mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 02:54:32 +08:00
a58df0ade9
It fixes W=1 warnings: drivers/gpu/drm/gma500/gem_glue.c:23:6: warning: no previous prototype for ‘drm_gem_object_release_wrap’ [-Wmissing-prototypes] drivers/gpu/drm/gma500/gem_glue.c:44:5: warning: no previous prototype for ‘gem_create_mmap_offset’ [-Wmissing-prototypes] Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/**************************************************************************
|
|
* Copyright (c) 2011, Intel Corporation.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
**************************************************************************/
|
|
|
|
#include <drm/drmP.h>
|
|
#include <drm/drm.h>
|
|
#include "gem_glue.h"
|
|
|
|
void drm_gem_object_release_wrap(struct drm_gem_object *obj)
|
|
{
|
|
/* Remove the list map if one is present */
|
|
if (obj->map_list.map) {
|
|
struct drm_gem_mm *mm = obj->dev->mm_private;
|
|
struct drm_map_list *list = &obj->map_list;
|
|
drm_ht_remove_item(&mm->offset_hash, &list->hash);
|
|
drm_mm_put_block(list->file_offset_node);
|
|
kfree(list->map);
|
|
list->map = NULL;
|
|
}
|
|
drm_gem_object_release(obj);
|
|
}
|
|
|
|
/**
|
|
* gem_create_mmap_offset - invent an mmap offset
|
|
* @obj: our object
|
|
*
|
|
* Standard implementation of offset generation for mmap as is
|
|
* duplicated in several drivers. This belongs in GEM.
|
|
*/
|
|
int gem_create_mmap_offset(struct drm_gem_object *obj)
|
|
{
|
|
struct drm_device *dev = obj->dev;
|
|
struct drm_gem_mm *mm = dev->mm_private;
|
|
struct drm_map_list *list;
|
|
struct drm_local_map *map;
|
|
int ret;
|
|
|
|
list = &obj->map_list;
|
|
list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL);
|
|
if (list->map == NULL)
|
|
return -ENOMEM;
|
|
map = list->map;
|
|
map->type = _DRM_GEM;
|
|
map->size = obj->size;
|
|
map->handle = obj;
|
|
|
|
list->file_offset_node = drm_mm_search_free(&mm->offset_manager,
|
|
obj->size / PAGE_SIZE, 0, 0);
|
|
if (!list->file_offset_node) {
|
|
dev_err(dev->dev, "failed to allocate offset for bo %d\n",
|
|
obj->name);
|
|
ret = -ENOSPC;
|
|
goto free_it;
|
|
}
|
|
list->file_offset_node = drm_mm_get_block(list->file_offset_node,
|
|
obj->size / PAGE_SIZE, 0);
|
|
if (!list->file_offset_node) {
|
|
ret = -ENOMEM;
|
|
goto free_it;
|
|
}
|
|
list->hash.key = list->file_offset_node->start;
|
|
ret = drm_ht_insert_item(&mm->offset_hash, &list->hash);
|
|
if (ret) {
|
|
dev_err(dev->dev, "failed to add to map hash\n");
|
|
goto free_mm;
|
|
}
|
|
return 0;
|
|
|
|
free_mm:
|
|
drm_mm_put_block(list->file_offset_node);
|
|
free_it:
|
|
kfree(list->map);
|
|
list->map = NULL;
|
|
return ret;
|
|
}
|