Re: [PATCH v4 5/6] optee: FF-A: dynamic restricted memory allocation

[kernel test robot <lkp@intel.com>]

Hi Jens,

kernel test robot noticed the following build errors:

[auto build test ERROR on fac04efc5c793dccbd07e2d59af9f90b7fc0dca4]

url:    https://github.com/intel-lab-lkp/linux/commits/Jens-Wiklander/tee-add-restricted-memory-allocation/20241217-181101
base:   fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
patch link:    https://lore.kernel.org/r/20241217100809.3962439-6-jens.wiklander%40linaro.org
patch subject: [PATCH v4 5/6] optee: FF-A: dynamic restricted memory allocation
config: arm64-randconfig-r112-20241221 (https://download.01.org/0day-ci/archive/20241221/202412211952.LOCC8Lbo-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20241221/202412211952.LOCC8Lbo-lkp@intel.com/reproduce)

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>
| Closes: https://lore.kernel.org/oe-kbuild-all/202412211952.LOCC8Lbo-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/tee/optee/rstmem.c:311:67: error: expected ';', ',' or ')' before '__unused'
     311 | static struct tee_shm_pool *alloc_rstmem_pool(struct optee *optee __unused,
         |                                                                   ^~~~~~~~
   drivers/tee/optee/rstmem.c: In function 'optee_rstmem_alloc':
>> drivers/tee/optee/rstmem.c:332:24: error: implicit declaration of function 'alloc_rstmem_pool' [-Wimplicit-function-declaration]
     332 |                 pool = alloc_rstmem_pool(optee, use_case);
         |                        ^~~~~~~~~~~~~~~~~
>> drivers/tee/optee/rstmem.c:332:22: error: assignment to 'struct tee_shm_pool *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
     332 |                 pool = alloc_rstmem_pool(optee, use_case);
         |                      ^


vim +311 drivers/tee/optee/rstmem.c

   268	
   269	static struct tee_shm_pool *alloc_rstmem_pool(struct optee *optee, u32 use_case)
   270	{
   271		struct optee_rstmem_cma_pool *rp;
   272		size_t min_size;
   273		int rc;
   274	
   275		rp = kzalloc(sizeof(*rp), GFP_KERNEL);
   276		if (!rp)
   277			return ERR_PTR(-ENOMEM);
   278		rp->rstmem.use_case = use_case;
   279	
   280		rc = get_rstmem_config(optee, use_case, &min_size, &rp->align, NULL,
   281				       &rp->end_point_count);
   282		if (rc) {
   283			if (rc != -ENOSPC)
   284				goto err;
   285			rp->end_points = kcalloc(rp->end_point_count,
   286						 sizeof(*rp->end_points), GFP_KERNEL);
   287			if (!rp->end_points) {
   288				rc = -ENOMEM;
   289				goto err;
   290			}
   291			rc = get_rstmem_config(optee, use_case, &min_size, &rp->align,
   292					       rp->end_points, &rp->end_point_count);
   293			if (rc)
   294				goto err_kfree_eps;
   295		}
   296	
   297		rp->pool.ops = &rstmem_pool_ops_cma;
   298		rp->optee = optee;
   299		rp->page_count = min_size / PAGE_SIZE;
   300		mutex_init(&rp->mutex);
   301	
   302		return &rp->pool;
   303	
   304	err_kfree_eps:
   305		kfree(rp->end_points);
   306	err:
   307		kfree(rp);
   308		return ERR_PTR(rc);
   309	}
   310	#else /*CONFIG_CMA*/
 > 311	static struct tee_shm_pool *alloc_rstmem_pool(struct optee *optee __unused,
   312						      u32 use_case __unused)
   313	{
   314		return ERR_PTR(-EINVAL);
   315	}
   316	#endif /*CONFIG_CMA*/
   317	
   318	int optee_rstmem_alloc(struct tee_context *ctx, struct tee_shm *shm,
   319			       u32 flags, u32 use_case, size_t size)
   320	{
   321		struct optee *optee = tee_get_drvdata(ctx->teedev);
   322		struct tee_shm_pool *pool;
   323		int rc;
   324	
   325		if (!optee->rstmem_pools)
   326			return -EINVAL;
   327		if (flags)
   328			return -EINVAL;
   329	
   330		pool = xa_load(&optee->rstmem_pools->xa, use_case);
   331		if (!pool) {
 > 332			pool = alloc_rstmem_pool(optee, use_case);
   333			if (IS_ERR(pool))
   334				return PTR_ERR(pool);
   335			rc = xa_insert(&optee->rstmem_pools->xa, use_case, pool,
   336				       GFP_KERNEL);
   337			if (rc) {
   338				pool->ops->destroy_pool(pool);
   339				return rc;
   340			}
   341		}
   342	
   343		return pool->ops->alloc(pool, shm, size, 0);
   344	}
   345	

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