diff options
| -rw-r--r-- | drivers/char/drm/drm_bufs.c | 64 |
1 files changed, 32 insertions, 32 deletions
diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c index e0743ebbe4b..8eff0736a94 100644 --- a/drivers/char/drm/drm_bufs.c +++ b/drivers/char/drm/drm_bufs.c @@ -48,8 +48,8 @@ unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource) } EXPORT_SYMBOL(drm_get_resource_len); -static drm_local_map_t *drm_find_matching_map(drm_device_t *dev, - drm_local_map_t *map) +static drm_map_list_t *drm_find_matching_map(drm_device_t *dev, + drm_local_map_t *map) { struct list_head *list; @@ -57,7 +57,7 @@ static drm_local_map_t *drm_find_matching_map(drm_device_t *dev, drm_map_list_t *entry = list_entry(list, drm_map_list_t, head); if (entry->map && map->type == entry->map->type && entry->map->offset == map->offset) { - return entry->map; + return entry; } } @@ -114,14 +114,13 @@ static __inline__ unsigned int HandleID(unsigned long lhandle, drm_device_t *dev * type. Adds the map to the map list drm_device::maplist. Adds MTRR's where * applicable and if supported by the kernel. */ -int drm_addmap(drm_device_t * dev, unsigned int offset, - unsigned int size, drm_map_type_t type, - drm_map_flags_t flags, drm_local_map_t ** map_ptr) +int drm_addmap_core(drm_device_t * dev, unsigned int offset, + unsigned int size, drm_map_type_t type, + drm_map_flags_t flags, drm_map_list_t **maplist) { drm_map_t *map; drm_map_list_t *list; drm_dma_handle_t *dmah; - drm_local_map_t *found_map; map = drm_alloc( sizeof(*map), DRM_MEM_MAPS ); if ( !map ) @@ -166,17 +165,17 @@ int drm_addmap(drm_device_t * dev, unsigned int offset, * needing to be aware of it. Therefore, we just return success * when the server tries to create a duplicate map. */ - found_map = drm_find_matching_map(dev, map); - if (found_map != NULL) { - if (found_map->size != map->size) { + list = drm_find_matching_map(dev, map); + if (list != NULL) { + if (list->map->size != map->size) { DRM_DEBUG("Matching maps of type %d with " "mismatched sizes, (%ld vs %ld)\n", - map->type, map->size, found_map->size); - found_map->size = map->size; + map->type, map->size, list->map->size); + list->map->size = map->size; } drm_free(map, sizeof(*map), DRM_MEM_MAPS); - *map_ptr = found_map; + *maplist = list; return 0; } @@ -264,9 +263,22 @@ int drm_addmap(drm_device_t * dev, unsigned int offset, : map->offset, dev); up(&dev->struct_sem); - *map_ptr = map; + *maplist = list; return 0; } + +int drm_addmap(drm_device_t *dev, unsigned int offset, + unsigned int size, drm_map_type_t type, + drm_map_flags_t flags, drm_local_map_t **map_ptr) +{ + drm_map_list_t *list; + int rc; + + rc = drm_addmap_core(dev, offset, size, type, flags, &list); + if (!rc) + *map_ptr = list->map; + return rc; +} EXPORT_SYMBOL(drm_addmap); int drm_addmap_ioctl(struct inode *inode, struct file *filp, @@ -275,10 +287,9 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp, drm_file_t *priv = filp->private_data; drm_device_t *dev = priv->head->dev; drm_map_t map; - drm_map_t *map_ptr; + drm_map_list_t *maplist; drm_map_t __user *argp = (void __user *)arg; int err; - unsigned long handle = 0; if (!(filp->f_mode & 3)) return -EACCES; /* Require read/write */ @@ -287,26 +298,15 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp, return -EFAULT; } - err = drm_addmap(dev, map.offset, map.size, map.type, map.flags, - &map_ptr); + err = drm_addmap_core(dev, map.offset, map.size, map.type, map.flags, + &maplist); - if (err) { + if (err) return err; - } - - { - drm_map_list_t *_entry; - list_for_each_entry(_entry, &dev->maplist->head, head) { - if (_entry->map == map_ptr) - handle = _entry->user_token; - } - if (!handle) - return -EFAULT; - } - if (copy_to_user(argp, map_ptr, sizeof(*map_ptr))) + if (copy_to_user(argp, maplist->map, sizeof(drm_map_t))) return -EFAULT; - if (put_user(handle, &argp->handle)) + if (put_user(maplist->user_token, &argp->handle)) return -EFAULT; return 0; } |