drm: Remove drm_global.{c,h} v2

The content of drm_global.{c,h} is obsolete.

v2: rebase on dropping TTM functionality

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 1 insertions, 140 deletions

diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index bc6a16a3c36e..32a837b72765 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -11,7 +11,7 @@ drm-y       :=	drm_auth.o drm_bufs.o drm_cache.o \
                 drm_sysfs.o drm_hashtab.o drm_mm.o \
                 drm_crtc.o drm_fourcc.o drm_modes.o drm_edid.o \
                 drm_info.o drm_encoder_slave.o \
-                drm_trace_points.o drm_global.o drm_prime.o \
+                drm_trace_points.o drm_prime.o \
                 drm_rect.o drm_vma_manager.o drm_flip_work.o \
                 drm_modeset_lock.o drm_atomic.o drm_bridge.o \
                 drm_framebuffer.o drm_connector.o drm_blend.o \
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 36e8e9cbec52..fc29f46b7c32 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -975,14 +975,12 @@ static void drm_core_exit(void)
         drm_sysfs_destroy();
         idr_destroy(&drm_minors_idr);
         drm_connector_ida_destroy();
-        drm_global_release();
 }
 
 static int __init drm_core_init(void)
 {
         int ret;
 
-        drm_global_init();
         drm_connector_ida_init();
         idr_init(&drm_minors_idr);
 
diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c
deleted file mode 100644
index 5799e2782dd1..000000000000
--- a/drivers/gpu/drm/drm_global.c
+++ /dev/null
@@ -1,137 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0 OR MIT
-/**************************************************************************
- *
- * Copyright 2008-2009 VMware, Inc., Palo Alto, CA., USA
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
- * USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-/*
- * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
- */
-
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <drm/drm_global.h>
-
-struct drm_global_item {
-        struct mutex mutex;
-        void *object;
-        int refcount;
-};
-
-static struct drm_global_item glob[DRM_GLOBAL_NUM];
-
-void drm_global_init(void)
-{
-        int i;
-
-        for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
-                struct drm_global_item *item = &glob[i];
-                mutex_init(&item->mutex);
-                item->object = NULL;
-                item->refcount = 0;
-        }
-}
-
-void drm_global_release(void)
-{
-        int i;
-        for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
-                struct drm_global_item *item = &glob[i];
-                BUG_ON(item->object != NULL);
-                BUG_ON(item->refcount != 0);
-        }
-}
-
-/**
- * drm_global_item_ref - Initialize and acquire reference to memory
- * object
- * @ref: Object for initialization
- *
- * This initializes a memory object, allocating memory and calling the
- * .init() hook. Further calls will increase the reference count for
- * that item.
- *
- * Returns:
- * Zero on success, non-zero otherwise.
- */
-int drm_global_item_ref(struct drm_global_reference *ref)
-{
-        int ret = 0;
-        struct drm_global_item *item = &glob[ref->global_type];
-
-        mutex_lock(&item->mutex);
-        if (item->refcount == 0) {
-                ref->object = kzalloc(ref->size, GFP_KERNEL);
-                if (unlikely(ref->object == NULL)) {
-                        ret = -ENOMEM;
-                        goto error_unlock;
-                }
-                ret = ref->init(ref);
-                if (unlikely(ret != 0))
-                        goto error_free;
-
-                item->object = ref->object;
-        } else {
-                ref->object = item->object;
-        }
-
-        ++item->refcount;
-        mutex_unlock(&item->mutex);
-        return 0;
-
-error_free:
-        kfree(ref->object);
-        ref->object = NULL;
-error_unlock:
-        mutex_unlock(&item->mutex);
-        return ret;
-}
-EXPORT_SYMBOL(drm_global_item_ref);
-
-/**
- * drm_global_item_unref - Drop reference to memory
- * object
- * @ref: Object being removed
- *
- * Drop a reference to the memory object and eventually call the
- * release() hook.  The allocated object should be dropped in the
- * release() hook or before calling this function
- *
- */
-
-void drm_global_item_unref(struct drm_global_reference *ref)
-{
-        struct drm_global_item *item = &glob[ref->global_type];
-
-        mutex_lock(&item->mutex);
-        BUG_ON(item->refcount == 0);
-        BUG_ON(ref->object != item->object);
-        if (--item->refcount == 0) {
-                ref->release(ref);
-                item->object = NULL;
-        }
-        mutex_unlock(&item->mutex);
-}
-EXPORT_SYMBOL(drm_global_item_unref);
-