[dpdk-dev] [PATCH] net/virtio-user: fix dev_init in legacy-mem mode

[Xiao Wang]

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")

Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
Suggested-by: Tiwei Bie <tiwei.bie at intel.com>
---
 drivers/net/virtio/virtio_user/virtio_user_dev.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 992a68757..bd16fbb60 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -445,8 +445,11 @@ 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;
-- 
2.15.1