Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Daniel writes:
"New stuff for -next. Highlights:
- prep patches for the modeset rework. Note that one of those patches
  touches the fb helper in the common drm code.
- hasw hdmi audio support (Wang Xingchao)
- improved instdone dumping for gen7 (Ben)
- unbound tracking and a few follow-up patches from Chris
- dma_buf->begin/end_cpu_access plus fix for drm/udl (Dave)
- improve mmio error reporting for hsw
- prep patch for WQ_NON_REENTRANT removal (Tejun Heo)
"

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (41 commits)
  drm/i915: Remove __GFP_NO_KSWAPD
  drm/i915: disable rc6 on ilk when vt-d is enabled
  drm/i915: Avoid unbinding due to an interrupted pin_and_fence during execbuffer
  drm/i915: Use new INSTDONE registers (Gen7+)
  drm/i915: Add new INSTDONE registers
  drm/i915: Extract reading INSTDONE
  drm/i915: Use a non-blocking wait for set-to-domain ioctl
  drm/i915: Juggle code order to ease flow of the next patch
  drm/i915: Use cpu relocations if the object is in the GTT but not mappable
  drm/i915: Extract general object init routine
  drm/i915: Protect private gem objects from truncate (such as imported dmabuf)
  drm/i915: Only pwrite through the GTT if there is space in the aperture
  i915: use alloc_ordered_workqueue() instead of explicit UNBOUND w/ max_active = 1
  drm/i915: Find unclaimed MMIO writes.
  drm/i915: Add ERR_INT to gen7 error state
  drm/i915: Cantiga+ cannot handle a hsync front porch of 0
  drm/i915: fix reassignment of variable "intel_dp->DP"
  drm/i915: Try harder to allocate an mmap_offset
  drm/i915: Show pin count in debugfs
  drm/i915: Show (count, size) of purgeable objects in i915_gem_objects
  ...

drivers/gpu/drm/udl/udl_fb.c

@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/fb.h>
+#include <linux/dma-buf.h>
 
 #include "drmP.h"
 #include "drm.h"
@@ -377,16 +378,33 @@ static int udl_user_framebuffer_dirty(struct drm_framebuffer *fb,
 {
 	struct udl_framebuffer *ufb = to_udl_fb(fb);
 	int i;
+	int ret = 0;
 
 	if (!ufb->active_16)
 		return 0;
 
+	if (ufb->obj->base.import_attach) {
+		ret = dma_buf_begin_cpu_access(ufb->obj->base.import_attach->dmabuf,
+					       0, ufb->obj->base.size,
+					       DMA_FROM_DEVICE);
+		if (ret)
+			return ret;
+	}
+
 	for (i = 0; i < num_clips; i++) {
-		udl_handle_damage(ufb, clips[i].x1, clips[i].y1,
+		ret = udl_handle_damage(ufb, clips[i].x1, clips[i].y1,
 				  clips[i].x2 - clips[i].x1,
 				  clips[i].y2 - clips[i].y1);
+		if (ret)
+			break;
 	}
-	return 0;
+
+	if (ufb->obj->base.import_attach) {
+		dma_buf_end_cpu_access(ufb->obj->base.import_attach->dmabuf,
+				       0, ufb->obj->base.size,
+				       DMA_FROM_DEVICE);
+	}
+	return ret;
 }
 
 static void udl_user_framebuffer_destroy(struct drm_framebuffer *fb)

drivers/gpu/drm/udl/udl_gem.c

@@ -181,11 +181,6 @@ int udl_gem_vmap(struct udl_gem_object *obj)
 	int ret;
 
 	if (obj->base.import_attach) {
-		ret = dma_buf_begin_cpu_access(obj->base.import_attach->dmabuf,
-					       0, obj->base.size, DMA_BIDIRECTIONAL);
-		if (ret)
-			return -EINVAL;
-
 		obj->vmapping = dma_buf_vmap(obj->base.import_attach->dmabuf);
 		if (!obj->vmapping)
 			return -ENOMEM;
@@ -206,8 +201,6 @@ void udl_gem_vunmap(struct udl_gem_object *obj)
 {
 	if (obj->base.import_attach) {
 		dma_buf_vunmap(obj->base.import_attach->dmabuf, obj->vmapping);
-		dma_buf_end_cpu_access(obj->base.import_attach->dmabuf, 0,
-				       obj->base.size, DMA_BIDIRECTIONAL);
 		return;
 	}