diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index 3767855..30c36ac 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -178,6 +178,7 @@
 	 * popup and for the GTT.
 	 */
 	int gtt_entries;			/* i830+ */
+	int gtt_total_size;
 	union {
 		void __iomem *i9xx_flush_page;
 		void *i8xx_flush_page;
@@ -1153,7 +1154,7 @@
 	readl(intel_private.registers+I810_PGETBL_CTL);	/* PCI Posting. */
 
 	if (agp_bridge->driver->needs_scratch_page) {
-		for (i = intel_private.gtt_entries; i < current_size->num_entries; i++) {
+		for (i = intel_private.gtt_entries; i < intel_private.gtt_total_size; i++) {
 			writel(agp_bridge->scratch_page, intel_private.gtt+i);
 		}
 		readl(intel_private.gtt+i-1);	/* PCI Posting. */
@@ -1308,6 +1309,8 @@
 	if (!intel_private.gtt)
 		return -ENOMEM;
 
+	intel_private.gtt_total_size = gtt_map_size / 4;
+
 	temp &= 0xfff80000;
 
 	intel_private.registers = ioremap(temp, 128 * 4096);
@@ -1395,6 +1398,8 @@
 	if (!intel_private.gtt)
 		return -ENOMEM;
 
+	intel_private.gtt_total_size = gtt_size / 4;
+
 	intel_private.registers = ioremap(temp, 128 * 4096);
 	if (!intel_private.registers) {
 		iounmap(intel_private.gtt);
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index eeed4e3..18476bf 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -97,13 +97,14 @@
 	{
 		struct drm_gem_object *obj = obj_priv->obj;
 
-		seq_printf(m, "    %p: %s %8zd %08x %08x %d %s",
+		seq_printf(m, "    %p: %s %8zd %08x %08x %d%s%s",
 			   obj,
 			   get_pin_flag(obj_priv),
 			   obj->size,
 			   obj->read_domains, obj->write_domain,
 			   obj_priv->last_rendering_seqno,
-			   obj_priv->dirty ? "dirty" : "");
+			   obj_priv->dirty ? " dirty" : "",
+			   obj_priv->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 
 		if (obj->name)
 			seq_printf(m, " (name: %d)", obj->name);
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index df5b943..fbecac7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -383,8 +383,6 @@
 	u32 saveFDI_RXA_IMR;
 	u32 saveFDI_RXB_IMR;
 	u32 saveCACHE_MODE_0;
-	u32 saveD_STATE;
-	u32 saveDSPCLK_GATE_D;
 	u32 saveMI_ARB_STATE;
 	u32 saveSWF0[16];
 	u32 saveSWF1[16];
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5b46623..917b837 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -1288,6 +1288,7 @@
 	list->hash.key = list->file_offset_node->start;
 	if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) {
 		DRM_ERROR("failed to add to map hash\n");
+		ret = -ENOMEM;
 		goto out_free_mm;
 	}
 
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index ae17c4b..85f4c5d 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -546,7 +546,6 @@
 		/*
 		 * Wakeup waiting processes so they don't hang
 		 */
-		printk("i915: Waking up sleeping processes\n");
 		DRM_WAKEUP(&dev_priv->irq_queue);
 	}
 
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index ab35e81..d5ebb00 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -756,10 +756,6 @@
 		dev_priv->saveIMR = I915_READ(IMR);
 	}
 
-	/* Clock gating state */
-	dev_priv->saveD_STATE = I915_READ(D_STATE);
-	dev_priv->saveDSPCLK_GATE_D = I915_READ(DSPCLK_GATE_D); /* Not sure about this */
-
 	/* Cache mode state */
 	dev_priv->saveCACHE_MODE_0 = I915_READ(CACHE_MODE_0);
 
@@ -834,8 +830,7 @@
 	}
 
 	/* Clock gating state */
-	I915_WRITE (D_STATE, dev_priv->saveD_STATE);
-	I915_WRITE (DSPCLK_GATE_D, dev_priv->saveDSPCLK_GATE_D);
+	intel_init_clock_gating(dev);
 
 	/* Cache mode state */
 	I915_WRITE (CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5146b80..52cd9b0 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4584,28 +4584,33 @@
 		struct drm_i915_gem_object *obj_priv;
 		int ret;
 
-		pwrctx = drm_gem_object_alloc(dev, 4096);
-		if (!pwrctx) {
-			DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
-			goto out;
+		if (dev_priv->pwrctx) {
+			obj_priv = dev_priv->pwrctx->driver_private;
+		} else {
+			pwrctx = drm_gem_object_alloc(dev, 4096);
+			if (!pwrctx) {
+				DRM_DEBUG("failed to alloc power context, "
+					  "RC6 disabled\n");
+				goto out;
+			}
+
+			ret = i915_gem_object_pin(pwrctx, 4096);
+			if (ret) {
+				DRM_ERROR("failed to pin power context: %d\n",
+					  ret);
+				drm_gem_object_unreference(pwrctx);
+				goto out;
+			}
+
+			i915_gem_object_set_to_gtt_domain(pwrctx, 1);
+
+			dev_priv->pwrctx = pwrctx;
+			obj_priv = pwrctx->driver_private;
 		}
 
-		ret = i915_gem_object_pin(pwrctx, 4096);
-		if (ret) {
-			DRM_ERROR("failed to pin power context: %d\n", ret);
-			drm_gem_object_unreference(pwrctx);
-			goto out;
-		}
-
-		i915_gem_object_set_to_gtt_domain(pwrctx, 1);
-
-		obj_priv = pwrctx->driver_private;
-
 		I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
 		I915_WRITE(MCHBAR_RENDER_STANDBY,
 			   I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
-
-		dev_priv->pwrctx = pwrctx;
 	}
 
 out:
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 9ffa31e..a51573d 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -208,6 +208,7 @@
 				    u16 blue, int regno);
 extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 				    u16 *blue, int regno);
+extern void intel_init_clock_gating(struct drm_device *dev);
 
 extern int intel_framebuffer_create(struct drm_device *dev,
 				    struct drm_mode_fb_cmd *mode_cmd,