[PATCH 3/4] net/netvsc: log error on failure to switch data path

[longli@linuxonhyperv.com]

From: Long Li <longli@microsoft.com>

There is no recovery code path if netvsc failed to switch data path.

Log an error in this case for troubleshooting.

Signed-off-by: Long Li <longli@microsoft.com>
---
 drivers/net/netvsc/hn_vf.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/netvsc/hn_vf.c b/drivers/net/netvsc/hn_vf.c
index 5d8058774d..4ff766ec8b 100644
--- a/drivers/net/netvsc/hn_vf.c
+++ b/drivers/net/netvsc/hn_vf.c
@@ -316,8 +316,9 @@ static void hn_vf_remove(struct hn_data *hv)
 	} else {
 		/* Stop incoming packets from arriving on VF */
 		ret = hn_nvs_set_datapath(hv, NVS_DATAPATH_SYNTHETIC);
-		if (ret == 0)
-			hv->vf_ctx.vf_vsc_switched = false;
+		if (ret)
+			PMD_DRV_LOG(ERR, "Failed to switch to synthetic");
+		hv->vf_ctx.vf_vsc_switched = false;
 	}
 	rte_rwlock_write_unlock(&hv->vf_lock);
 }
-- 
2.34.1