[linux-next:master 776/12662] drivers/gpu/drm/drm_gpuvm.c:1321 drm_gpuvm_exec_lock_range() error: uninitialized symbol 'ret'.

[linux-next:master 776/12662] drivers/gpu/drm/drm_gpuvm.c:1321 drm_gpuvm_exec_lock_range() error: uninitialized symbol 'ret'.

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Danilo Krummrich <dakr@redhat.com>
CC: Boris Brezillon <bbrezillon@kernel.org>
CC: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e2425464bc87159274879ab30f9d4fe624b9fcd2
commit: 50c1a36f594bb3dd33f3f9386c5d960cd12327d8 [776/12662] drm/gpuvm: track/lock/validate external/evicted objects
:::::: branch date: 28 hours ago
:::::: commit date: 8 weeks ago
config: i386-randconfig-141-20231115 (https://download.01.org/0day-ci/archive/20240106/202401061927.fCkU4eLk-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202401061927.fCkU4eLk-lkp@intel.com/

smatch warnings:
drivers/gpu/drm/drm_gpuvm.c:1321 drm_gpuvm_exec_lock_range() error: uninitialized symbol 'ret'.

vim +/ret +1321 drivers/gpu/drm/drm_gpuvm.c

50c1a36f594bb3 Danilo Krummrich 2023-11-08  1291  
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1292  /**
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1293   * drm_gpuvm_exec_lock_range() - prepare all BOs mapped within a given range
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1294   * @vm_exec: the &drm_gpuvm_exec wrapper
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1295   * @addr: the start address within the VA space
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1296   * @range: the range to iterate within the VA space
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1297   *
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1298   * Acquires all dma-resv locks of all &drm_gem_objects mapped between @addr and
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1299   * @addr + @range.
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1300   *
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1301   * Returns: 0 on success, negative error code on failure.
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1302   */
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1303  int
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1304  drm_gpuvm_exec_lock_range(struct drm_gpuvm_exec *vm_exec,
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1305  			  u64 addr, u64 range)
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1306  {
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1307  	struct drm_gpuvm *gpuvm = vm_exec->vm;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1308  	struct drm_exec *exec = &vm_exec->exec;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1309  	int ret;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1310  
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1311  	drm_exec_init(exec, vm_exec->flags);
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1312  
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1313  	drm_exec_until_all_locked(exec) {
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1314  		ret = drm_gpuvm_prepare_range(gpuvm, exec, addr, range,
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1315  					      vm_exec->num_fences);
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1316  		drm_exec_retry_on_contention(exec);
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1317  		if (ret)
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1318  			goto err;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1319  	}
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1320  
50c1a36f594bb3 Danilo Krummrich 2023-11-08 @1321  	return ret;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1322  
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1323  err:
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1324  	drm_exec_fini(exec);
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1325  	return ret;
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1326  }
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1327  EXPORT_SYMBOL_GPL(drm_gpuvm_exec_lock_range);
50c1a36f594bb3 Danilo Krummrich 2023-11-08  1328  

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