We can use guard clause to optimize nesting codes like
if (condition) { ... } else { return; } in raw_rcv();
Signed-off-by: Ziyang Xuan <william.xuanziyang@xxxxxxxxxx>
---
net/can/raw.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/net/can/raw.c b/net/can/raw.c
index 9ae7c4206b9a..e7dfa3584e29 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -136,14 +136,13 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
/* eliminate multiple filter matches for the same skb */
if (this_cpu_ptr(ro->uniq)->skb == oskb &&
this_cpu_ptr(ro->uniq)->skbcnt == can_skb_prv(oskb)->skbcnt) {
- if (ro->join_filters) {
- this_cpu_inc(ro->uniq->join_rx_count);
- /* drop frame until all enabled filters matched */
- if (this_cpu_ptr(ro->uniq)->join_rx_count < ro->count)
- return;
- } else {
+ if (!ro->join_filters)
+ return;
+
+ this_cpu_inc(ro->uniq->join_rx_count);
+ /* drop frame until all enabled filters matched */
+ if (this_cpu_ptr(ro->uniq)->join_rx_count < ro->count)
return;
- }
} else {
this_cpu_ptr(ro->uniq)->skb = oskb;
this_cpu_ptr(ro->uniq)->skbcnt = can_skb_prv(oskb)->skbcnt;
--
2.25.1
