[dpdk-dev] [PATCH] ethdev: fix rte_eth_dev_owner_unset

[Stephen Hemminger <stephen@networkplumber.org>]

The rte_eth_dev_owner_unset function is unusable because
it always returns -EINVAL. This is because the magic (unowned)
value is flagged as not valid.

Move the validation of owner into set and unset as
separate calls.

Fixes: 5b7ba31148a8 ("ethdev: add port ownership")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/librte_ethdev/rte_ethdev.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c
index 4c320250589a..9398550a1189 100644
--- a/lib/librte_ethdev/rte_ethdev.c
+++ b/lib/librte_ethdev/rte_ethdev.c
@@ -443,10 +443,6 @@ _rte_eth_dev_owner_set(const uint16_t port_id, const uint64_t old_owner_id,
 		return -ENODEV;
 	}
 
-	if (!rte_eth_is_valid_owner_id(new_owner->id) &&
-	    !rte_eth_is_valid_owner_id(old_owner_id))
-		return -EINVAL;
-
 	port_owner = &rte_eth_devices[port_id].data->owner;
 	if (port_owner->id != old_owner_id) {
 		RTE_ETHDEV_LOG(ERR,
@@ -475,6 +471,9 @@ rte_eth_dev_owner_set(const uint16_t port_id,
 {
 	int ret;
 
+	if (!rte_eth_is_valid_owner_id(owner->id))
+		return -EINVAL;
+
 	rte_eth_dev_shared_data_prepare();
 
 	rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
@@ -492,6 +491,9 @@ rte_eth_dev_owner_unset(const uint16_t port_id, const uint64_t owner_id)
 			{.id = RTE_ETH_DEV_NO_OWNER, .name = ""};
 	int ret;
 
+	if (!rte_eth_is_valid_owner_id(owner_id))
+		return -EINVAL;
+
 	rte_eth_dev_shared_data_prepare();
 
 	rte_spinlock_lock(&rte_eth_dev_shared_data->ownership_lock);
-- 
2.18.0