[PATCH v3] net/vmxnet3: fix return code in initializing

[Kaijun Zeng]

Improve error handling

Bugzilla ID: 1239
Fixes: dfaff37fc46d ("vmxnet3: import new vmxnet3 poll mode driver 
implementation")
Cc: sta...@dpdk.org

Signed-off-by: Kaijun Zeng <corez...@gmail.com>
---
v3:
* Improve coding style

v2:
* Improve error handling
---
 drivers/net/vmxnet3/vmxnet3_rxtx.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/drivers/net/vmxnet3/vmxnet3_rxtx.c 
b/drivers/net/vmxnet3/vmxnet3_rxtx.c
index a875ffec07..e6e36dca93 100644
--- a/drivers/net/vmxnet3/vmxnet3_rxtx.c
+++ b/drivers/net/vmxnet3/vmxnet3_rxtx.c
@@ -1311,11 +1311,18 @@ vmxnet3_dev_rxtx_init(struct rte_eth_dev *dev)
                for (j = 0; j < VMXNET3_RX_CMDRING_SIZE; j++) {
                        /* Passing 0 as alloc_num will allocate full ring */
                        ret = vmxnet3_post_rx_bufs(rxq, j);
-                       if (ret <= 0) {
+
+                       /* Zero number of descriptors in the configuration of 
the RX queue */
+                       if (ret == 0) {
                                PMD_INIT_LOG(ERR,
-                                            "ERROR: Posting Rxq: %d buffers 
ring: %d",
-                                            i, j);
-                               return -ret;
+                                       "Invalid configuration in Rx queue: %d, 
buffers ring: %d\n",
+                                       i, j);
+                               return -EINVAL;
+                       }
+                       /* Return the error number */
+                       if (ret < 0) {
+                               PMD_INIT_LOG(ERR, "Posting Rxq: %d buffers 
ring: %d", i, j);
+                               return ret;
                        }
                        /*
                         * Updating device with the index:next2fill to fill the
-- 
2.30.2