[dpdk-dev] [PATCH v2 3/4] virtio: return 1 to tell the upper layer we don't take over this device

[Huawei Xie]

v2 changes:
 Remove unnecessary assignment of NULL to dev->data->mac_addrs
 Ajust one comment's position

if virtio_resource_init fails, cleanup the resource and return 1 to
tell the upper layer we don't take over this device.
return -1 means error and DPDK will exit.

Signed-off-by: Huawei Xie <huawei.xie at intel.com>
---
 drivers/net/virtio/virtio_ethdev.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio/virtio_ethdev.c 
b/drivers/net/virtio/virtio_ethdev.c
index d928339..e815acd 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1287,8 +1287,13 @@ eth_virtio_dev_init(struct rte_eth_dev *eth_dev)

        pci_dev = eth_dev->pci_dev;

-       if (virtio_resource_init(pci_dev) < 0)
-               return -1;
+       if (virtio_resource_init(pci_dev) < 0) {
+               rte_free(eth_dev->data->mac_addrs);
+               /* Return 1 to tell the upper layer we don't take over
+                * this device.
+                */
+               return 1;
+       }

        hw->use_msix = virtio_has_msix(&pci_dev->addr);
        hw->io_base = (uint32_t)(uintptr_t)pci_dev->mem_resource[0].addr;
-- 
1.8.1.4