linux-kernel - [PATCH] net: smc_close: mark expected switch fall-throughs

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Message-ID: <20171019220244.GA22041@embeddedor.com>
Date:   Thu, 19 Oct 2017 17:02:44 -0500
From:   "Gustavo A. R. Silva" <garsilva@...eddedor.com>
To:     Ursula Braun <ubraun@...ux.vnet.ibm.com>,
        "David S. Miller" <davem@...emloft.net>
Cc:     linux-s390@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <garsilva@...eddedor.com>
Subject: [PATCH] net: smc_close: mark expected switch fall-throughs

In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that in this particular case I placed a "fall through" comment on
its own line, which is what GCC is expecting to find.

Signed-off-by: Gustavo A. R. Silva <garsilva@...eddedor.com>
---
 net/smc/smc_close.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index f0d16fb..9b16f40 100644
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -360,7 +360,8 @@ static void smc_close_passive_work(struct work_struct *work)
 	case SMC_PEERCLOSEWAIT1:
 		if (rxflags->peer_done_writing)
 			sk->sk_state = SMC_PEERCLOSEWAIT2;
-		/* fall through to check for closing */
+		/* to check for closing */
+		/* fall through */
 	case SMC_PEERCLOSEWAIT2:
 	case SMC_PEERFINCLOSEWAIT:
 		if (!smc_cdc_rxed_any_close(&smc->conn))
-- 
2.7.4