Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes (mostly nouveau) from Dave Airlie:
 "One doc buidling fixes for a file that moved, along with a bunch of
  nouveau fixes, one a build problem on ARM"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/doc: Refer to proper source file
  drm/nouveau/platform: fix compilation error
  drm/nouveau/gk20a: add LTC device
  drm/nouveau: warn if we fail to re-pin fb on resume
  drm/nouveau/nvif: fix dac load detect method definition
  drm/gf100-/gr: fix -ENOSPC detection when allocating zbc table entries
  drm/nouveau/nvif: return null pointers on failure, in addition to ret != 0
  drm/nouveau/ltc: fix tag base address getting truncated if above 4GiB
  drm/nvc0-/fb/ram: fix use of non-existant ram if partitions aren't uniform
  drm/nouveau/bar: behave better if ioremap failed
  drm/nouveau/kms: nouveau_fbcon_accel_fini can be static
  drm/nouveau: kill unused variable warning if !__OS_HAS_AGP
  drm/nouveau/nvif: fix a number of notify thinkos

1 files changed, 11 insertions, 3 deletions

diff --git a/drivers/gpu/drm/nouveau/core/subdev/bar/base.c b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c
index 73b1ed2..8bcbdf3 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/bar/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c
@@ -99,8 +99,13 @@ nouveau_bar_alloc(struct nouveau_bar *bar, struct nouveau_object *parent,
 		  struct nouveau_mem *mem, struct nouveau_object **pobject)
 {
 	struct nouveau_object *engine = nv_object(bar);
-	return nouveau_object_ctor(parent, engine, &nouveau_barobj_oclass,
-				   mem, 0, pobject);
+	int ret = -ENOMEM;
+	if (bar->iomem) {
+		ret = nouveau_object_ctor(parent, engine,
+					  &nouveau_barobj_oclass,
+					  mem, 0, pobject);
+	}
+	return ret;
 }
 
 int
@@ -118,9 +123,12 @@ nouveau_bar_create_(struct nouveau_object *parent,
 	if (ret)
 		return ret;
 
-	if (nv_device_resource_len(device, 3) != 0)
+	if (nv_device_resource_len(device, 3) != 0) {
 		bar->iomem = ioremap(nv_device_resource_start(device, 3),
 				     nv_device_resource_len(device, 3));
+		if (!bar->iomem)
+			nv_warn(bar, "PRAMIN ioremap failed\n");
+	}
 
 	return 0;
 }