wd_util: consider sw has no dev, no hw ctx or op

sw and hw will share common resources like ctxs and pool.
sw may works on platform no accerator dev, or has dev but
no ctx, or sw driver has no op.
Ignore these error as normal cases.

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

Author: zhangfeigao

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;
 }
 
@@ -2433,9 +2438,10 @@ static int wd_init_ctx_set(struct wd_init_attrs *attrs, struct uacce_dev_list *l
 	if (!ctx_set_num)
 		return 0;
 
+	/* sw share common resources, so dev is NULL is treated as error */
 	dev = wd_find_dev_by_numa(list, numa_id);
 	if (WD_IS_ERR(dev))
-		return WD_PTR_ERR(dev);
+		return 0;
 
 	for (i = idx; i < count; i++) {
 		ctx_config->ctxs[i].ctx = wd_request_ctx(dev);
@@ -2452,12 +2458,6 @@ 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 =
@@ -2557,9 +2557,20 @@ static int wd_alg_ctx_init(struct wd_init_attrs *attrs)
 	int numa_cnt, ret;
 
 	list = wd_get_accel_list(attrs->alg);
-	if (!list) {
-		WD_ERR("failed to get devices!\n");
-		return -WD_ENODEV;
+	if (list) {
+		/*
+		 * Not every numa has a device. Therefore, the first thing is to
+		 * filter the devices in the selected numa node, and the second
+		 * thing is to obtain the distribution of devices.
+		 */
+		used_list = wd_get_usable_list(list, used_bmp);
+		if (WD_IS_ERR(used_list)) {
+			ret = WD_PTR_ERR(used_list);
+			WD_ERR("failed to get usable devices(%d)!\n", ret);
+			goto out_freelist;
+		}
+
+		wd_init_device_nodemask(used_list, used_bmp);
 	}
 
 	op_type_num = ctx_params->op_type_num;
@@ -2571,20 +2582,6 @@ static int wd_alg_ctx_init(struct wd_init_attrs *attrs)
 		goto out_freelist;
 	}
 
-	/*
-	 * Not every numa has a device. Therefore, the first thing is to
-	 * filter the devices in the selected numa node, and the second
-	 * thing is to obtain the distribution of devices.
-	 */
-	used_list = wd_get_usable_list(list, used_bmp);
-	if (WD_IS_ERR(used_list)) {
-		ret = WD_PTR_ERR(used_list);
-		WD_ERR("failed to get usable devices(%d)!\n", ret);
-		goto out_freelist;
-	}
-
-	wd_init_device_nodemask(used_list, used_bmp);
-
 	numa_cnt = numa_bitmask_weight(used_bmp);
 	if (!numa_cnt) {
 		ret = numa_cnt;