diff options
Diffstat (limited to 'drivers/char/drm/drm_bufs.c')
| -rw-r--r-- | drivers/char/drm/drm_bufs.c | 43 |
1 files changed, 17 insertions, 26 deletions
diff --git a/drivers/char/drm/drm_bufs.c b/drivers/char/drm/drm_bufs.c index c11345856ff..dac05787959 100644 --- a/drivers/char/drm/drm_bufs.c +++ b/drivers/char/drm/drm_bufs.c @@ -52,10 +52,8 @@ EXPORT_SYMBOL(drm_get_resource_len); static drm_map_list_t *drm_find_matching_map(drm_device_t *dev, drm_local_map_t *map) { - struct list_head *list; - - list_for_each(list, &dev->maplist->head) { - drm_map_list_t *entry = list_entry(list, drm_map_list_t, head); + drm_map_list_t *entry; + list_for_each_entry(entry, &dev->maplist, head) { if (entry->map && map->type == entry->map->type && ((entry->map->offset == map->offset) || (map->type == _DRM_SHM && map->flags==_DRM_CONTAINS_LOCK))) { @@ -237,14 +235,14 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset, * skipped and we double check that dev->agp->memory is * actually set as well as being invalid before EPERM'ing */ - for (entry = dev->agp->memory; entry; entry = entry->next) { + list_for_each_entry(entry, &dev->agp->memory, head) { if ((map->offset >= entry->bound) && (map->offset + map->size <= entry->bound + entry->pages * PAGE_SIZE)) { valid = 1; break; } } - if (dev->agp->memory && !valid) { + if (!list_empty(&dev->agp->memory) && !valid) { drm_free(map, sizeof(*map), DRM_MEM_MAPS); return -EPERM; } @@ -289,7 +287,7 @@ static int drm_addmap_core(drm_device_t * dev, unsigned int offset, list->map = map; mutex_lock(&dev->struct_mutex); - list_add(&list->head, &dev->maplist->head); + list_add(&list->head, &dev->maplist); /* Assign a 32-bit handle */ /* We do it here so that dev->struct_mutex protects the increment */ @@ -380,29 +378,24 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp, */ int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map) { - struct list_head *list; - drm_map_list_t *r_list = NULL; + drm_map_list_t *r_list = NULL, *list_t; drm_dma_handle_t dmah; + int found = 0; /* Find the list entry for the map and remove it */ - list_for_each(list, &dev->maplist->head) { - r_list = list_entry(list, drm_map_list_t, head); - + list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) { if (r_list->map == map) { - list_del(list); + list_del(&r_list->head); drm_ht_remove_key(&dev->map_hash, r_list->user_token >> PAGE_SHIFT); - drm_free(list, sizeof(*list), DRM_MEM_MAPS); + drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS); + found = 1; break; } } - /* List has wrapped around to the head pointer, or it's empty and we - * didn't find anything. - */ - if (list == (&dev->maplist->head)) { + if (!found) return -EINVAL; - } switch (map->type) { case _DRM_REGISTERS: @@ -460,7 +453,7 @@ int drm_rmmap_ioctl(struct inode *inode, struct file *filp, drm_device_t *dev = priv->head->dev; drm_map_t request; drm_local_map_t *map = NULL; - struct list_head *list; + drm_map_list_t *r_list; int ret; if (copy_from_user(&request, (drm_map_t __user *) arg, sizeof(request))) { @@ -468,9 +461,7 @@ int drm_rmmap_ioctl(struct inode *inode, struct file *filp, } mutex_lock(&dev->struct_mutex); - list_for_each(list, &dev->maplist->head) { - drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head); - + list_for_each_entry(r_list, &dev->maplist, head) { if (r_list->map && r_list->user_token == (unsigned long)request.handle && r_list->map->flags & _DRM_REMOVABLE) { @@ -482,7 +473,7 @@ int drm_rmmap_ioctl(struct inode *inode, struct file *filp, /* List has wrapped around to the head pointer, or its empty we didn't * find anything. */ - if (list == (&dev->maplist->head)) { + if (list_empty(&dev->maplist) || !map) { mutex_unlock(&dev->struct_mutex); return -EINVAL; } @@ -606,14 +597,14 @@ int drm_addbufs_agp(drm_device_t * dev, drm_buf_desc_t * request) /* Make sure buffers are located in AGP memory that we own */ valid = 0; - for (agp_entry = dev->agp->memory; agp_entry; agp_entry = agp_entry->next) { + list_for_each_entry(agp_entry, &dev->agp->memory, head) { if ((agp_offset >= agp_entry->bound) && (agp_offset + total * count <= agp_entry->bound + agp_entry->pages * PAGE_SIZE)) { valid = 1; break; } } - if (dev->agp->memory && !valid) { + if (!list_empty(&dev->agp->memory) && !valid) { DRM_DEBUG("zone invalid\n"); return -EINVAL; } |