[dpdk-dev] [PATCH v2 2/2] net/failsafe: fix duplicate event registration

[Matan Azrad <matan@mellanox.com>]

When the fail-safe device is reconfigured, it attempts to register
again for the sub-devices LSC and RMV events.

Prevent an event registration if it is already done.

Fixes: 598fb8aec6f6 ("net/failsafe: support device removal")
Cc: stable@dpdk.org

Signed-off-by: Matan Azrad <matan@mellanox.com>
---
 drivers/net/failsafe/failsafe_ops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/failsafe/failsafe_ops.c b/drivers/net/failsafe/failsafe_ops.c
index e0570b6..24e91c9 100644
--- a/drivers/net/failsafe/failsafe_ops.c
+++ b/drivers/net/failsafe/failsafe_ops.c
@@ -138,7 +138,7 @@
 			fs_unlock(dev, 0);
 			return ret;
 		}
-		if (rmv_interrupt) {
+		if (rmv_interrupt && sdev->rmv_callback == 0) {
 			ret = rte_eth_dev_callback_register(PORT_ID(sdev),
 					RTE_ETH_EVENT_INTR_RMV,
 					failsafe_eth_rmv_event_callback,
@@ -150,7 +150,7 @@
 				sdev->rmv_callback = 1;
 		}
 		dev->data->dev_conf.intr_conf.rmv = 0;
-		if (lsc_interrupt) {
+		if (lsc_interrupt && sdev->lsc_callback == 0) {
 			ret = rte_eth_dev_callback_register(PORT_ID(sdev),
 						RTE_ETH_EVENT_INTR_LSC,
 						failsafe_eth_lsc_event_callback,
-- 
1.9.5