diff --git a/arch/x86/lguest/Makefile b/arch/x86/lguest/Makefile
index 27f0c9e..94e0e54 100644
--- a/arch/x86/lguest/Makefile
+++ b/arch/x86/lguest/Makefile
@@ -1 +1,2 @@
 obj-y		:= i386_head.o boot.o
+CFLAGS_boot.o	:= $(call cc-option, -fno-stack-protector)
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index ca7ec44..33a93b4 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -67,6 +67,7 @@
 #include <asm/mce.h>
 #include <asm/io.h>
 #include <asm/i387.h>
+#include <asm/stackprotector.h>
 #include <asm/reboot.h>		/* for struct machine_ops */
 
 /*G:010 Welcome to the Guest!
@@ -1088,13 +1089,21 @@
 	 * lguest_init() where the rest of the fairly chaotic boot setup
 	 * occurs. */
 
+	/* The stack protector is a weird thing where gcc places a canary
+	 * value on the stack and then checks it on return.  This file is
+	 * compiled with -fno-stack-protector it, so we got this far without
+	 * problems.  The value of the canary is kept at offset 20 from the
+	 * %gs register, so we need to set that up before calling C functions
+	 * in other files. */
+	setup_stack_canary_segment(0);
+	/* We could just call load_stack_canary_segment(), but we might as
+	 * call switch_to_new_gdt() which loads the whole table and sets up
+	 * the per-cpu segment descriptor register %fs as well. */
+	switch_to_new_gdt(0);
+
 	/* As described in head_32.S, we map the first 128M of memory. */
 	max_pfn_mapped = (128*1024*1024) >> PAGE_SHIFT;
 
-	/* Load the %fs segment register (the per-cpu segment register) with
-	 * the normal data segment to get through booting. */
-	asm volatile ("mov %0, %%fs" : : "r" (__KERNEL_DS) : "memory");
-
 	/* The Host<->Guest Switcher lives at the top of our address space, and
 	 * the Host told us how big it is when we made LGUEST_INIT hypercall:
 	 * it put the answer in lguest_data.reserve_mem  */
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 8f05c38..65e12bc 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -694,6 +694,9 @@
 		written += chunk - unwritten;
 		if (unwritten)
 			break;
+		/* Consider changing this to just 'signal_pending()' with lots of testing */
+		if (fatal_signal_pending(current))
+			return written ? written : -EINTR;
 		buf += chunk;
 		count -= chunk;
 		cond_resched();
diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c
index 0411d91..80a2575 100644
--- a/drivers/gpu/drm/drm_bufs.c
+++ b/drivers/gpu/drm/drm_bufs.c
@@ -371,7 +371,8 @@
 	list->user_token = list->hash.key << PAGE_SHIFT;
 	mutex_unlock(&dev->struct_mutex);
 
-	list->master = dev->primary->master;
+	if (!(map->flags & _DRM_DRIVER))
+		list->master = dev->primary->master;
 	*maplist = list;
 	return 0;
 	}
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 94a7688..8fab789 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2294,7 +2294,12 @@
 		}
 	}
 
-	if (connector->funcs->set_property)
+	/* Do DPMS ourselves */
+	if (property == connector->dev->mode_config.dpms_property) {
+		if (connector->funcs->dpms)
+			(*connector->funcs->dpms)(connector, (int) out_resp->value);
+		ret = 0;
+	} else if (connector->funcs->set_property)
 		ret = connector->funcs->set_property(connector, property, out_resp->value);
 
 	/* store the property value if succesful */
diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
index 4589044..a6f73f1 100644
--- a/drivers/gpu/drm/drm_crtc_helper.c
+++ b/drivers/gpu/drm/drm_crtc_helper.c
@@ -199,6 +199,29 @@
 }
 
 /**
+ * drm_helper_encoder_in_use - check if a given encoder is in use
+ * @encoder: encoder to check
+ *
+ * LOCKING:
+ * Caller must hold mode config lock.
+ *
+ * Walk @encoders's DRM device's mode_config and see if it's in use.
+ *
+ * RETURNS:
+ * True if @encoder is part of the mode_config, false otherwise.
+ */
+bool drm_helper_encoder_in_use(struct drm_encoder *encoder)
+{
+	struct drm_connector *connector;
+	struct drm_device *dev = encoder->dev;
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+		if (connector->encoder == encoder)
+			return true;
+	return false;
+}
+EXPORT_SYMBOL(drm_helper_encoder_in_use);
+
+/**
  * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config
  * @crtc: CRTC to check
  *
@@ -216,7 +239,7 @@
 	struct drm_device *dev = crtc->dev;
 	/* FIXME: Locking around list access? */
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head)
-		if (encoder->crtc == crtc)
+		if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder))
 			return true;
 	return false;
 }
@@ -240,7 +263,7 @@
 
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		encoder_funcs = encoder->helper_private;
-		if (!encoder->crtc)
+		if (!drm_helper_encoder_in_use(encoder))
 			(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
 	}
 
@@ -935,6 +958,88 @@
 }
 EXPORT_SYMBOL(drm_helper_initial_config);
 
+static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder)
+{
+	int dpms = DRM_MODE_DPMS_OFF;
+	struct drm_connector *connector;
+	struct drm_device *dev = encoder->dev;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+		if (connector->encoder == encoder)
+			if (connector->dpms < dpms)
+				dpms = connector->dpms;
+	return dpms;
+}
+
+static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc)
+{
+	int dpms = DRM_MODE_DPMS_OFF;
+	struct drm_connector *connector;
+	struct drm_device *dev = crtc->dev;
+
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
+		if (connector->encoder && connector->encoder->crtc == crtc)
+			if (connector->dpms < dpms)
+				dpms = connector->dpms;
+	return dpms;
+}
+
+/**
+ * drm_helper_connector_dpms
+ * @connector affected connector
+ * @mode DPMS mode
+ *
+ * Calls the low-level connector DPMS function, then
+ * calls appropriate encoder and crtc DPMS functions as well
+ */
+void drm_helper_connector_dpms(struct drm_connector *connector, int mode)
+{
+	struct drm_encoder *encoder = connector->encoder;
+	struct drm_crtc *crtc = encoder ? encoder->crtc : NULL;
+	int old_dpms;
+
+	if (mode == connector->dpms)
+		return;
+
+	old_dpms = connector->dpms;
+	connector->dpms = mode;
+
+	/* from off to on, do crtc then encoder */
+	if (mode < old_dpms) {
+		if (crtc) {
+			struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+			if (crtc_funcs->dpms)
+				(*crtc_funcs->dpms) (crtc,
+						     drm_helper_choose_crtc_dpms(crtc));
+		}
+		if (encoder) {
+			struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+			if (encoder_funcs->dpms)
+				(*encoder_funcs->dpms) (encoder,
+							drm_helper_choose_encoder_dpms(encoder));
+		}
+	}
+
+	/* from on to off, do encoder then crtc */
+	if (mode > old_dpms) {
+		if (encoder) {
+			struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+			if (encoder_funcs->dpms)
+				(*encoder_funcs->dpms) (encoder,
+							drm_helper_choose_encoder_dpms(encoder));
+		}
+		if (crtc) {
+			struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+			if (crtc_funcs->dpms)
+				(*crtc_funcs->dpms) (crtc,
+						     drm_helper_choose_crtc_dpms(crtc));
+		}
+	}
+
+	return;
+}
+EXPORT_SYMBOL(drm_helper_connector_dpms);
+
 /**
  * drm_hotplug_stage_two
  * @dev DRM device
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index ca9c616..6f6b264 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -289,6 +289,11 @@
 	struct drm_display_mode *mode;
 	struct detailed_pixel_timing *pt = &timing->data.pixel_data;
 
+	/* ignore tiny modes */
+	if (((pt->hactive_hi << 8) | pt->hactive_lo) < 64 ||
+	    ((pt->vactive_hi << 8) | pt->hactive_lo) < 64)
+		return NULL;
+
 	if (pt->stereo) {
 		printk(KERN_WARNING "stereo mode not supported\n");
 		return NULL;
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 93e677a..fc8e5ac 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -196,6 +196,7 @@
 {
 	int ret = 0;
 	unsigned long sh_flags = 0;
+	char *irqname;
 
 	if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
 		return -EINVAL;
@@ -227,8 +228,13 @@
 	if (drm_core_check_feature(dev, DRIVER_IRQ_SHARED))
 		sh_flags = IRQF_SHARED;
 
+	if (dev->devname)
+		irqname = dev->devname;
+	else
+		irqname = dev->driver->name;
+
 	ret = request_irq(drm_dev_to_irq(dev), dev->driver->irq_handler,
-			  sh_flags, dev->devname, dev);
+			  sh_flags, irqname, dev);
 
 	if (ret < 0) {
 		mutex_lock(&dev->struct_mutex);
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 8f93729..9987ab8 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -147,7 +147,7 @@
 	enum drm_connector_status status;
 
 	status = connector->funcs->detect(connector);
-	return snprintf(buf, PAGE_SIZE, "%s",
+	return snprintf(buf, PAGE_SIZE, "%s\n",
 			drm_get_connector_status_name(status));
 }
 
@@ -166,7 +166,7 @@
 	if (ret)
 		return 0;
 
-	return snprintf(buf, PAGE_SIZE, "%s",
+	return snprintf(buf, PAGE_SIZE, "%s\n",
 			drm_get_dpms_name((int)dpms_status));
 }
 
@@ -176,7 +176,7 @@
 {
 	struct drm_connector *connector = to_drm_connector(device);
 
-	return snprintf(buf, PAGE_SIZE, connector->encoder ? "enabled" :
+	return snprintf(buf, PAGE_SIZE, "%s\n", connector->encoder ? "enabled" :
 			"disabled");
 }
 
@@ -317,6 +317,7 @@
 
 static struct bin_attribute edid_attr = {
 	.attr.name = "edid",
+	.attr.mode = 0444,
 	.size = 128,
 	.read = edid_show,
 };
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 53d5445..0ccb63e 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -987,12 +987,6 @@
 	int fb_bar = IS_I9XX(dev) ? 2 : 0;
 	int ret = 0;
 
-	dev->devname = kstrdup(DRIVER_NAME, GFP_KERNEL);
-	if (!dev->devname) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
 	dev->mode_config.fb_base = drm_get_resource_start(dev, fb_bar) &
 		0xff000000;
 
@@ -1006,7 +1000,7 @@
 
 	ret = i915_probe_agp(dev, &agp_size, &prealloc_size);
 	if (ret)
-		goto kfree_devname;
+		goto out;
 
 	/* Basic memrange allocator for stolen space (aka vram) */
 	drm_mm_init(&dev_priv->vram, 0, prealloc_size);
@@ -1024,7 +1018,7 @@
 
 	ret = i915_gem_init_ringbuffer(dev);
 	if (ret)
-		goto kfree_devname;
+		goto out;
 
 	/* Allow hardware batchbuffers unless told otherwise.
 	 */
@@ -1056,8 +1050,6 @@
 
 destroy_ringbuffer:
 	i915_gem_cleanup_ringbuffer(dev);
-kfree_devname:
-	kfree(dev->devname);
 out:
 	return ret;
 }
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 640f515..79acc4f 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -381,11 +381,6 @@
 				  struct drm_property *property,
 				  uint64_t value)
 {
-	struct drm_device *dev = connector->dev;
-
-	if (property == dev->mode_config.dpms_property && connector->encoder)
-		intel_crt_dpms(connector->encoder, (uint32_t)(value & 0xf));
-
 	return 0;
 }
 
@@ -402,6 +397,7 @@
 };
 
 static const struct drm_connector_funcs intel_crt_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.detect = intel_crt_detect,
 	.fill_modes = drm_helper_probe_single_connector_modes,
 	.destroy = intel_crt_destroy,
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index 8b8d6e6..1ee3007 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -316,6 +316,7 @@
 };
 
 static const struct drm_connector_funcs intel_dvo_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.save = intel_dvo_save,
 	.restore = intel_dvo_restore,
 	.detect = intel_dvo_detect,
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index d0983bb..7d6bdd7 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -219,6 +219,7 @@
 };
 
 static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.save = intel_hdmi_save,
 	.restore = intel_hdmi_restore,
 	.detect = intel_hdmi_detect,
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 53731f0..53cccfa 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -343,11 +343,6 @@
 				   struct drm_property *property,
 				   uint64_t value)
 {
-	struct drm_device *dev = connector->dev;
-
-	if (property == dev->mode_config.dpms_property && connector->encoder)
-		intel_lvds_dpms(connector->encoder, (uint32_t)(value & 0xf));
-
 	return 0;
 }
 
@@ -366,6 +361,7 @@
 };
 
 static const struct drm_connector_funcs intel_lvds_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.save = intel_lvds_save,
 	.restore = intel_lvds_restore,
 	.detect = intel_lvds_detect,
@@ -391,7 +387,7 @@
 }
 
 /* These systems claim to have LVDS, but really don't */
-static const struct dmi_system_id __initdata intel_no_lvds[] = {
+static const struct dmi_system_id intel_no_lvds[] = {
 	{
 		.callback = intel_no_lvds_dmi_callback,
 		.ident = "Apple Mac Mini (Core series)",
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index f3ef6bf..3093b4d 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1616,6 +1616,7 @@
 };
 
 static const struct drm_connector_funcs intel_sdvo_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.save = intel_sdvo_save,
 	.restore = intel_sdvo_restore,
 	.detect = intel_sdvo_detect,
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index d2c3298..98ac054 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1626,6 +1626,7 @@
 };
 
 static const struct drm_connector_funcs intel_tv_connector_funcs = {
+	.dpms = drm_helper_connector_dpms,
 	.save = intel_tv_save,
 	.restore = intel_tv_restore,
 	.detect = intel_tv_detect,
diff --git a/drivers/gpu/drm/radeon/radeon_cp.c b/drivers/gpu/drm/radeon/radeon_cp.c
index 77a7a4d..aff90bb 100644
--- a/drivers/gpu/drm/radeon/radeon_cp.c
+++ b/drivers/gpu/drm/radeon/radeon_cp.c
@@ -2185,9 +2185,9 @@
 
 	/* check if the ring is padded out to 16-dword alignment */
 
-	tail_aligned = dev_priv->ring.tail & 0xf;
+	tail_aligned = dev_priv->ring.tail & (RADEON_RING_ALIGN-1);
 	if (tail_aligned) {
-		int num_p2 = 16 - tail_aligned;
+		int num_p2 = RADEON_RING_ALIGN - tail_aligned;
 
 		ring = dev_priv->ring.start;
 		/* pad with some CP_PACKET2 */
diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index 8071d96..0c6bfc1 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -1964,11 +1964,14 @@
 
 #define RING_LOCALS	int write, _nr, _align_nr; unsigned int mask; u32 *ring;
 
+#define RADEON_RING_ALIGN 16
+
 #define BEGIN_RING( n ) do {						\
 	if ( RADEON_VERBOSE ) {						\
 		DRM_INFO( "BEGIN_RING( %d )\n", (n));			\
 	}								\
-	_align_nr = (n + 0xf) & ~0xf;					\
+	_align_nr = RADEON_RING_ALIGN - ((dev_priv->ring.tail + n) & (RADEON_RING_ALIGN-1));	\
+	_align_nr += n;							\
 	if (dev_priv->ring.space <= (_align_nr * sizeof(u32))) {	\
                 COMMIT_RING();						\
 		radeon_wait_ring( dev_priv, _align_nr * sizeof(u32));	\
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3c1924c..7300fb8 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -471,6 +471,9 @@
 	u32 property_ids[DRM_CONNECTOR_MAX_PROPERTY];
 	uint64_t property_values[DRM_CONNECTOR_MAX_PROPERTY];
 
+	/* requested DPMS state */
+	int dpms;
+
 	void *helper_private;
 
 	uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index ec073d82..6769ff6 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -99,6 +99,8 @@
 				     struct drm_framebuffer *old_fb);
 extern bool drm_helper_crtc_in_use(struct drm_crtc *crtc);
 
+extern void drm_helper_connector_dpms(struct drm_connector *connector, int mode);
+
 extern int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb,
 					  struct drm_mode_fb_cmd *mode_cmd);