227 lines
5.9 KiB
C
227 lines
5.9 KiB
C
/*
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* Copyright 2012 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include <core/object.h>
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#include <core/handle.h>
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#include <core/client.h>
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#define hprintk(h,l,f,a...) do { \
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struct nouveau_client *c = nouveau_client((h)->object); \
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struct nouveau_handle *p = (h)->parent; u32 n = p ? p->name : ~0; \
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nv_printk((c), l, "0x%08x:0x%08x "f, n, (h)->name, ##a); \
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} while(0)
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int
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nouveau_handle_init(struct nouveau_handle *handle)
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{
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struct nouveau_handle *item;
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int ret;
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hprintk(handle, TRACE, "init running\n");
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ret = nouveau_object_inc(handle->object);
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if (ret)
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return ret;
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hprintk(handle, TRACE, "init children\n");
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list_for_each_entry(item, &handle->tree, head) {
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ret = nouveau_handle_init(item);
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if (ret)
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goto fail;
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}
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hprintk(handle, TRACE, "init completed\n");
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return 0;
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fail:
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hprintk(handle, ERROR, "init failed with %d\n", ret);
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list_for_each_entry_continue_reverse(item, &handle->tree, head) {
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nouveau_handle_fini(item, false);
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}
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nouveau_object_dec(handle->object, false);
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return ret;
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}
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int
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nouveau_handle_fini(struct nouveau_handle *handle, bool suspend)
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{
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static char *name[2] = { "fini", "suspend" };
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struct nouveau_handle *item;
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int ret;
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hprintk(handle, TRACE, "%s children\n", name[suspend]);
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list_for_each_entry(item, &handle->tree, head) {
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ret = nouveau_handle_fini(item, suspend);
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if (ret && suspend)
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goto fail;
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}
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hprintk(handle, TRACE, "%s running\n", name[suspend]);
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if (handle->object) {
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ret = nouveau_object_dec(handle->object, suspend);
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if (ret && suspend)
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goto fail;
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}
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hprintk(handle, TRACE, "%s completed\n", name[suspend]);
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return 0;
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fail:
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hprintk(handle, ERROR, "%s failed with %d\n", name[suspend], ret);
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list_for_each_entry_continue_reverse(item, &handle->tree, head) {
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int rret = nouveau_handle_init(item);
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if (rret)
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hprintk(handle, FATAL, "failed to restart, %d\n", rret);
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}
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return ret;
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}
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int
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nouveau_handle_create(struct nouveau_object *parent, u32 _parent, u32 _handle,
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struct nouveau_object *object,
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struct nouveau_handle **phandle)
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{
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struct nouveau_object *namedb;
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struct nouveau_handle *handle;
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int ret;
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namedb = parent;
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while (!nv_iclass(namedb, NV_NAMEDB_CLASS))
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namedb = namedb->parent;
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handle = kzalloc(sizeof(*handle), GFP_KERNEL);
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if (!handle)
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return -ENOMEM;
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INIT_LIST_HEAD(&handle->head);
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INIT_LIST_HEAD(&handle->tree);
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handle->name = _handle;
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handle->priv = ~0;
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ret = nouveau_namedb_insert(nv_namedb(namedb), _handle, object, handle);
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if (ret) {
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kfree(handle);
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return ret;
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}
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if (nv_parent(parent)->object_attach) {
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ret = nv_parent(parent)->object_attach(parent, object, _handle);
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if (ret < 0) {
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nouveau_handle_destroy(handle);
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return ret;
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}
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handle->priv = ret;
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}
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if (object != namedb) {
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while (!nv_iclass(namedb, NV_CLIENT_CLASS))
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namedb = namedb->parent;
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handle->parent = nouveau_namedb_get(nv_namedb(namedb), _parent);
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if (handle->parent) {
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list_add(&handle->head, &handle->parent->tree);
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nouveau_namedb_put(handle->parent);
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}
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}
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hprintk(handle, TRACE, "created\n");
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*phandle = handle;
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return 0;
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}
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void
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nouveau_handle_destroy(struct nouveau_handle *handle)
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{
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struct nouveau_handle *item, *temp;
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hprintk(handle, TRACE, "destroy running\n");
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list_for_each_entry_safe(item, temp, &handle->tree, head) {
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nouveau_handle_destroy(item);
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}
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list_del(&handle->head);
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if (handle->priv != ~0) {
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struct nouveau_object *parent = handle->parent->object;
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nv_parent(parent)->object_detach(parent, handle->priv);
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}
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hprintk(handle, TRACE, "destroy completed\n");
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nouveau_namedb_remove(handle);
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kfree(handle);
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}
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struct nouveau_object *
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nouveau_handle_ref(struct nouveau_object *parent, u32 name)
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{
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struct nouveau_object *object = NULL;
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struct nouveau_handle *handle;
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while (!nv_iclass(parent, NV_NAMEDB_CLASS))
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parent = parent->parent;
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handle = nouveau_namedb_get(nv_namedb(parent), name);
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if (handle) {
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nouveau_object_ref(handle->object, &object);
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nouveau_namedb_put(handle);
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}
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return object;
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}
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struct nouveau_handle *
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nouveau_handle_get_class(struct nouveau_object *engctx, u16 oclass)
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{
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struct nouveau_namedb *namedb;
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if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
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return nouveau_namedb_get_class(namedb, oclass);
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return NULL;
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}
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struct nouveau_handle *
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nouveau_handle_get_vinst(struct nouveau_object *engctx, u64 vinst)
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{
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struct nouveau_namedb *namedb;
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if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
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return nouveau_namedb_get_vinst(namedb, vinst);
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return NULL;
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}
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struct nouveau_handle *
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nouveau_handle_get_cinst(struct nouveau_object *engctx, u32 cinst)
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{
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struct nouveau_namedb *namedb;
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if (engctx && (namedb = (void *)nv_pclass(engctx, NV_NAMEDB_CLASS)))
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return nouveau_namedb_get_cinst(namedb, cinst);
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return NULL;
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}
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void
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nouveau_handle_put(struct nouveau_handle *handle)
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{
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if (handle)
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nouveau_namedb_put(handle);
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}
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