linux-hardening - [PATCH][next] net: ax25: Fix fall-through warnings for Clang

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Message-ID: <20210305073940.GA122747@embeddedor>
Date:   Fri, 5 Mar 2021 01:39:40 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Joerg Reuter <jreuter@...na.de>,
        Ralf Baechle <ralf@...ux-mips.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     linux-hams@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH][next] net: ax25: Fix fall-through warnings for Clang

In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning
by explicitly adding a break statement instead of letting the code fall
through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 net/ax25/af_ax25.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 269ee89d2c2b..2631efc6e359 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -850,6 +850,7 @@ static int ax25_create(struct net *net, struct socket *sock, int protocol,
 		case AX25_P_ROSE:
 			if (ax25_protocol_is_registered(AX25_P_ROSE))
 				return -ESOCKTNOSUPPORT;
+			break;
 #endif
 		default:
 			break;
-- 
2.27.0