Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

23 files changed, 471 insertions, 226 deletions

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 4be3acbaaf9..3a22eb9be37 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -80,18 +80,17 @@ config DRM_I915
 	  XFree86 4.4 and above. If unsure, build this and i830 as modules and
 	  the X server will load the correct one.
 
-endchoice
-
 config DRM_I915_KMS
 	bool "Enable modesetting on intel by default"
 	depends on DRM_I915
 	help
-	Choose this option if you want kernel modesetting enabled by default,
-	and you have a new enough userspace to support this. Running old
-	userspaces with this enabled will cause pain.  Note that this causes
-	the driver to bind to PCI devices, which precludes loading things
-	like intelfb.
+	  Choose this option if you want kernel modesetting enabled by default,
+	  and you have a new enough userspace to support this. Running old
+	  userspaces with this enabled will cause pain.  Note that this causes
+	  the driver to bind to PCI devices, which precludes loading things
+	  like intelfb.
 
+endchoice
 
 config DRM_MGA
 	tristate "Matrox g200/g400"
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 72c667f9bee..12715d3c078 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -420,7 +420,7 @@ int drm_rmmap_locked(struct drm_device *dev, drm_local_map_t *map)
 				dev->sigdata.lock = NULL;
 			master->lock.hw_lock = NULL;   /* SHM removed */
 			master->lock.file_priv = NULL;
-			wake_up_interruptible(&master->lock.lock_queue);
+			wake_up_interruptible_all(&master->lock.lock_queue);
 		}
 		break;
 	case _DRM_AGP:
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index bfce0992fef..94a76887173 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -1741,9 +1741,8 @@ out:
  * RETURNS:
  * Zero on success, errno on failure.
  */
-void drm_fb_release(struct file *filp)
+void drm_fb_release(struct drm_file *priv)
 {
-	struct drm_file *priv = filp->private_data;
 	struct drm_device *dev = priv->minor->dev;
 	struct drm_framebuffer *fb, *tfb;
 
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 964c5eb1fad..1c3a8c55714 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -452,6 +452,59 @@ static void drm_setup_crtcs(struct drm_device *dev)
 	kfree(modes);
 	kfree(enabled);
 }
+
+/**
+ * drm_encoder_crtc_ok - can a given crtc drive a given encoder?
+ * @encoder: encoder to test
+ * @crtc: crtc to test
+ *
+ * Return false if @encoder can't be driven by @crtc, true otherwise.
+ */
+static bool drm_encoder_crtc_ok(struct drm_encoder *encoder,
+				struct drm_crtc *crtc)
+{
+	struct drm_device *dev;
+	struct drm_crtc *tmp;
+	int crtc_mask = 1;
+
+	WARN(!crtc, "checking null crtc?");
+
+	dev = crtc->dev;
+
+	list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) {
+		if (tmp == crtc)
+			break;
+		crtc_mask <<= 1;
+	}
+
+	if (encoder->possible_crtcs & crtc_mask)
+		return true;
+	return false;
+}
+
+/*
+ * Check the CRTC we're going to map each output to vs. its current
+ * CRTC.  If they don't match, we have to disable the output and the CRTC
+ * since the driver will have to re-route things.
+ */
+static void
+drm_crtc_prepare_encoders(struct drm_device *dev)
+{
+	struct drm_encoder_helper_funcs *encoder_funcs;
+	struct drm_encoder *encoder;
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+		encoder_funcs = encoder->helper_private;
+		/* Disable unused encoders */
+		if (encoder->crtc == NULL)
+			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+		/* Disable encoders whose CRTC is about to change */
+		if (encoder_funcs->get_crtc &&
+		    encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
+			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+	}
+}
+
 /**
  * drm_crtc_set_mode - set a mode
  * @crtc: CRTC to program
@@ -512,8 +565,8 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
 	if (drm_mode_equal(&saved_mode, &crtc->mode)) {
 		if (saved_x != crtc->x || saved_y != crtc->y ||
 		    depth_changed || bpp_changed) {
-			crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
-						  old_fb);
+			ret = !crtc_funcs->mode_set_base(crtc, crtc->x, crtc->y,
+							 old_fb);
 			goto done;
 		}
 	}
@@ -547,12 +600,16 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
 		encoder_funcs->prepare(encoder);
 	}
 
+	drm_crtc_prepare_encoders(dev);
+
 	crtc_funcs->prepare(crtc);
 
 	/* Set up the DPLL and any encoders state that needs to adjust or depend
 	 * on the DPLL.
 	 */
-	crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
+	ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
+	if (!ret)
+	    goto done;
 
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 
@@ -615,7 +672,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 	struct drm_device *dev;
 	struct drm_crtc **save_crtcs, *new_crtc;
 	struct drm_encoder **save_encoders, *new_encoder;
-	struct drm_framebuffer *old_fb;
+	struct drm_framebuffer *old_fb = NULL;
 	bool save_enabled;
 	bool mode_changed = false;
 	bool fb_changed = false;
@@ -666,9 +723,10 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 	 * and then just flip_or_move it */
 	if (set->crtc->fb != set->fb) {
 		/* If we have no fb then treat it as a full mode set */
-		if (set->crtc->fb == NULL)
+		if (set->crtc->fb == NULL) {
+			DRM_DEBUG("crtc has no fb, full mode set\n");
 			mode_changed = true;
-		else if ((set->fb->bits_per_pixel !=
+		} else if ((set->fb->bits_per_pixel !=
 			 set->crtc->fb->bits_per_pixel) ||
 			 set->fb->depth != set->crtc->fb->depth)
 			fb_changed = true;
@@ -680,7 +738,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 		fb_changed = true;
 
 	if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) {
-		DRM_DEBUG("modes are different\n");
+		DRM_DEBUG("modes are different, full mode set\n");
 		drm_mode_debug_printmodeline(&set->crtc->mode);
 		drm_mode_debug_printmodeline(set->mode);
 		mode_changed = true;
@@ -706,6 +764,7 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 		}
 
 		if (new_encoder != connector->encoder) {
+			DRM_DEBUG("encoder changed, full mode switch\n");
 			mode_changed = true;
 			connector->encoder = new_encoder;
 		}
@@ -732,10 +791,20 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 			if (set->connectors[ro] == connector)
 				new_crtc = set->crtc;
 		}
+
+		/* Make sure the new CRTC will work with the encoder */
+		if (new_crtc &&
+		    !drm_encoder_crtc_ok(connector->encoder, new_crtc)) {
+			ret = -EINVAL;
+			goto fail_set_mode;
+		}
 		if (new_crtc != connector->encoder->crtc) {
+			DRM_DEBUG("crtc changed, full mode switch\n");
 			mode_changed = true;
 			connector->encoder->crtc = new_crtc;
 		}
+		DRM_DEBUG("setting connector %d crtc to %p\n",
+			  connector->base.id, new_crtc);
 	}
 
 	/* mode_set_base is not a required function */
@@ -752,6 +821,8 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 			if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
 						      set->x, set->y,
 						      old_fb)) {
+				DRM_ERROR("failed to set mode on crtc %p\n",
+					  set->crtc);
 				ret = -EINVAL;
 				goto fail_set_mode;
 			}
@@ -765,7 +836,10 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 		old_fb = set->crtc->fb;
 		if (set->crtc->fb != set->fb)
 			set->crtc->fb = set->fb;
-		crtc_funcs->mode_set_base(set->crtc, set->x, set->y, old_fb);
+		ret = crtc_funcs->mode_set_base(set->crtc,
+						set->x, set->y, old_fb);
+		if (ret != 0)
+		    goto fail_set_mode;
 	}
 
 	kfree(save_encoders);
@@ -774,9 +848,14 @@ int drm_crtc_helper_set_config(struct drm_mode_set *set)
 
 fail_set_mode:
 	set->crtc->enabled = save_enabled;
+	set->crtc->fb = old_fb;
 	count = 0;
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
+		if (!connector->encoder)
+			continue;
+
 		connector->encoder->crtc = save_crtcs[count++];
+	}
 fail_no_encoder:
 	kfree(save_crtcs);
 	count = 0;
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 5a4d3244758..a839a28d8ee 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -125,7 +125,7 @@ static bool edid_is_valid(struct edid *edid)
 		DRM_ERROR("EDID has major version %d, instead of 1\n", edid->version);
 		goto bad;
 	}
-	if (edid->revision <= 0 || edid->revision > 3) {
+	if (edid->revision > 3) {
 		DRM_ERROR("EDID has minor version %d, which is not between 0-3\n", edid->revision);
 		goto bad;
 	}
@@ -320,10 +320,10 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev,
 	mode->htotal = mode->hdisplay + ((pt->hblank_hi << 8) | pt->hblank_lo);
 
 	mode->vdisplay = (pt->vactive_hi << 8) | pt->vactive_lo;
-	mode->vsync_start = mode->vdisplay + ((pt->vsync_offset_hi << 8) |
+	mode->vsync_start = mode->vdisplay + ((pt->vsync_offset_hi << 4) |
 					      pt->vsync_offset_lo);
 	mode->vsync_end = mode->vsync_start +
-		((pt->vsync_pulse_width_hi << 8) |
+		((pt->vsync_pulse_width_hi << 4) |
 		 pt->vsync_pulse_width_lo);
 	mode->vtotal = mode->vdisplay + ((pt->vblank_hi << 8) | pt->vblank_lo);
 
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index b06a5371585..f52663ebe01 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -457,6 +457,9 @@ int drm_release(struct inode *inode, struct file *filp)
 	if (dev->driver->driver_features & DRIVER_GEM)
 		drm_gem_release(dev, file_priv);
 
+	if (dev->driver->driver_features & DRIVER_MODESET)
+		drm_fb_release(file_priv);
+
 	mutex_lock(&dev->ctxlist_mutex);
 	if (!list_empty(&dev->ctxlist)) {
 		struct drm_ctx_list *pos, *n;
@@ -481,6 +484,7 @@ int drm_release(struct inode *inode, struct file *filp)
 	mutex_lock(&dev->struct_mutex);
 
 	if (file_priv->is_master) {
+		struct drm_master *master = file_priv->master;
 		struct drm_file *temp;
 		list_for_each_entry(temp, &dev->filelist, lhead) {
 			if ((temp->master == file_priv->master) &&
@@ -488,6 +492,19 @@ int drm_release(struct inode *inode, struct file *filp)
 				temp->authenticated = 0;
 		}
 
+		/**
+		 * Since the master is disappearing, so is the
+		 * possibility to lock.
+		 */
+
+		if (master->lock.hw_lock) {
+			if (dev->sigdata.lock == master->lock.hw_lock)
+				dev->sigdata.lock = NULL;
+			master->lock.hw_lock = NULL;
+			master->lock.file_priv = NULL;
+			wake_up_interruptible_all(&master->lock.lock_queue);
+		}
+
 		if (file_priv->minor->master == file_priv->master) {
 			/* drop the reference held my the minor */
 			drm_master_put(&file_priv->minor->master);
diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 6915fb82d0b..88d3368ffdd 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -104,8 +104,8 @@ drm_gem_init(struct drm_device *dev)
 
 	if (drm_mm_init(&mm->offset_manager, DRM_FILE_PAGE_OFFSET_START,
 			DRM_FILE_PAGE_OFFSET_SIZE)) {
-		drm_free(mm, sizeof(struct drm_gem_mm), DRM_MEM_MM);
 		drm_ht_remove(&mm->offset_hash);
+		drm_free(mm, sizeof(struct drm_gem_mm), DRM_MEM_MM);
 		return -ENOMEM;
 	}
 
@@ -295,35 +295,37 @@ drm_gem_flink_ioctl(struct drm_device *dev, void *data,
 		return -EBADF;
 
 again:
-	if (idr_pre_get(&dev->object_name_idr, GFP_KERNEL) == 0)
-		return -ENOMEM;
+	if (idr_pre_get(&dev->object_name_idr, GFP_KERNEL) == 0) {
+		ret = -ENOMEM;
+		goto err;
+	}
 
 	spin_lock(&dev->object_name_lock);
-	if (obj->name) {
-		args->name = obj->name;
+	if (!obj->name) {
+		ret = idr_get_new_above(&dev->object_name_idr, obj, 1,
+					&obj->name);
+		args->name = (uint64_t) obj->name;
 		spin_unlock(&dev->object_name_lock);
-		return 0;
-	}
-	ret = idr_get_new_above(&dev->object_name_idr, obj, 1,
-				 &obj->name);
-	spin_unlock(&dev->object_name_lock);
-	if (ret == -EAGAIN)
-		goto again;
 
-	if (ret != 0) {
-		mutex_lock(&dev->struct_mutex);
-		drm_gem_object_unreference(obj);
-		mutex_unlock(&dev->struct_mutex);
-		return ret;
-	}
+		if (ret == -EAGAIN)
+			goto again;
 
-	/*
-	 * Leave the reference from the lookup around as the
-	 * name table now holds one
-	 */
-	args->name = (uint64_t) obj->name;
+		if (ret != 0)
+			goto err;
 
-	return 0;
+		/* Allocate a reference for the name table.  */
+		drm_gem_object_reference(obj);
+	} else {
+		args->name = (uint64_t) obj->name;
+		spin_unlock(&dev->object_name_lock);
+		ret = 0;
+	}
+
+err:
+	mutex_lock(&dev->struct_mutex);
+	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
+	return ret;
 }
 
 /**
@@ -448,6 +450,7 @@ drm_gem_object_handle_free(struct kref *kref)
 	spin_lock(&dev->object_name_lock);
 	if (obj->name) {
 		idr_remove(&dev->object_name_idr, obj->name);
+		obj->name = 0;
 		spin_unlock(&dev->object_name_lock);
 		/*
 		 * The object name held a reference to this object, drop
@@ -460,6 +463,26 @@ drm_gem_object_handle_free(struct kref *kref)
 }
 EXPORT_SYMBOL(drm_gem_object_handle_free);
 
+void drm_gem_vm_open(struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj = vma->vm_private_data;
+
+	drm_gem_object_reference(obj);
+}
+EXPORT_SYMBOL(drm_gem_vm_open);
+
+void drm_gem_vm_close(struct vm_area_struct *vma)
+{
+	struct drm_gem_object *obj = vma->vm_private_data;
+	struct drm_device *dev = obj->dev;
+
+	mutex_lock(&dev->struct_mutex);
+	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
+}
+EXPORT_SYMBOL(drm_gem_vm_close);
+
+
 /**
  * drm_gem_mmap - memory map routine for GEM objects
  * @filp: DRM file pointer
@@ -521,6 +544,14 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
 #endif
 	vma->vm_page_prot = __pgprot(prot);
 
+	/* Take a ref for this mapping of the object, so that the fault
+	 * handler can dereference the mmap offset's pointer to the object.
+	 * This reference is cleaned up by the corresponding vm_close
+	 * (which should happen whether the vma was created by this call, or
+	 * by a vm_open due to mremap or partial unmap or whatever).
+	 */
+	drm_gem_object_reference(obj);
+
 	vma->vm_file = filp;	/* Needed for drm_vm_open() */
 	drm_vm_open_locked(vma);
 
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 3795dbc0f50..93e677a481f 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -435,6 +435,8 @@ EXPORT_SYMBOL(drm_vblank_get);
  */
 void drm_vblank_put(struct drm_device *dev, int crtc)
 {
+	BUG_ON (atomic_read (&dev->vblank_refcount[crtc]) == 0);
+
 	/* Last user schedules interrupt disable */
 	if (atomic_dec_and_test(&dev->vblank_refcount[crtc]))
 		mod_timer(&dev->vblank_disable_timer, jiffies + 5*DRM_HZ);
@@ -460,8 +462,9 @@ void drm_vblank_pre_modeset(struct drm_device *dev, int crtc)
 	 * so that interrupts remain enabled in the interim.
 	 */
 	if (!dev->vblank_inmodeset[crtc]) {
-		dev->vblank_inmodeset[crtc] = 1;
-		drm_vblank_get(dev, crtc);
+		dev->vblank_inmodeset[crtc] = 0x1;
+		if (drm_vblank_get(dev, crtc) == 0)
+			dev->vblank_inmodeset[crtc] |= 0x2;
 	}
 }
 EXPORT_SYMBOL(drm_vblank_pre_modeset);
@@ -473,9 +476,12 @@ void drm_vblank_post_modeset(struct drm_device *dev, int crtc)
 	if (dev->vblank_inmodeset[crtc]) {
 		spin_lock_irqsave(&dev->vbl_lock, irqflags);
 		dev->vblank_disable_allowed = 1;
-		dev->vblank_inmodeset[crtc] = 0;
 		spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
-		drm_vblank_put(dev, crtc);
+
+		if (dev->vblank_inmodeset[crtc] & 0x2)
+			drm_vblank_put(dev, crtc);
+
+		dev->vblank_inmodeset[crtc] = 0;
 	}
 }
 EXPORT_SYMBOL(drm_vblank_post_modeset);
diff --git a/drivers/gpu/drm/drm_lock.c b/drivers/gpu/drm/drm_lock.c
index 46e7b28f070..e2f70a516c3 100644
--- a/drivers/gpu/drm/drm_lock.c
+++ b/drivers/gpu/drm/drm_lock.c
@@ -80,6 +80,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 		__set_current_state(TASK_INTERRUPTIBLE);
 		if (!master->lock.hw_lock) {
 			/* Device has been unregistered */
+			send_sig(SIGTERM, current, 0);
 			ret = -EINTR;
 			break;
 		}
@@ -93,7 +94,7 @@ int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
 		/* Contention */
 		schedule();
 		if (signal_pending(current)) {
-			ret = -ERESTARTSYS;
+			ret = -EINTR;
 			break;
 		}
 	}
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 46bb923b097..7c8b15b22bf 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -146,14 +146,6 @@ static void drm_master_destroy(struct kref *kref)
 
 	drm_ht_remove(&master->magiclist);
 
-	if (master->lock.hw_lock) {
-		if (dev->sigdata.lock == master->lock.hw_lock)
-			dev->sigdata.lock = NULL;
-		master->lock.hw_lock = NULL;
-		master->lock.file_priv = NULL;
-		wake_up_interruptible(&master->lock.lock_queue);
-	}
-
 	drm_free(master, sizeof(*master), DRM_MEM_DRIVER);
 }
 
@@ -176,7 +168,7 @@ int drm_setmaster_ioctl(struct drm_device *dev, void *data,
 	    file_priv->minor->master != file_priv->master) {
 		mutex_lock(&dev->struct_mutex);
 		file_priv->minor->master = drm_master_get(file_priv->master);
-		mutex_lock(&dev->struct_mutex);
+		mutex_unlock(&dev->struct_mutex);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 81f1cff56fd..6dab63bdc4c 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -202,7 +202,7 @@ static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
 		dev_priv->ring.map.flags = 0;
 		dev_priv->ring.map.mtrr = 0;
 
-		drm_core_ioremap(&dev_priv->ring.map, dev);
+		drm_core_ioremap_wc(&dev_priv->ring.map, dev);
 
 		if (dev_priv->ring.map.handle == NULL) {
 			i915_dma_cleanup(dev);
@@ -811,7 +811,7 @@ static int i915_set_status_page(struct drm_device *dev, void *data,
 	dev_priv->hws_map.flags = 0;
 	dev_priv->hws_map.mtrr = 0;
 
-	drm_core_ioremap(&dev_priv->hws_map, dev);
+	drm_core_ioremap_wc(&dev_priv->hws_map, dev);
 	if (dev_priv->hws_map.handle == NULL) {
 		i915_dma_cleanup(dev);
 		dev_priv->status_gfx_addr = 0;
@@ -1090,6 +1090,11 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
         dev_priv->mm.gtt_mapping =
 		io_mapping_create_wc(dev->agp->base,
 				     dev->agp->agp_info.aper_size * 1024*1024);
+	if (dev_priv->mm.gtt_mapping == NULL) {
+		ret = -EIO;
+		goto out_rmmap;
+	}
+
 	/* Set up a WC MTRR for non-PAT systems.  This is more common than
 	 * one would think, because the kernel disables PAT on first
 	 * generation Core chips because WC PAT gets overridden by a UC
@@ -1122,7 +1127,7 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 	if (!I915_NEED_GFX_HWS(dev)) {
 		ret = i915_init_phys_hws(dev);
 		if (ret != 0)
-			goto out_rmmap;
+			goto out_iomapfree;
 	}
 
 	/* On the 945G/GM, the chipset reports the MSI capability on the
@@ -1161,6 +1166,8 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
 
 	return 0;
 
+out_iomapfree:
+	io_mapping_free(dev_priv->mm.gtt_mapping);
 out_rmmap:
 	iounmap(dev_priv->regs);
 free_priv:
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index aac12ee31a4..b293ef0bae7 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -27,6 +27,7 @@
  *
  */
 
+#include <linux/device.h>
 #include "drmP.h"
 #include "drm.h"
 #include "i915_drm.h"
@@ -66,6 +67,14 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
 
 	i915_save_state(dev);
 
+	/* If KMS is active, we do the leavevt stuff here */
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		if (i915_gem_idle(dev))
+			dev_err(&dev->pdev->dev,
+				"GEM idle failed, resume may fail\n");
+		drm_irq_uninstall(dev);
+	}
+
 	intel_opregion_free(dev);
 
 	if (state.event == PM_EVENT_SUSPEND) {
@@ -79,6 +88,9 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
 
 static int i915_resume(struct drm_device *dev)
 {
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	int ret = 0;
+
 	pci_set_power_state(dev->pdev, PCI_D0);
 	pci_restore_state(dev->pdev);
 	if (pci_enable_device(dev->pdev))
@@ -89,11 +101,26 @@ static int i915_resume(struct drm_device *dev)
 
 	intel_opregion_init(dev);
 
-	return 0;
+	/* KMS EnterVT equivalent */
+	if (drm_core_check_feature(dev, DRIVER_MODESET)) {
+		mutex_lock(&dev->struct_mutex);
+		dev_priv->mm.suspended = 0;
+
+		ret = i915_gem_init_ringbuffer(dev);
+		if (ret != 0)
+			ret = -1;
+		mutex_unlock(&dev->struct_mutex);
+
+		drm_irq_install(dev);
+	}
+
+	return ret;
 }
 
 static struct vm_operations_struct i915_gem_vm_ops = {
 	.fault = i915_gem_fault,
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
 };
 
 static struct drm_driver driver = {
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 7325363164f..17fa40858d2 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -184,6 +184,8 @@ typedef struct drm_i915_private {
 	unsigned int lvds_dither:1;
 	unsigned int lvds_vbt:1;
 	unsigned int int_crt_support:1;
+	unsigned int lvds_use_ssc:1;
+	int lvds_ssc_freq;
 
 	struct drm_i915_fence_reg fence_regs[16]; /* assume 965 */
 	int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
@@ -616,6 +618,7 @@ int i915_gem_init_ringbuffer(struct drm_device *dev);
 void i915_gem_cleanup_ringbuffer(struct drm_device *dev);
 int i915_gem_do_init(struct drm_device *dev, unsigned long start,
 		     unsigned long end);
+int i915_gem_idle(struct drm_device *dev);
 int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 int i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj,
 				      int write);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 81857665409..85685bfd12d 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -34,10 +34,6 @@
 
 #define I915_GEM_GPU_DOMAINS	(~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT))
 
-static void
-i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
-				  uint32_t read_domains,
-				  uint32_t write_domain);
 static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj);
 static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj);
 static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj);
@@ -607,8 +603,6 @@ int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	case -EAGAIN:
 		return VM_FAULT_OOM;
 	case -EFAULT:
-	case -EBUSY:
-		DRM_ERROR("can't insert pfn??  fault or busy...\n");
 		return VM_FAULT_SIGBUS;
 	default:
 		return VM_FAULT_NOPAGE;
@@ -684,6 +678,30 @@ out_free_list:
 	return ret;
 }
 
+static void
+i915_gem_free_mmap_offset(struct drm_gem_object *obj)
+{
+	struct drm_device *dev = obj->dev;
+	struct drm_i915_gem_object *obj_priv = obj->driver_private;
+	struct drm_gem_mm *mm = dev->mm_private;
+	struct drm_map_list *list;
+
+	list = &obj->map_list;
+	drm_ht_remove_item(&mm->offset_hash, &list->hash);
+
+	if (list->file_offset_node) {
+		drm_mm_put_block(list->file_offset_node);
+		list->file_offset_node = NULL;
+	}
+
+	if (list->map) {
+		drm_free(list->map, sizeof(struct drm_map), DRM_MEM_DRIVER);
+		list->map = NULL;
+	}
+
+	obj_priv->mmap_offset = 0;
+}
+
 /**
  * i915_gem_get_gtt_alignment - return required GTT alignment for an object
  * @obj: object to check
@@ -758,8 +776,11 @@ i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data,
 
 	if (!obj_priv->mmap_offset) {
 		ret = i915_gem_create_mmap_offset(obj);
-		if (ret)
+		if (ret) {
+			drm_gem_object_unreference(obj);
+			mutex_unlock(&dev->struct_mutex);
 			return ret;
+		}
 	}
 
 	args->offset = obj_priv->mmap_offset;
@@ -1030,6 +1051,9 @@ i915_gem_retire_requests(struct drm_device *dev)
 	drm_i915_private_t *dev_priv = dev->dev_private;
 	uint32_t seqno;
 
+	if (!dev_priv->hw_status_page)
+		return;
+
 	seqno = i915_get_gem_seqno(dev);
 
 	while (!list_empty(&dev_priv->mm.request_list)) {
@@ -1996,30 +2020,28 @@ i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write)
  *		drm_agp_chipset_flush
  */
 static void
-i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
-				  uint32_t read_domains,
-				  uint32_t write_domain)
+i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj)
 {
 	struct drm_device		*dev = obj->dev;
 	struct drm_i915_gem_object	*obj_priv = obj->driver_private;
 	uint32_t			invalidate_domains = 0;
 	uint32_t			flush_domains = 0;
 
-	BUG_ON(read_domains & I915_GEM_DOMAIN_CPU);
-	BUG_ON(write_domain == I915_GEM_DOMAIN_CPU);
+	BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU);
+	BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU);
 
 #if WATCH_BUF
 	DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n",
 		 __func__, obj,
-		 obj->read_domains, read_domains,
-		 obj->write_domain, write_domain);
+		 obj->read_domains, obj->pending_read_domains,
+		 obj->write_domain, obj->pending_write_domain);
 #endif
 	/*
 	 * If the object isn't moving to a new write domain,
 	 * let the object stay in multiple read domains
 	 */
-	if (write_domain == 0)
-		read_domains |= obj->read_domains;
+	if (obj->pending_write_domain == 0)
+		obj->pending_read_domains |= obj->read_domains;
 	else
 		obj_priv->dirty = 1;
 
@@ -2029,15 +2051,17 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
 	 * any read domains which differ from the old
 	 * write domain
 	 */
-	if (obj->write_domain && obj->write_domain != read_domains) {
+	if (obj->write_domain &&
+	    obj->write_domain != obj->pending_read_domains) {
 		flush_domains |= obj->write_domain;
-		invalidate_domains |= read_domains & ~obj->write_domain;
+		invalidate_domains |=
+			obj->pending_read_domains & ~obj->write_domain;
 	}
 	/*
 	 * Invalidate any read caches which may have
 	 * stale data. That is, any new read domains.
 	 */
-	invalidate_domains |= read_domains & ~obj->read_domains;
+	invalidate_domains |= obj->pending_read_domains & ~obj->read_domains;
 	if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) {
 #if WATCH_BUF
 		DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n",
@@ -2046,9 +2070,15 @@ i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj,
 		i915_gem_clflush_object(obj);
 	}
 
-	if ((write_domain | flush_domains) != 0)
-		obj->write_domain = write_domain;
-	obj->read_domains = read_domains;
+	/* The actual obj->write_domain will be updated with
+	 * pending_write_domain after we emit the accumulated flush for all
+	 * of our domain changes in execbuffers (which clears objects'
+	 * write_domains).  So if we have a current write domain that we
+	 * aren't changing, set pending_write_domain to that.
+	 */
+	if (flush_domains == 0 && obj->pending_write_domain == 0)
+		obj->pending_write_domain = obj->write_domain;
+	obj->read_domains = obj->pending_read_domains;
 
 	dev->invalidate_domains |= invalidate_domains;
 	dev->flush_domains |= flush_domains;
@@ -2251,6 +2281,8 @@ i915_gem_object_pin_and_relocate(struct drm_gem_object *obj,
 				  (int) reloc.offset,
 				  reloc.read_domains,
 				  reloc.write_domain);
+			drm_gem_object_unreference(target_obj);
+			i915_gem_object_unpin(obj);
 			return -EINVAL;
 		}
 
@@ -2480,13 +2512,15 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 	if (dev_priv->mm.wedged) {
 		DRM_ERROR("Execbuf while wedged\n");
 		mutex_unlock(&dev->struct_mutex);
-		return -EIO;
+		ret = -EIO;
+		goto pre_mutex_err;
 	}
 
 	if (dev_priv->mm.suspended) {
 		DRM_ERROR("Execbuf while VT-switched.\n");
 		mutex_unlock(&dev->struct_mutex);
-		return -EBUSY;
+		ret = -EBUSY;
+		goto pre_mutex_err;
 	}
 
 	/* Look up object handles */
@@ -2554,9 +2588,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 		struct drm_gem_object *obj = object_list[i];
 
 		/* Compute new gpu domains and update invalidate/flush */
-		i915_gem_object_set_to_gpu_domain(obj,
-						  obj->pending_read_domains,
-						  obj->pending_write_domain);
+		i915_gem_object_set_to_gpu_domain(obj);
 	}
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
@@ -2575,6 +2607,12 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 			(void)i915_add_request(dev, dev->flush_domains);
 	}
 
+	for (i = 0; i < args->buffer_count; i++) {
+		struct drm_gem_object *obj = object_list[i];
+
+		obj->write_domain = obj->pending_write_domain;
+	}
+
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
 #if WATCH_COHERENCY
@@ -2632,15 +2670,6 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
 
 	i915_verify_inactive(dev, __FILE__, __LINE__);
 
-	/* Copy the new buffer offsets back to the user's exec list. */
-	ret = copy_to_user((struct drm_i915_relocation_entry __user *)
-			   (uintptr_t) args->buffers_ptr,
-			   exec_list,
-			   sizeof(*exec_list) * args->buffer_count);
-	if (ret)
-		DRM_ERROR("failed to copy %d exec entries "
-			  "back to user (%d)\n",
-			   args->buffer_count, ret);
 err:
 	for (i = 0; i < pinned; i++)
 		i915_gem_object_unpin(object_list[i]);
@@ -2650,6 +2679,18 @@ err:
 
 	mutex_unlock(&dev->struct_mutex);
 
+	if (!ret) {
+		/* Copy the new buffer offsets back to the user's exec list. */
+		ret = copy_to_user((struct drm_i915_relocation_entry __user *)
+				   (uintptr_t) args->buffers_ptr,
+				   exec_list,
+				   sizeof(*exec_list) * args->buffer_count);
+		if (ret)
+			DRM_ERROR("failed to copy %d exec entries "
+				  "back to user (%d)\n",
+				  args->buffer_count, ret);
+	}
+
 pre_mutex_err:
 	drm_free(object_list, sizeof(*object_list) * args->buffer_count,
 		 DRM_MEM_DRIVER);
@@ -2753,6 +2794,7 @@ i915_gem_pin_ioctl(struct drm_device *dev, void *data,
 	if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) {
 		DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n",
 			  args->handle);
+		drm_gem_object_unreference(obj);
 		mutex_unlock(&dev->struct_mutex);
 		return -EINVAL;
 	}
@@ -2833,6 +2875,13 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
 		return -EBADF;
 	}
 
+	/* Update the active list for the hardware's current position.
+	 * Otherwise this only updates on a delayed timer or when irqs are
+	 * actually unmasked, and our working set ends up being larger than
+	 * required.
+	 */
+	i915_gem_retire_requests(dev);
+
 	obj_priv = obj->driver_private;
 	/* Don't count being on the flushing list against the object being
 	 * done.  Otherwise, a buffer left on the flushing list but not getting
@@ -2885,9 +2934,6 @@ int i915_gem_init_object(struct drm_gem_object *obj)
 void i915_gem_free_object(struct drm_gem_object *obj)
 {
 	struct drm_device *dev = obj->dev;
-	struct drm_gem_mm *mm = dev->mm_private;
-	struct drm_map_list *list;
-	struct drm_map *map;
 	struct drm_i915_gem_object *obj_priv = obj->driver_private;
 
 	while (obj_priv->pin_count > 0)
@@ -2898,19 +2944,7 @@ void i915_gem_free_object(struct drm_gem_object *obj)
 
 	i915_gem_object_unbind(obj);
 
-	list = &obj->map_list;
-	drm_ht_remove_item(&mm->offset_hash, &list->hash);
-
-	if (list->file_offset_node) {
-		drm_mm_put_block(list->file_offset_node);
-		list->file_offset_node = NULL;
-	}
-
-	map = list->map;
-	if (map) {
-		drm_free(map, sizeof(*map), DRM_MEM_DRIVER);
-		list->map = NULL;
-	}
+	i915_gem_free_mmap_offset(obj);
 
 	drm_free(obj_priv->page_cpu_valid, 1, DRM_MEM_DRIVER);
 	drm_free(obj->driver_private, 1, DRM_MEM_DRIVER);
@@ -2949,7 +2983,7 @@ i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head)
 	return 0;
 }
 
-static int
+int
 i915_gem_idle(struct drm_device *dev)
 {
 	drm_i915_private_t *dev_priv = dev->dev_private;
@@ -3095,6 +3129,7 @@ i915_gem_init_hws(struct drm_device *dev)
 	if (dev_priv->hw_status_page == NULL) {
 		DRM_ERROR("Failed to map status page.\n");
 		memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
+		i915_gem_object_unpin(obj);
 		drm_gem_object_unreference(obj);
 		return -EINVAL;
 	}
@@ -3107,6 +3142,31 @@ i915_gem_init_hws(struct drm_device *dev)
 	return 0;
 }
 
+static void
+i915_gem_cleanup_hws(struct drm_device *dev)
+{
+	drm_i915_private_t *dev_priv = dev->dev_private;
+	struct drm_gem_object *obj;
+	struct drm_i915_gem_object *obj_priv;
+
+	if (dev_priv->hws_obj == NULL)
+		return;
+
+	obj = dev_priv->hws_obj;
+	obj_priv = obj->driver_private;
+
+	kunmap(obj_priv->page_list[0]);
+	i915_gem_object_unpin(obj);
+	drm_gem_object_unreference(obj);
+	dev_priv->hws_obj = NULL;
+
+	memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
+	dev_priv->hw_status_page = NULL;
+
+	/* Write high address into HWS_PGA when disabling. */
+	I915_WRITE(HWS_PGA, 0x1ffff000);
+}
+
 int
 i915_gem_init_ringbuffer(struct drm_device *dev)
 {
@@ -3124,6 +3184,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
 	obj = drm_gem_object_alloc(dev, 128 * 1024);
 	if (obj == NULL) {
 		DRM_ERROR("Failed to allocate ringbuffer\n");
+		i915_gem_cleanup_hws(dev);
 		return -ENOMEM;
 	}
 	obj_priv = obj->driver_private;
@@ -3131,6 +3192,7 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
 	ret = i915_gem_object_pin(obj, 4096);
 	if (ret != 0) {
 		drm_gem_object_unreference(obj);
+		i915_gem_cleanup_hws(dev);
 		return ret;
 	}
 
@@ -3148,7 +3210,9 @@ i915_gem_init_ringbuffer(struct drm_device *dev)
 	if (ring->map.handle == NULL) {
 		DRM_ERROR("Failed to map ringbuffer.\n");
 		memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
+		i915_gem_object_unpin(obj);
 		drm_gem_object_unreference(obj);
+		i915_gem_cleanup_hws(dev);
 		return -EINVAL;
 	}
 	ring->ring_obj = obj;
@@ -3228,20 +3292,7 @@ i915_gem_cleanup_ringbuffer(struct drm_device *dev)
 	dev_priv->ring.ring_obj = NULL;
 	memset(&dev_priv->ring, 0, sizeof(dev_priv->ring));
 
-	if (dev_priv->hws_obj != NULL) {
-		struct drm_gem_object *obj = dev_priv->hws_obj;
-		struct drm_i915_gem_object *obj_priv = obj->driver_private;
-
-		kunmap(obj_priv->page_list[0]);
-		i915_gem_object_unpin(obj);
-		drm_gem_object_unreference(obj);
-		dev_priv->hws_obj = NULL;
-		memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map));
-		dev_priv->hw_status_page = NULL;
-
-		/* Write high address into HWS_PGA when disabling. */
-		I915_WRITE(HWS_PGA, 0x1ffff000);
-	}
+	i915_gem_cleanup_hws(dev);
 }
 
 int
@@ -3497,7 +3548,7 @@ i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj,
 	user_data = (char __user *) (uintptr_t) args->data_ptr;
 	obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset;
 
-	DRM_ERROR("obj_addr %p, %lld\n", obj_addr, args->size);
+	DRM_DEBUG("obj_addr %p, %lld\n", obj_addr, args->size);
 	ret = copy_from_user(obj_addr, user_data, args->size);
 	if (ret)
 		return -EFAULT;
diff --git a/drivers/gpu/drm/i915/i915_gem_tiling.c b/drivers/gpu/drm/i915/i915_gem_tiling.c
index fa1685cba84..7fb4191ef93 100644
--- a/drivers/gpu/drm/i915/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/i915_gem_tiling.c
@@ -299,9 +299,8 @@ i915_gem_set_tiling(struct drm_device *dev, void *data,
 	}
 	obj_priv->stride = args->stride;
 
-	mutex_unlock(&dev->struct_mutex);
-
 	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }
@@ -340,9 +339,8 @@ i915_gem_get_tiling(struct drm_device *dev, void *data,
 		DRM_ERROR("unknown tiling mode\n");
 	}
 
-	mutex_unlock(&dev->struct_mutex);
-
 	drm_gem_object_unreference(obj);
+	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index 548ff2c6643..87b6b603469 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -383,12 +383,13 @@ int i915_irq_emit(struct drm_device *dev, void *data,
 	drm_i915_irq_emit_t *emit = data;
 	int result;
 
-	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
-
 	if (!dev_priv) {
 		DRM_ERROR("called with no initialization\n");
 		return -EINVAL;
 	}
+
+	RING_LOCK_TEST_WITH_RETURN(dev, file_priv);
+
 	mutex_lock(&dev->struct_mutex);
 	result = i915_emit_irq(dev);
 	mutex_unlock(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 4ca82a02552..fc28e2bbd54 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -111,6 +111,12 @@ parse_panel_data(struct drm_i915_private *dev_priv, struct bdb_header *bdb)
 	panel_fixed_mode->clock = dvo_timing->clock * 10;
 	panel_fixed_mode->type = DRM_MODE_TYPE_PREFERRED;
 
+	/* Some VBTs have bogus h/vtotal values */
+	if (panel_fixed_mode->hsync_end > panel_fixed_mode->htotal)
+		panel_fixed_mode->htotal = panel_fixed_mode->hsync_end + 1;
+	if (panel_fixed_mode->vsync_end > panel_fixed_mode->vtotal)
+		panel_fixed_mode->vtotal = panel_fixed_mode->vsync_end + 1;
+
 	drm_mode_set_name(panel_fixed_mode);
 
 	dev_priv->vbt_mode = panel_fixed_mode;
@@ -135,6 +141,14 @@ parse_general_features(struct drm_i915_private *dev_priv,
 	if (general) {
 		dev_priv->int_tv_support = general->int_tv_support;
 		dev_priv->int_crt_support = general->int_crt_support;
+		dev_priv->lvds_use_ssc = general->enable_ssc;
+
+		if (dev_priv->lvds_use_ssc) {
+		  if (IS_I855(dev_priv->dev))
+		    dev_priv->lvds_ssc_freq = general->ssc_freq ? 66 : 48;
+		  else
+		    dev_priv->lvds_ssc_freq = general->ssc_freq ? 100 : 96;
+		}
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bbdd72909a1..a2834276cb3 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -90,12 +90,12 @@ typedef struct {
 #define I9XX_DOT_MAX		 400000
 #define I9XX_VCO_MIN		1400000
 #define I9XX_VCO_MAX		2800000
-#define I9XX_N_MIN		      3
-#define I9XX_N_MAX		      8
+#define I9XX_N_MIN		      1
+#define I9XX_N_MAX		      6
 #define I9XX_M_MIN		     70
 #define I9XX_M_MAX		    120
 #define I9XX_M1_MIN		     10
-#define I9XX_M1_MAX		     20
+#define I9XX_M1_MAX		     22
 #define I9XX_M2_MIN		      5
 #define I9XX_M2_MAX		      9
 #define I9XX_P_SDVO_DAC_MIN	      5
@@ -189,9 +189,7 @@ static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
 	return limit;
 }
 
-/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
-
-static void i8xx_clock(int refclk, intel_clock_t *clock)
+static void intel_clock(int refclk, intel_clock_t *clock)
 {
 	clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
 	clock->p = clock->p1 * clock->p2;
@@ -199,25 +197,6 @@ static void i8xx_clock(int refclk, intel_clock_t *clock)
 	clock->dot = clock->vco / clock->p;
 }
 
-/** Derive the pixel clock for the given refclk and divisors for 9xx chips. */
-
-static void i9xx_clock(int refclk, intel_clock_t *clock)
-{
-	clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
-	clock->p = clock->p1 * clock->p2;
-	clock->vco = refclk * clock->m / (clock->n + 2);
-	clock->dot = clock->vco / clock->p;
-}
-
-static void intel_clock(struct drm_device *dev, int refclk,
-			intel_clock_t *clock)
-{
-	if (IS_I9XX(dev))
-		i9xx_clock (refclk, clock);
-	else
-		i8xx_clock (refclk, clock);
-}
-
 /**
  * Returns whether any output on the specified pipe is of the specified type
  */
@@ -238,7 +217,7 @@ bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
     return false;
 }
 
-#define INTELPllInvalid(s)   { /* ErrorF (s) */; return false; }
+#define INTELPllInvalid(s)   do { /* DRM_DEBUG(s); */ return false; } while (0)
 /**
  * Returns whether the given set of divisors are valid for a given refclk with
  * the given connectors.
@@ -318,7 +297,7 @@ static bool intel_find_best_PLL(struct drm_crtc *crtc, int target,
 				     clock.p1 <= limit->p1.max; clock.p1++) {
 					int this_err;
 
-					intel_clock(dev, refclk, &clock);
+					intel_clock(refclk, &clock);
 
 					if (!intel_PLL_is_valid(crtc, &clock))
 						continue;
@@ -343,7 +322,7 @@ intel_wait_for_vblank(struct drm_device *dev)
 	udelay(20000);
 }
 
-static void
+static int
 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		    struct drm_framebuffer *old_fb)
 {
@@ -361,11 +340,21 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 	int dspstride = (pipe == 0) ? DSPASTRIDE : DSPBSTRIDE;
 	int dspcntr_reg = (pipe == 0) ? DSPACNTR : DSPBCNTR;
 	u32 dspcntr, alignment;
+	int ret;
 
 	/* no fb bound */
 	if (!crtc->fb) {
 		DRM_DEBUG("No FB bound\n");
-		return;
+		return 0;
+	}
+
+	switch (pipe) {
+	case 0:
+	case 1:
+		break;
+	default:
+		DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
+		return -EINVAL;
 	}
 
 	intel_fb = to_intel_framebuffer(crtc->fb);
@@ -377,28 +366,30 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		alignment = 64 * 1024;
 		break;
 	case I915_TILING_X:
-		if (IS_I9XX(dev))
-			alignment = 1024 * 1024;
-		else
-			alignment = 512 * 1024;
+		/* pin() will align the object as required by fence */
+		alignment = 0;
 		break;
 	case I915_TILING_Y:
 		/* FIXME: Is this true? */
 		DRM_ERROR("Y tiled not allowed for scan out buffers\n");
-		return;
+		return -EINVAL;
 	default:
 		BUG();
 	}
 
-	if (i915_gem_object_pin(intel_fb->obj, alignment))
-		return;
-
-	i915_gem_object_set_to_gtt_domain(intel_fb->obj, 1);
-
-	Start = obj_priv->gtt_offset;
-	Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
+	mutex_lock(&dev->struct_mutex);
+	ret = i915_gem_object_pin(intel_fb->obj, alignment);
+	if (ret != 0) {
+		mutex_unlock(&dev->struct_mutex);
+		return ret;
+	}
 
-	I915_WRITE(dspstride, crtc->fb->pitch);
+	ret = i915_gem_object_set_to_gtt_domain(intel_fb->obj, 1);
+	if (ret != 0) {
+		i915_gem_object_unpin(intel_fb->obj);
+		mutex_unlock(&dev->struct_mutex);
+		return ret;
+	}
 
 	dspcntr = I915_READ(dspcntr_reg);
 	/* Mask out pixel format bits in case we change it */
@@ -419,11 +410,17 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		break;
 	default:
 		DRM_ERROR("Unknown color depth\n");
-		return;
+		i915_gem_object_unpin(intel_fb->obj);
+		mutex_unlock(&dev->struct_mutex);
+		return -EINVAL;
 	}
 	I915_WRITE(dspcntr_reg, dspcntr);
 
+	Start = obj_priv->gtt_offset;
+	Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
+
 	DRM_DEBUG("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
+	I915_WRITE(dspstride, crtc->fb->pitch);
 	if (IS_I965G(dev)) {
 		I915_WRITE(dspbase, Offset);
 		I915_READ(dspbase);
@@ -440,27 +437,24 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
 		intel_fb = to_intel_framebuffer(old_fb);
 		i915_gem_object_unpin(intel_fb->obj);
 	}
+	mutex_unlock(&dev->struct_mutex);
 
 	if (!dev->primary->master)
-		return;
+		return 0;
 
 	master_priv = dev->primary->master->driver_priv;
 	if (!master_priv->sarea_priv)
-		return;
+		return 0;
 
-	switch (pipe) {
-	case 0:
-		master_priv->sarea_priv->pipeA_x = x;
-		master_priv->sarea_priv->pipeA_y = y;
-		break;
-	case 1:
+	if (pipe) {
 		master_priv->sarea_priv->pipeB_x = x;
 		master_priv->sarea_priv->pipeB_y = y;
-		break;
-	default:
-		DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
-		break;
+	} else {
+		master_priv->sarea_priv->pipeA_x = x;
+		master_priv->sarea_priv->pipeA_y = y;
 	}
+
+	return 0;
 }
 
 
@@ -708,11 +702,11 @@ static int intel_panel_fitter_pipe (struct drm_device *dev)
 	return 1;
 }
 
-static void intel_crtc_mode_set(struct drm_crtc *crtc,
-				struct drm_display_mode *mode,
-				struct drm_display_mode *adjusted_mode,
-				int x, int y,
-				struct drm_framebuffer *old_fb)
+static int intel_crtc_mode_set(struct drm_crtc *crtc,
+			       struct drm_display_mode *mode,
+			       struct drm_display_mode *adjusted_mode,
+			       int x, int y,
+			       struct drm_framebuffer *old_fb)
 {
 	struct drm_device *dev = crtc->dev;
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -732,13 +726,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 	int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
 	int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
 	int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
-	int refclk;
+	int refclk, num_outputs = 0;
 	intel_clock_t clock;
 	u32 dpll = 0, fp = 0, dspcntr, pipeconf;
 	bool ok, is_sdvo = false, is_dvo = false;
 	bool is_crt = false, is_lvds = false, is_tv = false;
 	struct drm_mode_config *mode_config = &dev->mode_config;
 	struct drm_connector *connector;
+	int ret;
 
 	drm_vblank_pre_modeset(dev, pipe);
 
@@ -768,9 +763,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 			is_crt = true;
 			break;
 		}
+
+		num_outputs++;
 	}
 
-	if (IS_I9XX(dev)) {
+	if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) {
+		refclk = dev_priv->lvds_ssc_freq * 1000;
+		DRM_DEBUG("using SSC reference clock of %d MHz\n", refclk / 1000);
+	} else if (IS_I9XX(dev)) {
 		refclk = 96000;
 	} else {
 		refclk = 48000;
@@ -779,7 +779,7 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 	ok = intel_find_best_PLL(crtc, adjusted_mode->clock, refclk, &clock);
 	if (!ok) {
 		DRM_ERROR("Couldn't find PLL settings for mode!\n");
-		return;
+		return -EINVAL;
 	}
 
 	fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
@@ -829,11 +829,14 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 		}
 	}
 
-	if (is_tv) {
+	if (is_sdvo && is_tv)
+		dpll |= PLL_REF_INPUT_TVCLKINBC;
+	else if (is_tv)
 		/* XXX: just matching BIOS for now */
-/*	dpll |= PLL_REF_INPUT_TVCLKINBC; */
+		/*	dpll |= PLL_REF_INPUT_TVCLKINBC; */
 		dpll |= 3;
-	}
+	else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2)
+		dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
 	else
 		dpll |= PLL_REF_INPUT_DREFCLK;
 
@@ -950,9 +953,13 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 	I915_WRITE(dspcntr_reg, dspcntr);
 
 	/* Flush the plane changes */
-	intel_pipe_set_base(crtc, x, y, old_fb);
+	ret = intel_pipe_set_base(crtc, x, y, old_fb);
+	if (ret != 0)
+	    return ret;
 
 	drm_vblank_post_modeset(dev, pipe);
+
+	return 0;
 }
 
 /** Loads the palette/gamma unit for the CRTC with the prepared values */
@@ -1001,6 +1008,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
 		temp = CURSOR_MODE_DISABLE;
 		addr = 0;
 		bo = NULL;
+		mutex_lock(&dev->struct_mutex);
 		goto finish;
 	}
 
@@ -1023,18 +1031,19 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
 	}
 
 	/* we only need to pin inside GTT if cursor is non-phy */
+	mutex_lock(&dev->struct_mutex);
 	if (!dev_priv->cursor_needs_physical) {
 		ret = i915_gem_object_pin(bo, PAGE_SIZE);
 		if (ret) {
 			DRM_ERROR("failed to pin cursor bo\n");
-			goto fail;
+			goto fail_locked;
 		}
 		addr = obj_priv->gtt_offset;
 	} else {
 		ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
 		if (ret) {
 			DRM_ERROR("failed to attach phys object\n");
-			goto fail;
+			goto fail_locked;
 		}
 		addr = obj_priv->phys_obj->handle->busaddr;
 	}
@@ -1054,10 +1063,9 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
 				i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
 		} else
 			i915_gem_object_unpin(intel_crtc->cursor_bo);
-		mutex_lock(&dev->struct_mutex);
 		drm_gem_object_unreference(intel_crtc->cursor_bo);
-		mutex_unlock(&dev->struct_mutex);
 	}
+	mutex_unlock(&dev->struct_mutex);
 
 	intel_crtc->cursor_addr = addr;
 	intel_crtc->cursor_bo = bo;
@@ -1065,6 +1073,7 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
 	return 0;
 fail:
 	mutex_lock(&dev->struct_mutex);
+fail_locked:
 	drm_gem_object_unreference(bo);
 	mutex_unlock(&dev->struct_mutex);
 	return ret;
@@ -1292,7 +1301,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
 		}
 
 		/* XXX: Handle the 100Mhz refclk */
-		i9xx_clock(96000, &clock);
+		intel_clock(96000, &clock);
 	} else {
 		bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
 
@@ -1304,9 +1313,9 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
 			if ((dpll & PLL_REF_INPUT_MASK) ==
 			    PLLB_REF_INPUT_SPREADSPECTRUMIN) {
 				/* XXX: might not be 66MHz */
-				i8xx_clock(66000, &clock);
+				intel_clock(66000, &clock);
 			} else
-				i8xx_clock(48000, &clock);
+				intel_clock(48000, &clock);
 		} else {
 			if (dpll & PLL_P1_DIVIDE_BY_TWO)
 				clock.p1 = 2;
@@ -1319,7 +1328,7 @@ static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
 			else
 				clock.p2 = 2;
 
-			i8xx_clock(48000, &clock);
+			intel_clock(48000, &clock);
 		}
 	}
 
@@ -1598,7 +1607,9 @@ intel_user_framebuffer_create(struct drm_device *dev,
 
 	ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
 	if (ret) {
+		mutex_lock(&dev->struct_mutex);
 		drm_gem_object_unreference(obj);
+		mutex_unlock(&dev->struct_mutex);
 		return NULL;
 	}
 
diff --git a/drivers/gpu/drm/i915/intel_fb.c b/drivers/gpu/drm/i915/intel_fb.c
index afd1217b8a0..b7f0ebe9f81 100644
--- a/drivers/gpu/drm/i915/intel_fb.c
+++ b/drivers/gpu/drm/i915/intel_fb.c
@@ -473,7 +473,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
 	ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo);
 	if (ret) {
 		DRM_ERROR("failed to allocate fb.\n");
-		goto out_unref;
+		goto out_unpin;
 	}
 
 	list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
@@ -484,7 +484,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
 	info = framebuffer_alloc(sizeof(struct intelfb_par), device);
 	if (!info) {
 		ret = -ENOMEM;
-		goto out_unref;
+		goto out_unpin;
 	}
 
 	par = info->par;
@@ -513,7 +513,7 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
 				       size);
 	if (!info->screen_base) {
 		ret = -ENOSPC;
-		goto out_unref;
+		goto out_unpin;
 	}
 	info->screen_size = size;
 
@@ -608,6 +608,8 @@ static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
 	mutex_unlock(&dev->struct_mutex);
 	return 0;
 
+out_unpin:
+	i915_gem_object_unpin(fbo);
 out_unref:
 	drm_gem_object_unreference(fbo);
 	mutex_unlock(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 6d4f9126535..0d211af9885 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -481,8 +481,6 @@ void intel_lvds_init(struct drm_device *dev)
 		if (dev_priv->panel_fixed_mode) {
 			dev_priv->panel_fixed_mode->type |=
 				DRM_MODE_TYPE_PREFERRED;
-			drm_mode_probed_add(connector,
-					    dev_priv->panel_fixed_mode);
 			goto out;
 		}
 	}
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index a30508b639b..fbe6f3931b1 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -193,7 +193,7 @@ static bool intel_sdvo_write_byte(struct intel_output *intel_output, int addr,
 
 #define SDVO_CMD_NAME_ENTRY(cmd) {cmd, #cmd}
 /** Mapping of command numbers to names, for debug output */
-const static struct _sdvo_cmd_name {
+static const struct _sdvo_cmd_name {
 	u8 cmd;
 	char *name;
 } sdvo_cmd_names[] = {
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index fbb35dc56f5..56485d67369 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -411,7 +411,7 @@ struct tv_mode {
  * These values account for -1s required.
  */
 
-const static struct tv_mode tv_modes[] = {
+static const struct tv_mode tv_modes[] = {
 	{
 		.name		= "NTSC-M",
 		.clock		= 107520,
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index df4cf97e5d9..92965dbb3c1 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -557,8 +557,10 @@ static int radeon_do_engine_reset(struct drm_device * dev)
 }
 
 static void radeon_cp_init_ring_buffer(struct drm_device * dev,
-				       drm_radeon_private_t * dev_priv)
+				       drm_radeon_private_t *dev_priv,
+				       struct drm_file *file_priv)
 {
+	struct drm_radeon_master_private *master_priv;
 	u32 ring_start, cur_read_ptr;
 	u32 tmp;
 
@@ -677,6 +679,14 @@ static void radeon_cp_init_ring_buffer(struct drm_device * dev,
 	dev_priv->scratch[2] = 0;
 	RADEON_WRITE(RADEON_LAST_CLEAR_REG, 0);
 
+	/* reset sarea copies of these */
+	master_priv = file_priv->master->driver_priv;
+	if (master_priv->sarea_priv) {
+		master_priv->sarea_priv->last_frame = 0;
+		master_priv->sarea_priv->last_dispatch = 0;
+		master_priv->sarea_priv->last_clear = 0;
+	}
+
 	radeon_do_wait_for_idle(dev_priv);
 
 	/* Sync everything up */
@@ -1215,7 +1225,7 @@ static int radeon_do_init_cp(struct drm_device *dev, drm_radeon_init_t *init,
 	}
 
 	radeon_cp_load_microcode(dev_priv);
-	radeon_cp_init_ring_buffer(dev, dev_priv);
+	radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
 
 	dev_priv->last_buf = 0;
 
@@ -1281,7 +1291,7 @@ static int radeon_do_cleanup_cp(struct drm_device * dev)
  *
  * Charl P. Botha <http://cpbotha.net>
  */
-static int radeon_do_resume_cp(struct drm_device * dev)
+static int radeon_do_resume_cp(struct drm_device *dev, struct drm_file *file_priv)
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 
@@ -1304,7 +1314,7 @@ static int radeon_do_resume_cp(struct drm_device * dev)
 	}
 
 	radeon_cp_load_microcode(dev_priv);
-	radeon_cp_init_ring_buffer(dev, dev_priv);
+	radeon_cp_init_ring_buffer(dev, dev_priv, file_priv);
 
 	radeon_do_engine_reset(dev);
 	radeon_irq_set_state(dev, RADEON_SW_INT_ENABLE, 1);
@@ -1479,8 +1489,7 @@ int radeon_cp_idle(struct drm_device *dev, void *data, struct drm_file *file_pri
  */
 int radeon_cp_resume(struct drm_device *dev, void *data, struct drm_file *file_priv)
 {
-
-	return radeon_do_resume_cp(dev);
+	return radeon_do_resume_cp(dev, file_priv);
 }
 
 int radeon_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)