[PATCH v3 07/16] net/cxgbe: 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/cxgbe/clip_tbl.c | 2 +-
 drivers/net/cxgbe/mps_tcam.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/cxgbe/clip_tbl.c b/drivers/net/cxgbe/clip_tbl.c
index 072fc74..f64b922 100644
--- a/drivers/net/cxgbe/clip_tbl.c
+++ b/drivers/net/cxgbe/clip_tbl.c
@@ -55,7 +55,7 @@ void cxgbe_clip_release(struct rte_eth_dev *dev, struct clip_entry *ce)
 	int ret;
 
 	t4_os_lock(&ce->lock);
-	if (__atomic_sub_fetch(&ce->refcnt, 1, __ATOMIC_RELAXED) == 0) {
+	if (__atomic_fetch_sub(&ce->refcnt, 1, __ATOMIC_RELAXED) - 1 == 0) {
 		ret = clip6_release_mbox(dev, ce->addr);
 		if (ret)
 			dev_debug(adap, "CLIP FW DEL CMD failed: %d", ret);
diff --git a/drivers/net/cxgbe/mps_tcam.c b/drivers/net/cxgbe/mps_tcam.c
index abbf06e..c7cdf29 100644
--- a/drivers/net/cxgbe/mps_tcam.c
+++ b/drivers/net/cxgbe/mps_tcam.c
@@ -195,7 +195,7 @@ int cxgbe_mpstcam_remove(struct port_info *pi, u16 idx)
 					   entry->mask, idx, 1, pi->port_id,
 					   false);
 	else
-		ret = __atomic_sub_fetch(&entry->refcnt, 1, __ATOMIC_RELAXED);
+		ret = __atomic_fetch_sub(&entry->refcnt, 1, __ATOMIC_RELAXED) - 1;
 
 	if (ret == 0) {
 		reset_mpstcam_entry(entry);
-- 
1.8.3.1