wd_util: consider sw has no hw ctx and op type

sw and hw will share common resources like ctxs and pool.
So handle cases only sw exist, without ctx and op

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>

wd_util.c

@@ -224,12 +224,6 @@ int wd_init_ctx_config(struct wd_ctx_config_internal *in,
 	}
 
 	for (i = 0; i < cfg->ctx_num; i++) {
-		if (!cfg->ctxs[i].ctx) {
-			WD_ERR("invalid: ctx is NULL!\n");
-			ret = -WD_EINVAL;
-			goto err_out;
-		}
-
 		clone_ctx_to_internal(cfg->ctxs + i, ctxs + i);
 		ret = pthread_spin_init(&ctxs[i].lock, PTHREAD_PROCESS_SHARED);
 		if (ret) {
@@ -1153,17 +1147,21 @@ static int wd_get_wd_ctx(struct wd_env_config_per_numa *config,
 	return 0;
 
 free_ctx:
-	for (j = start; j < i; j++)
-		wd_release_ctx(ctx_config->ctxs[j].ctx);
+	for (j = start; j < i; j++) {
+		if (ctx_config->ctxs[j].ctx)
+			wd_release_ctx(ctx_config->ctxs[j].ctx);
+	}
 	return ret;
 }
 
 static void wd_put_wd_ctx(struct wd_ctx_config *ctx_config, __u32 ctx_num)
 {
 	__u32 i;
 
-	for (i = 0; i < ctx_num; i++)
-		wd_release_ctx(ctx_config->ctxs[i].ctx);
+	for (i = 0; i < ctx_num; i++) {
+		if (ctx_config->ctxs[i].ctx)
+			wd_release_ctx(ctx_config->ctxs[i].ctx);
+	}
 }
 
 static int wd_alloc_ctx(struct wd_env_config *config)
@@ -2147,7 +2145,14 @@ int wd_ctx_param_init(struct wd_ctx_params *ctx_params,
 		numa_free_nodemask(ctx_params->bmp);
 		return -WD_EAGAIN;
 	}
-
+	if (ctx_params->op_type_num == 0) {
+		/* set default */
+		ctx_params->op_type_num = 1;
+		if (ctx_params->ctx_set_num) {
+			ctx_params->ctx_set_num[0].sync_ctx_num = 1;
+			ctx_params->ctx_set_num[0].async_ctx_num = 1;
+		}
+	}
 	return 0;
 }
 
@@ -2452,12 +2457,6 @@ static int wd_init_ctx_set(struct wd_init_attrs *attrs, struct uacce_dev_list *l
 			/* self-decrease i to eliminate self-increase on next loop */
 			i--;
 			continue;
-		} else if (!ctx_config->ctxs[i].ctx) {
-			/*
-			 * wd_release_ctx_set will release ctx in
-			 * caller wd_init_ctx_and_sched.
-			 */
-			return -WD_ENOMEM;
 		}
 		ctx_config->ctxs[i].op_type = op_type;
 		ctx_config->ctxs[i].ctx_mode =