xffff), val);
-		spin_unlock(&dev_priv->ramin_lock);
+		spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 		return;
 	}
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
index a33fe4019286..4bce801bc588 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c
@@ -55,6 +55,7 @@ nouveau_sgdma_populate(struct ttm_backend *be, unsigned long num_pages,
 				be->func->clear(be);
 				return -EFAULT;
 			}
+			nvbe->ttm_alloced[nvbe->nr_pages] = false;
 		}
 
 		nvbe->nr_pages++;
@@ -427,7 +428,7 @@ nouveau_sgdma_init(struct drm_device *dev)
 	u32 aper_size, align;
 	int ret;
 
-	if (dev_priv->card_type >= NV_50 || drm_pci_device_is_pcie(dev))
+	if (dev_priv->card_type >= NV_40 && drm_pci_device_is_pcie(dev))
 		aper_size = 512 * 1024 * 1024;
 	else
 		aper_size = 64 * 1024 * 1024;
@@ -457,7 +458,7 @@ nouveau_sgdma_init(struct drm_device *dev)
 		dev_priv->gart_info.func = &nv50_sgdma_backend;
 	} else
 	if (drm_pci_device_is_pcie(dev) &&
-	    dev_priv->chipset != 0x40 && dev_priv->chipset != 0x45) {
+	    dev_priv->chipset > 0x40 && dev_priv->chipset != 0x45) {
 		if (nv44_graph_class(dev)) {
 			dev_priv->gart_info.func = &nv44_sgdma_backend;
 			align = 512 * 1024;
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 6e2b1a6caa2d..a30adec5beaa 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -608,6 +608,7 @@ nouveau_card_init(struct drm_device *dev)
 	spin_lock_init(&dev_priv->channels.lock);
 	spin_lock_init(&dev_priv->tile.lock);
 	spin_lock_init(&dev_priv->context_switch_lock);
+	spin_lock_init(&dev_priv->vm_lock);
 
 	/* Make the CRTCs and I2C buses accessible */
 	ret = engine->display.early_init(dev);
diff --git a/drivers/gpu/drm/nouveau/nv50_instmem.c b/drivers/gpu/drm/nouveau/nv50_instmem.c
index a6f8aa651fc6..4f95a1e5822e 100644
--- a/drivers/gpu/drm/nouveau/nv50_instmem.c
+++ b/drivers/gpu/drm/nouveau/nv50_instmem.c
@@ -404,23 +404,25 @@ void
 nv50_instmem_flush(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	unsigned long flags;
 
-	spin_lock(&dev_priv->ramin_lock);
+	spin_lock_irqsave(&dev_priv->vm_lock, flags);
 	nv_wr32(dev, 0x00330c, 0x00000001);
 	if (!nv_wait(dev, 0x00330c, 0x00000002, 0x00000000))
 		NV_ERROR(dev, "PRAMIN flush timeout\n");
-	spin_unlock(&dev_priv->ramin_lock);
+	spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 }
 
 void
 nv84_instmem_flush(struct drm_device *dev)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	unsigned long flags;
 
-	spin_lock(&dev_priv->ramin_lock);
+	spin_lock_irqsave(&dev_priv->vm_lock, flags);
 	nv_wr32(dev, 0x070000, 0x00000001);
 	if (!nv_wait(dev, 0x070000, 0x00000002, 0x00000000))
 		NV_ERROR(dev, "PRAMIN flush timeout\n");
-	spin_unlock(&dev_priv->ramin_lock);
+	spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 }
 
diff --git a/drivers/gpu/drm/nouveau/nv50_vm.c b/drivers/gpu/drm/nouveau/nv50_vm.c
index 4fd3432b5b8d..6c2694490741 100644
--- a/drivers/gpu/drm/nouveau/nv50_vm.c
+++ b/drivers/gpu/drm/nouveau/nv50_vm.c
@@ -174,10 +174,11 @@ void
 nv50_vm_flush_engine(struct drm_device *dev, int engine)
 {
 	struct drm_nouveau_private *dev_priv = dev->dev_private;
+	unsigned long flags;
 
-	spin_lock(&dev_priv->ramin_lock);
+	spin_lock_irqsave(&dev_priv->vm_lock, flags);
 	nv_wr32(dev, 0x100c80, (engine << 16) | 1);
 	if (!nv_wait(dev, 0x100c80, 0x00000001, 0x00000000))
 		NV_ERROR(dev, "vm flush timeout: engine %d\n", engine);
-	spin_unlock(&dev_priv->ramin_lock);
+	spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 }
diff --git a/drivers/gpu/drm/nouveau/nvc0_vm.c b/drivers/gpu/drm/nouveau/nvc0_vm.c
index a0a2a0277f73..a179e6c55afb 100644
--- a/drivers/gpu/drm/nouveau/nvc0_vm.c
+++ b/drivers/gpu/drm/nouveau/nvc0_vm.c
@@ -104,11 +104,12 @@ nvc0_vm_flush(struct nouveau_vm *vm)
 	struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
 	struct drm_device *dev = vm->dev;
 	struct nouveau_vm_pgd *vpgd;
+	unsigned long flags;
 	u32 engine = (dev_priv->chan_vm == vm) ? 1 : 5;
 
 	pinstmem->flush(vm->dev);
 
-	spin_lock(&dev_priv->ramin_lock);
+	spin_lock_irqsave(&dev_priv->vm_lock, flags);
 	list_for_each_entry(vpgd, &vm->pgd_list, head) {
 		/* looks like maybe a "free flush slots" counter, the
 		 * faster you write to 0x100cbc to more it decreases
@@ -125,5 +126,5 @@ nvc0_vm_flush(struct nouveau_vm *vm)
 				 nv_rd32(dev, 0x100c80), engine);
 		}
 	}
-	spin_unlock(&dev_priv->ramin_lock);
+	spin_unlock_irqrestore(&dev_priv->vm_lock, flags);
 }
diff --git a/drivers/gpu/drm/radeon/atom.c b/drivers/gpu/drm/radeon/atom.c
index d71d375149f8..7bd745689097 100644
--- a/drivers/gpu/drm/radeon/atom.c
+++ b/drivers/gpu/drm/radeon/atom.c
@@ -135,7 +135,7 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
 		case ATOM_IIO_MOVE_INDEX:
 			temp &=
 			    ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
-			      CU8(base + 2));
+			      CU8(base + 3));
 			temp |=
 			    ((index >> CU8(base + 2)) &
 			     (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
@@ -145,7 +145,7 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
 		case ATOM_IIO_MOVE_DATA:
 			temp &=
 			    ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
-			      CU8(base + 2));
+			      CU8(base + 3));
 			temp |=
 			    ((data >> CU8(base + 2)) &
 			     (0xFFFFFFFF >> (32 - CU8(base + 1)))) << CU8(base +
@@ -155,7 +155,7 @@ static uint32_t atom_iio_execute(struct atom_context *ctx, int base,
 		case ATOM_IIO_MOVE_ATTR:
 			temp &=
 			    ~((0xFFFFFFFF >> (32 - CU8(base + 1))) <<
-			      CU8(base + 2));
+			      CU8(base + 3));
 			temp |=
 			    ((ctx->
 			      io_attr >> CU8(base + 2)) & (0xFFFFFFFF >> (32 -
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index 9d516a8c4dfa..529a3a704731 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -532,10 +532,7 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
 		else
 			pll->flags |= RADEON_PLL_PREFER_LOW_REF_DIV;
 
-		if ((rdev->family == CHIP_R600) ||
-		    (rdev->family == CHIP_RV610) ||
-		    (rdev->family == CHIP_RV630) ||
-		    (rdev->family == CHIP_RV670))
+		if (rdev->family < CHIP_RV770)
 			pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
 	} else {
 		pll->flags |= RADEON_PLL_LEGACY;
@@ -565,7 +562,6 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
 			if (radeon_encoder->devices & (ATOM_DEVICE_LCD_SUPPORT)) {
 				if (ss_enabled) {
 					if (ss->refdiv) {
-						pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
 						pll->flags |= RADEON_PLL_USE_REF_DIV;
 						pll->reference_div = ss->refdiv;
 						if (ASIC_IS_AVIVO(rdev))
diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
index 3453910ee0f3..43fd01674489 100644
--- a/drivers/gpu/drm/radeon/evergreen.c
+++ b/drivers/gpu/drm/radeon/evergreen.c
@@ -353,7 +353,7 @@ static u32 evergreen_line_buffer_adjust(struct radeon_device *rdev,
 					struct drm_display_mode *mode,
 					struct drm_display_mode *other_mode)
 {
-	u32 tmp = 0;
+	u32 tmp;
 	/*
 	 * Line Buffer Setup
 	 * There are 3 line buffers, each one shared by 2 display controllers.
@@ -363,64 +363,63 @@ static u32 evergreen_line_buffer_adjust(struct radeon_device *rdev,
 	 * first display controller
 	 *  0 - first half of lb (3840 * 2)
 	 *  1 - first 3/4 of lb (5760 * 2)
-	 *  2 - whole lb (7680 * 2)
+	 *  2 - whole lb (7680 * 2), other crtc must be disabled
 	 *  3 - first 1/4 of lb (1920 * 2)
 	 * second display controller
 	 *  4 - second half of lb (3840 * 2)
 	 *  5 - second 3/4 of lb (5760 * 2)
-	 *  6 - whole lb (7680 * 2)
+	 *  6 - whole lb (7680 * 2), other crtc must be disabled
 	 *  7 - last 1/4 of lb (1920 * 2)
 	 */
-	if (mode && other_mode) {
-		if (mode->hdisplay > other_mode->hdisplay) {
-			if (mode->hdisplay > 2560)
-				tmp = 1; /* 3/4 */
-			else
-				tmp = 0; /* 1/2 */
-		} else if (other_mode->hdisplay > mode->hdisplay) {
-			if (other_mode->hdisplay > 2560)
-				tmp = 3; /* 1/4 */
-			else
-				tmp = 0; /* 1/2 */
-		} else
+	/* this can get tricky if we have two large displays on a paired group
+	 * of crtcs.  Ideally for multiple large displays we'd assign them to
+	 * non-linked crtcs for maximum line buffer allocation.
+	 */
+	if (radeon_crtc->base.enabled && mode) {
+		if (other_mode)
 			tmp = 0; /* 1/2 */
-	} else if (mode)
-		tmp = 2; /* whole */
-	else if (other_mode)
-		tmp = 3; /* 1/4 */
+		else
+			tmp = 2; /* whole */
+	} else
+		tmp = 0;
 
 	/* second controller of the pair uses second half of the lb */
 	if (radeon_crtc->crtc_id % 2)
 		tmp += 4;
 	WREG32(DC_LB_MEMORY_SPLIT + radeon_crtc->crtc_offset, tmp);
 
-	switch (tmp) {
-	case 0:
-	case 4:
-	default:
-		if (ASIC_IS_DCE5(rdev))
-			return 4096 * 2;
-		else
-			return 3840 * 2;
-	case 1:
-	case 5:
-		if (ASIC_IS_DCE5(rdev))
-			return 6144 * 2;
-		else
-			return 5760 * 2;
-	case 2:
-	case 6:
-		if (ASIC_IS_DCE5(rdev))
-			return 8192 * 2;
-		else
-			return 7680 * 2;
-	case 3:
-	case 7:
-		if (ASIC_IS_DCE5(rdev))
-			return 2048 * 2;
-		else
-			return 1920 * 2;
+	if (radeon_crtc->base.enabled && mode) {
+		switch (tmp) {
+		case 0:
+		case 4:
+		default:
+			if (ASIC_IS_DCE5(rdev))
+				return 4096 * 2;
+			else
+				return 3840 * 2;
+		case 1:
+		case 5:
+			if (ASIC_IS_DCE5(rdev))
+				return 6144 * 2;
+			else
+				return 5760 * 2;
+		case 2:
+		case 6:
+			if (ASIC_IS_DCE5(rdev))
+				return 8192 * 2;
+			else
+				return 7680 * 2;
+		case 3:
+		case 7:
+			if (ASIC_IS_DCE5(rdev))
+				return 2048 * 2;
+			else
+				return 1920 * 2;
+		}
 	}
+
+	/* controller not enabled, so no lb used */
+	return 0;
 }
 
 static u32 evergreen_get_number_of_dram_channels(struct radeon_device *rdev)
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c b/drivers/gpu/drm/radeon/radeon_connectors.c
index 2ef6d5135064..5f45fa12bb8b 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -1199,7 +1199,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 	if (router->ddc_valid || router->cd_valid) {
 		radeon_connector->router_bus = radeon_i2c_lookup(rdev, &router->i2c_info);
 		if (!radeon_connector->router_bus)
-			goto failed;
+			DRM_ERROR("Failed to assign router i2c bus! Check dmesg for i2c errors.\n");
 	}
 	switch (connector_type) {
 	case DRM_MODE_CONNECTOR_VGA:
@@ -1208,7 +1208,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("VGA: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		radeon_connector->dac_load_detect = true;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1226,7 +1226,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("DVIA: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		radeon_connector->dac_load_detect = true;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1249,7 +1249,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("DVI: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		subpixel_order = SubPixelHorizontalRGB;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1290,7 +1290,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("HDMI: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		drm_connector_attach_property(&radeon_connector->base,
 					      rdev->mode_info.coherent_mode_property,
@@ -1329,10 +1329,10 @@ radeon_add_atom_connector(struct drm_device *dev,
 			else
 				radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
 			if (!radeon_dig_connector->dp_i2c_bus)
-				goto failed;
+				DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		subpixel_order = SubPixelHorizontalRGB;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1381,7 +1381,7 @@ radeon_add_atom_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("LVDS: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		drm_connector_attach_property(&radeon_connector->base,
 					      dev->mode_config.scaling_mode_property,
@@ -1457,7 +1457,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("VGA: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		radeon_connector->dac_load_detect = true;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1475,7 +1475,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("DVIA: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		radeon_connector->dac_load_detect = true;
 		drm_connector_attach_property(&radeon_connector->base,
@@ -1493,7 +1493,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("DVI: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		if (connector_type == DRM_MODE_CONNECTOR_DVII) {
 			radeon_connector->dac_load_detect = true;
@@ -1538,7 +1538,7 @@ radeon_add_legacy_connector(struct drm_device *dev,
 		if (i2c_bus->valid) {
 			radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
 			if (!radeon_connector->ddc_bus)
-				goto failed;
+				DRM_ERROR("LVDS: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
 		}
 		drm_connector_attach_property(&radeon_connector->base,
 					      dev->mode_config.scaling_mode_property,
@@ -1567,9 +1567,4 @@ radeon_add_legacy_connector(struct drm_device *dev,
 				radeon_legacy_backlight_init(radeon_encoder, connector);
 		}
 	}
-	return;
-
-failed:
-	drm_connector_cleanup(connector);
-	kfree(connector);
 }
diff --git a/drivers/gpu/drm/radeon/radeon_i2c.c b/drivers/gpu/drm/radeon/radeon_i2c.c
index ccbabf734a61..983cbac75af0 100644
--- a/drivers/gpu/drm/radeon/radeon_i2c.c
+++ b/drivers/gpu/drm/radeon/radeon_i2c.c
@@ -1096,6 +1096,9 @@ void radeon_router_select_ddc_port(struct radeon_connector *radeon_connector)
 	if (!radeon_connector->router.ddc_valid)
 		return;
 
+	if (!radeon_connector->router_bus)
+		return;
+
 	radeon_i2c_get_byte(radeon_connector->router_bus,
 			    radeon_connector->router.i2c_addr,
 			    0x3, &val);
@@ -1121,6 +1124,9 @@ void radeon_router_select_cd_port(struct radeon_connector *radeon_connector)
 	if (!radeon_connector->router.cd_valid)
 		return;
 
+	if (!radeon_connector->router_bus)
+		return;
+
 	radeon_i2c_get_byte(radeon_connector->router_bus,
 			    radeon_connector->router.i2c_addr,
 			    0x3, &val);