Merge tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here's the big driver-core pull request for 3.17-rc1.

  Largest thing in here is the dma-buf rework and fence code, that
  touched many different subsystems so it was agreed it should go
  through this tree to handle merge issues.  There's also some firmware
  loading updates, as well as tests added, and a few other tiny changes,
  the changelog has the details.

  All have been in linux-next for a long time"

* tag 'driver-core-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits)
  ARM: imx: Remove references to platform_bus in mxc code
  firmware loader: Fix _request_firmware_load() return val for fw load abort
  platform: Remove most references to platform_bus device
  test: add firmware_class loader test
  doc: fix minor typos in firmware_class README
  staging: android: Cleanup style issues
  Documentation: devres: Sort managed interfaces
  Documentation: devres: Add devm_kmalloc() et al
  fs: debugfs: remove trailing whitespace
  kernfs: kernel-doc warning fix
  debugfs: Fix corrupted loop in debugfs_remove_recursive
  stable_kernel_rules: Add pointer to netdev-FAQ for network patches
  driver core: platform: add device binding path 'driver_override'
  driver core/platform: remove unused implicit padding in platform_object
  firmware loader: inform direct failure when udev loader is disabled
  firmware: replace ALIGN(PAGE_SIZE) by PAGE_ALIGN
  firmware: read firmware size using i_size_read()
  firmware loader: allow disabling of udev as firmware loader
  reservation: add suppport for read-only access using rcu
  reservation: update api and add some helpers
  ...

Conflicts:
	drivers/base/platform.c

13 files changed, 36 insertions, 12 deletions

diff --git a/drivers/gpu/drm/armada/armada_crtc.c b/drivers/gpu/drm/armada/armada_crtc.c
index 81c34f949dfc..3aedf9e993e6 100644
--- a/drivers/gpu/drm/armada/armada_crtc.c
+++ b/drivers/gpu/drm/armada/armada_crtc.c
@@ -1039,11 +1039,9 @@ int armada_drm_crtc_create(struct drm_device *dev, unsigned num,
 	if (ret)
 		return ret;
 
-	base = devm_request_and_ioremap(dev->dev, res);
-	if (!base) {
-		DRM_ERROR("failed to ioremap register\n");
-		return -ENOMEM;
-	}
+	base = devm_ioremap_resource(dev->dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
 
 	dcrtc = kzalloc(sizeof(*dcrtc), GFP_KERNEL);
 	if (!dcrtc) {
diff --git a/drivers/gpu/drm/armada/armada_gem.c b/drivers/gpu/drm/armada/armada_gem.c
index bb9b642d8485..7496f55611a5 100644
--- a/drivers/gpu/drm/armada/armada_gem.c
+++ b/drivers/gpu/drm/armada/armada_gem.c
@@ -539,7 +539,7 @@ armada_gem_prime_export(struct drm_device *dev, struct drm_gem_object *obj,
 	int flags)
 {
 	return dma_buf_export(obj, &armada_gem_prime_dmabuf_ops, obj->size,
-			      O_RDWR);
+			      O_RDWR, NULL);
 }
 
 struct drm_gem_object *
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 304ca8cacbc4..99d578bad17e 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -336,7 +336,13 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops =  {
 struct dma_buf *drm_gem_prime_export(struct drm_device *dev,
 				     struct drm_gem_object *obj, int flags)
 {
-	return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size, flags);
+	struct reservation_object *robj = NULL;
+
+	if (dev->driver->gem_prime_res_obj)
+		robj = dev->driver->gem_prime_res_obj(obj);
+
+	return dma_buf_export(obj, &drm_gem_prime_dmabuf_ops, obj->size,
+			      flags, robj);
 }
 EXPORT_SYMBOL(drm_gem_prime_export);
 
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
index 2a3ad24276f8..60192ed544f0 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dmabuf.c
@@ -187,7 +187,7 @@ struct dma_buf *exynos_dmabuf_prime_export(struct drm_device *drm_dev,
 	struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj);
 
 	return dma_buf_export(obj, &exynos_dmabuf_ops,
-				exynos_gem_obj->base.size, flags);
+				exynos_gem_obj->base.size, flags, NULL);
 }
 
 struct drm_gem_object *exynos_dmabuf_prime_import(struct drm_device *drm_dev,
diff --git a/drivers/gpu/drm/i915/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
index 580aa42443ed..82a1f4b57778 100644
--- a/drivers/gpu/drm/i915/i915_gem_dmabuf.c
+++ b/drivers/gpu/drm/i915/i915_gem_dmabuf.c
@@ -237,7 +237,8 @@ struct dma_buf *i915_gem_prime_export(struct drm_device *dev,
 			return ERR_PTR(ret);
 	}
 
-	return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags);
+	return dma_buf_export(gem_obj, &i915_dmabuf_ops, gem_obj->size, flags,
+			      NULL);
 }
 
 static int i915_gem_object_get_pages_dmabuf(struct drm_i915_gem_object *obj)
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 5425ffe3931d..c9428c943afb 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -845,6 +845,7 @@ driver = {
 	.gem_prime_export = drm_gem_prime_export,
 	.gem_prime_import = drm_gem_prime_import,
 	.gem_prime_pin = nouveau_gem_prime_pin,
+	.gem_prime_res_obj = nouveau_gem_prime_res_obj,
 	.gem_prime_unpin = nouveau_gem_prime_unpin,
 	.gem_prime_get_sg_table = nouveau_gem_prime_get_sg_table,
 	.gem_prime_import_sg_table = nouveau_gem_prime_import_sg_table,
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.h b/drivers/gpu/drm/nouveau/nouveau_gem.h
index 7caca057bc38..ddab762d81fe 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.h
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.h
@@ -35,6 +35,7 @@ extern int nouveau_gem_ioctl_info(struct drm_device *, void *,
 				  struct drm_file *);
 
 extern int nouveau_gem_prime_pin(struct drm_gem_object *);
+struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *);
 extern void nouveau_gem_prime_unpin(struct drm_gem_object *);
 extern struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *);
 extern struct drm_gem_object *nouveau_gem_prime_import_sg_table(
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index 51a2cb102b44..1f51008e4d26 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -102,3 +102,10 @@ void nouveau_gem_prime_unpin(struct drm_gem_object *obj)
 
 	nouveau_bo_unpin(nvbo);
 }
+
+struct reservation_object *nouveau_gem_prime_res_obj(struct drm_gem_object *obj)
+{
+	struct nouveau_bo *nvbo = nouveau_gem_object(obj);
+
+	return nvbo->bo.resv;
+}
diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
index 4fcca8d42796..a2dbfb1737b4 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
@@ -171,7 +171,7 @@ static struct dma_buf_ops omap_dmabuf_ops = {
 struct dma_buf *omap_gem_prime_export(struct drm_device *dev,
 		struct drm_gem_object *obj, int flags)
 {
-	return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags);
+	return dma_buf_export(obj, &omap_dmabuf_ops, obj->size, flags, NULL);
 }
 
 struct drm_gem_object *omap_gem_prime_import(struct drm_device *dev,
diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
index e9e361084249..959f0866d993 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.c
+++ b/drivers/gpu/drm/radeon/radeon_drv.c
@@ -132,6 +132,7 @@ struct drm_gem_object *radeon_gem_prime_import_sg_table(struct drm_device *dev,
 							struct sg_table *sg);
 int radeon_gem_prime_pin(struct drm_gem_object *obj);
 void radeon_gem_prime_unpin(struct drm_gem_object *obj);
+struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *);
 void *radeon_gem_prime_vmap(struct drm_gem_object *obj);
 void radeon_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr);
 extern long radeon_kms_compat_ioctl(struct file *filp, unsigned int cmd,
@@ -566,6 +567,7 @@ static struct drm_driver kms_driver = {
 	.gem_prime_import = drm_gem_prime_import,
 	.gem_prime_pin = radeon_gem_prime_pin,
 	.gem_prime_unpin = radeon_gem_prime_unpin,
+	.gem_prime_res_obj = radeon_gem_prime_res_obj,
 	.gem_prime_get_sg_table = radeon_gem_prime_get_sg_table,
 	.gem_prime_import_sg_table = radeon_gem_prime_import_sg_table,
 	.gem_prime_vmap = radeon_gem_prime_vmap,
diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c
index 20074560fc25..28d71070c389 100644
--- a/drivers/gpu/drm/radeon/radeon_prime.c
+++ b/drivers/gpu/drm/radeon/radeon_prime.c
@@ -103,3 +103,11 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj)
 	radeon_bo_unpin(bo);
 	radeon_bo_unreserve(bo);
 }
+
+
+struct reservation_object *radeon_gem_prime_res_obj(struct drm_gem_object *obj)
+{
+	struct radeon_bo *bo = gem_to_radeon_bo(obj);
+
+	return bo->tbo.resv;
+}
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c
index aa85b7b26f10..78cc8143760a 100644
--- a/drivers/gpu/drm/tegra/gem.c
+++ b/drivers/gpu/drm/tegra/gem.c
@@ -420,7 +420,7 @@ struct dma_buf *tegra_gem_prime_export(struct drm_device *drm,
 				       int flags)
 {
 	return dma_buf_export(gem, &tegra_gem_prime_dmabuf_ops, gem->size,
-			      flags);
+			      flags, NULL);
 }
 
 struct drm_gem_object *tegra_gem_prime_import(struct drm_device *drm,
diff --git a/drivers/gpu/drm/ttm/ttm_object.c b/drivers/gpu/drm/ttm/ttm_object.c
index d2a053352789..12c87110db3a 100644
--- a/drivers/gpu/drm/ttm/ttm_object.c
+++ b/drivers/gpu/drm/ttm/ttm_object.c
@@ -695,7 +695,7 @@ int ttm_prime_handle_to_fd(struct ttm_object_file *tfile,
 		}
 
 		dma_buf = dma_buf_export(prime, &tdev->ops,
-					 prime->size, flags);
+					 prime->size, flags, NULL);
 		if (IS_ERR(dma_buf)) {
 			ret = PTR_ERR(dma_buf);
 			ttm_mem_global_free(tdev->mem_glob,