From: Xiao Wang <xiao.w.wang@intel.com>
Date: Thu, 17 May 2018 07:35:25 +0000 (+0800)
Subject: net/virtio-user: fix device init in legacy-mem mode
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=88e5469ff800fed3462721769894cc13b248d417;p=dpdk.git

net/virtio-user: fix device init in legacy-mem mode

In legacy-mem mode, memory event callback registering is not supported,
we should not return error in dev_init on this case.

Fixes: 12ecb2f63b12 ("net/virtio-user: support memory hotplug")

Suggested-by: Tiwei Bie <tiwei.bie@intel.com>
Signed-off-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index aff01f5870..4322527f20 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -447,8 +447,11 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
 
 	if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME,
 				virtio_user_mem_event_cb, dev)) {
-		PMD_INIT_LOG(ERR, "Failed to register mem event callback\n");
-		return -1;
+		if (rte_errno != ENOTSUP) {
+			PMD_INIT_LOG(ERR, "Failed to register mem event"
+					" callback\n");
+			return -1;
+		}
 	}
 
 	return 0;