[PATCH v3 10/16] net/octeontx: use previous value atomic fetch operations

[Tyler Retzlaff]

Use __atomic_fetch_{add,and,or,sub,xor} instead of
__atomic_{add,and,or,sub,xor}_fetch adding the necessary code to
allow consumption of the resulting value.

Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
Reviewed-by: Ruifeng Wang <ruifeng.wang at arm.com>
---
 drivers/net/octeontx/octeontx_ethdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/octeontx/octeontx_ethdev.c b/drivers/net/octeontx/octeontx_ethdev.c
index d52a3e7..a21ed80 100644
--- a/drivers/net/octeontx/octeontx_ethdev.c
+++ b/drivers/net/octeontx/octeontx_ethdev.c
@@ -559,7 +559,7 @@ enum octeontx_link_speed {
 		return 0;
 
 	/* Stopping/closing event device once all eth ports are closed. */
-	if (__atomic_sub_fetch(&evdev_refcnt, 1, __ATOMIC_ACQUIRE) == 0) {
+	if (__atomic_fetch_sub(&evdev_refcnt, 1, __ATOMIC_ACQUIRE) - 1 == 0) {
 		rte_event_dev_stop(nic->evdev);
 		rte_event_dev_close(nic->evdev);
 	}
-- 
1.8.3.1