diff --git a/drivers/video/drm/drm_crtc_helper.c b/drivers/video/drm/drm_crtc_helper.c
index 7144c2088..a53f96da8 100644
--- a/drivers/video/drm/drm_crtc_helper.c
+++ b/drivers/video/drm/drm_crtc_helper.c
@@ -353,8 +353,6 @@ bool drm_crtc_helper_set_mode(struct drm_crtc *crtc,
 	struct drm_encoder *encoder;
 	bool ret = true;
 
-    ENTER();
-
 	crtc->enabled = drm_helper_crtc_in_use(crtc);
 	if (!crtc->enabled)
 		return true;
@@ -469,8 +467,6 @@ done:
 		crtc->y = saved_y;
 	}
 
-    LEAVE();
-
 	return ret;
 }
 EXPORT_SYMBOL(drm_crtc_helper_set_mode);
diff --git a/drivers/video/drm/i915/bitmap.c b/drivers/video/drm/i915/bitmap.c
index 308751d1c..4a709e6ca 100644
--- a/drivers/video/drm/i915/bitmap.c
+++ b/drivers/video/drm/i915/bitmap.c
@@ -27,7 +27,6 @@ void __attribute__((regparm(1))) destroy_bitmap(bitmap_t *bitmap)
     bitmap->obj->base.write_domain = I915_GEM_DOMAIN_CPU;
 
     mutex_lock(&main_device->struct_mutex);
-
     drm_gem_object_unreference(&bitmap->obj->base);
     mutex_unlock(&main_device->struct_mutex);
 
@@ -210,6 +209,11 @@ int create_surface(struct drm_device *dev, struct io_call_10 *pbitmap)
 
             MapPage(vaddr, page, 0x207);        //map as shared page
         };
+        for(;i < max_count; i++, vaddr+= PAGE_SIZE)
+        {
+            MapPage(vaddr, 0, 0);        //map as shared page
+        };
+
         bitmap->page_count = page_count;
         bitmap->max_count  = max_count;
     };
@@ -339,13 +343,7 @@ int resize_surface(struct io_call_14 *pbitmap)
     DRM_DEBUG("new width %d height %d pitch %d size %d\n",
             width, height, pitch, size);
 
-    if( page_count == bitmap->page_count )
-    {
-        bitmap->width  = width;
-        bitmap->height = height;
-        bitmap->pitch  = pitch;
-    }
-    else if(page_count > bitmap->page_count)
+    if(page_count > bitmap->page_count)
     {
         char *vaddr = bitmap->uaddr + PAGE_SIZE * bitmap->page_count;
 
@@ -366,8 +364,6 @@ int resize_surface(struct io_call_14 *pbitmap)
         DRM_DEBUG("%s alloc %d pages\n", __FUNCTION__,
                   page_count - bitmap->page_count);
 
-//        mutex_lock(&main_device->struct_mutex);
-
         i915_gem_object_unpin(bitmap->obj);
         i915_gem_object_unbind(bitmap->obj);
         bitmap->obj->base.size = size;
@@ -376,23 +372,48 @@ int resize_surface(struct io_call_14 *pbitmap)
         ret = i915_gem_object_pin(bitmap->obj, PAGE_SIZE, true,true);
         if (ret)
             goto err4;
-//        mutex_unlock(&main_device->struct_mutex);
 
         bitmap->page_count = page_count;
-        bitmap->width  = width;
-        bitmap->height = height;
-        bitmap->pitch  = pitch;
+        bitmap->gaddr  = bitmap->obj->gtt_offset;
+    }
+    else if(page_count < bitmap->page_count)
+    {
+        char *vaddr = bitmap->uaddr + PAGE_SIZE * page_count;
+
+        i915_gem_object_unpin(bitmap->obj);
+        i915_gem_object_unbind(bitmap->obj);
+
+        pages = bitmap->obj->allocated_pages;
+
+        DRM_DEBUG("old pages %d new_pages %d vaddr %x\n",
+                bitmap->page_count, page_count, vaddr);
+
+        for(i = page_count; i < bitmap->page_count; i++, vaddr+= PAGE_SIZE)
+        {
+            MapPage(vaddr, 0, 0);        //unmap
+
+            FreePage(pages[i]);
+            pages[i] = 0;
+    };
+
+        DRM_DEBUG("%s release %d pages\n", __FUNCTION__,
+                  bitmap->page_count - page_count);
+
+        bitmap->obj->base.size = size;
+        bitmap->obj->pages.nents = page_count;
+
+        ret = i915_gem_object_pin(bitmap->obj, PAGE_SIZE, true,true);
+        if (ret)
+            goto err3;
+
+        bitmap->page_count = page_count;
         bitmap->gaddr  = bitmap->obj->gtt_offset;
     };
 
-    if(ret != 0 )
-    {
-        pbitmap->data  = NULL;
-        pbitmap->pitch = 0;
+    bitmap->width  = width;
+    bitmap->height = height;
+    bitmap->pitch  = pitch;
 
-        dbgprintf("%s fail\n", __FUNCTION__);
-        return ret;
-    };
 
     pbitmap->data  = bitmap->uaddr;
     pbitmap->pitch = bitmap->pitch;
@@ -403,6 +424,7 @@ err4:
     while (i-- > bitmap->page_count)
         FreePage(pages[i]);
 
+err3:
     return -1;
 };
 
@@ -447,6 +469,8 @@ void __attribute__((regparm(1))) destroy_context(struct context *context)
 
     context_map[context->slot] = NULL;
 
+    FreeKernelSpace(context->cmd_buffer);
+
     mutex_lock(&main_device->struct_mutex);
     drm_gem_object_unreference(&context->obj->base);
     mutex_unlock(&main_device->struct_mutex);
diff --git a/drivers/video/drm/i915/i915_irq.c b/drivers/video/drm/i915/i915_irq.c
index 626e566ed..961e8acf0 100644
--- a/drivers/video/drm/i915/i915_irq.c
+++ b/drivers/video/drm/i915/i915_irq.c
@@ -42,6 +42,14 @@
 
 #define DRM_IRQ_ARGS            void *arg
 
+static struct drm_driver {
+    irqreturn_t(*irq_handler) (DRM_IRQ_ARGS);
+    void (*irq_preinstall) (struct drm_device *dev);
+    int (*irq_postinstall) (struct drm_device *dev);
+}drm_driver;
+
+static struct drm_driver *driver = &drm_driver;
+
 #define DRM_WAKEUP( queue ) wake_up( queue )
 #define DRM_INIT_WAITQUEUE( queue ) init_waitqueue_head( queue )
 
@@ -2134,8 +2142,8 @@ static irqreturn_t i915_irq_handler(DRM_IRQ_ARGS)
 			int plane = pipe;
 			if (IS_MOBILE(dev))
 				plane = !plane;
-			if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS &&
-			    drm_handle_vblank(dev, pipe)) {
+            if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS /* &&
+                drm_handle_vblank(dev, pipe) */) {
 				if (iir & flip[plane]) {
 //					intel_prepare_page_flip(dev, plane);
 //					intel_finish_page_flip(dev, pipe);
@@ -2378,11 +2386,11 @@ static irqreturn_t i965_irq_handler(DRM_IRQ_ARGS)
 //			intel_prepare_page_flip(dev, 1);
 
 		for_each_pipe(pipe) {
-			if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
-			    drm_handle_vblank(dev, pipe)) {
+//           if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
+//               drm_handle_vblank(dev, pipe)) {
 //				i915_pageflip_stall_check(dev, pipe);
 //				intel_finish_page_flip(dev, pipe);
-			}
+//           }
 
 			if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
 				blc_event = true;
@@ -2441,91 +2449,48 @@ static void i965_irq_uninstall(struct drm_device * dev)
 void intel_irq_init(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
-#if 0
-//	INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func);
-//	INIT_WORK(&dev_priv->error_work, i915_error_work_func);
-//	INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work);
-//	INIT_WORK(&dev_priv->parity_error_work, ivybridge_parity_work);
-
-	dev->driver->get_vblank_counter = i915_get_vblank_counter;
-	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
-	if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) {
-		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
-		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
-	}
-
-//	if (drm_core_check_feature(dev, DRIVER_MODESET))
-		dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
-//	else
-//		dev->driver->get_vblank_timestamp = NULL;
-	dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
 
 	if (IS_VALLEYVIEW(dev)) {
-		dev->driver->irq_handler = valleyview_irq_handler;
-		dev->driver->irq_preinstall = valleyview_irq_preinstall;
-		dev->driver->irq_postinstall = valleyview_irq_postinstall;
-		dev->driver->irq_uninstall = valleyview_irq_uninstall;
-		dev->driver->enable_vblank = valleyview_enable_vblank;
-		dev->driver->disable_vblank = valleyview_disable_vblank;
+        driver->irq_handler = valleyview_irq_handler;
+        driver->irq_preinstall = valleyview_irq_preinstall;
+        driver->irq_postinstall = valleyview_irq_postinstall;
 	} else if (IS_IVYBRIDGE(dev)) {
 		/* Share pre & uninstall handlers with ILK/SNB */
-		dev->driver->irq_handler = ivybridge_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ivybridge_enable_vblank;
-		dev->driver->disable_vblank = ivybridge_disable_vblank;
+        driver->irq_handler = ivybridge_irq_handler;
+        driver->irq_preinstall = ironlake_irq_preinstall;
+        driver->irq_postinstall = ivybridge_irq_postinstall;
 	} else if (IS_HASWELL(dev)) {
 		/* Share interrupts handling with IVB */
-		dev->driver->irq_handler = ivybridge_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ivybridge_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ivybridge_enable_vblank;
-		dev->driver->disable_vblank = ivybridge_disable_vblank;
+        driver->irq_handler = ivybridge_irq_handler;
+        driver->irq_preinstall = ironlake_irq_preinstall;
+        driver->irq_postinstall = ivybridge_irq_postinstall;
 	} else if (HAS_PCH_SPLIT(dev)) {
-		dev->driver->irq_handler = ironlake_irq_handler;
-		dev->driver->irq_preinstall = ironlake_irq_preinstall;
-		dev->driver->irq_postinstall = ironlake_irq_postinstall;
-		dev->driver->irq_uninstall = ironlake_irq_uninstall;
-		dev->driver->enable_vblank = ironlake_enable_vblank;
-		dev->driver->disable_vblank = ironlake_disable_vblank;
+        driver->irq_handler = ironlake_irq_handler;
+        driver->irq_preinstall = ironlake_irq_preinstall;
+        driver->irq_postinstall = ironlake_irq_postinstall;
 	} else {
 		if (INTEL_INFO(dev)->gen == 2) {
-			dev->driver->irq_preinstall = i8xx_irq_preinstall;
-			dev->driver->irq_postinstall = i8xx_irq_postinstall;
-			dev->driver->irq_handler = i8xx_irq_handler;
-			dev->driver->irq_uninstall = i8xx_irq_uninstall;
 		} else if (INTEL_INFO(dev)->gen == 3) {
-			dev->driver->irq_preinstall = i915_irq_preinstall;
-			dev->driver->irq_postinstall = i915_irq_postinstall;
-			dev->driver->irq_uninstall = i915_irq_uninstall;
-			dev->driver->irq_handler = i915_irq_handler;
+            driver->irq_handler = i915_irq_handler;
+            driver->irq_preinstall = i915_irq_preinstall;
+            driver->irq_postinstall = i915_irq_postinstall;
 		} else {
-			dev->driver->irq_preinstall = i965_irq_preinstall;
-			dev->driver->irq_postinstall = i965_irq_postinstall;
-			dev->driver->irq_uninstall = i965_irq_uninstall;
-			dev->driver->irq_handler = i965_irq_handler;
+            driver->irq_handler = i965_irq_handler;
+            driver->irq_preinstall = i965_irq_preinstall;
+            driver->irq_postinstall = i965_irq_postinstall;
 		}
-		dev->driver->enable_vblank = i915_enable_vblank;
-		dev->driver->disable_vblank = i915_disable_vblank;
 	}
-#endif
 }
 
 
-static struct drm_device *irq_device;
-
-void irq_handler_kms()
-{
-    ironlake_irq_handler(irq_device);
-}
-
 int drm_irq_install(struct drm_device *dev)
 {
+    unsigned long sh_flags = 0;
     int irq_line;
     int ret = 0;
 
+    char *irqname;
+
     mutex_lock(&dev->struct_mutex);
 
     /* Driver must have been initialized */
@@ -2541,39 +2506,28 @@ int drm_irq_install(struct drm_device *dev)
     dev->irq_enabled = 1;
     mutex_unlock(&dev->struct_mutex);
 
-    irq_device = dev;
     irq_line   = drm_dev_to_irq(dev);
 
     DRM_DEBUG("irq=%d\n", drm_dev_to_irq(dev));
 
-    ironlake_irq_preinstall(dev);
+    /* Before installing handler */
+    if (driver->irq_preinstall)
+            driver->irq_preinstall(dev);
 
-    ret = AttachIntHandler(irq_line, irq_handler_kms, 2);
-    if (ret == 0) {
-        mutex_lock(&dev->struct_mutex);
-        dev->irq_enabled = 0;
-        mutex_unlock(&dev->struct_mutex);
-        return ret;
+    ret = AttachIntHandler(irq_line, driver->irq_handler, (u32)dev);
+
+    /* After installing handler */
+    if (driver->irq_postinstall)
+            ret = driver->irq_postinstall(dev);
+
+    if (ret < 0) {
+            DRM_ERROR(__FUNCTION__);
     }
 
-    ret = ironlake_irq_postinstall(dev);
-
-//    if (ret < 0) {
-//        mutex_lock(&dev->struct_mutex);
-//        dev->irq_enabled = 0;
-//        mutex_unlock(&dev->struct_mutex);
-//        free_irq(drm_dev_to_irq(dev), dev);
-//    }
-
     u16_t cmd = PciRead16(dev->pdev->busnr, dev->pdev->devfn, 4);
-
     cmd&= ~(1<<10);
-
     PciWrite16(dev->pdev->busnr, dev->pdev->devfn, 4, cmd);
 
-    DRM_DEBUG("i915: irq initialized.\n");
     return ret;
 }
 
-
-