optee: remove registered shm argument size check

We don't need to return error if output shm size is larger than allocated buffer. This is pefrectly fine. In this way TEE or TA reports that it needs larger buffer (as described in TEE Client API Specification v1.0, section 3.2.5.). Signed-off-by: Volodymyr Babchuk <[email protected]> Tested-by: Jerome Forissier <[email protected]> (HiKey) Reviewed-by: Joakim Bech <[email protected]>
linaro-swg · Oct 27, 2017 · 7e7a654 · 7e7a654
1 parent c7f82a0
commit 7e7a654
Showing 1 changed file with 0 additions and 8 deletions.
diff --git a/drivers/tee/optee/core.c b/drivers/tee/optee/core.c
@@ -116,14 +116,6 @@ int optee_from_msg_param(struct tee_param *params, size_t num_params,
 			p->u.memref.shm_offs = mp->u.rmem.offs;
 			p->u.memref.shm = shm;
 
-			/* Check that the memref is covered by the shm object */
-			if (p->u.memref.size) {
-				size_t o = p->u.memref.shm_offs +
-					   p->u.memref.size;
-
-				if (o > tee_shm_get_size(shm))
-					return -EINVAL;
-			}
 			break;
 
 		default: