linux-kernel - [PATCH v2 2/2] bpf: Correctly annotate implicit fall through in bpf_base_func

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Date:   Wed, 16 Jan 2019 20:35:41 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Daniel Borkmann <daniel@...earbox.net>
Cc:     Mathieu Malaterre <malat@...ian.org>,
        Alexei Starovoitov <ast@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/2] bpf: Correctly annotate implicit fall through in bpf_base_func_proto

There is a plan to build the kernel with -Wimplicit-fallthrough and
this place in the code produced a warnings (W=1).

To preserve as much of the existing comment only change a ‘:’ into a ‘,’.
This is enough change, to match the regular expression expected by GCC.

This commit remove the following warning:

  net/core/filter.c:5310:6: warning: this statement may fall through [-Wimplicit-fallthrough=]

Signed-off-by: Mathieu Malaterre <malat@...ian.org>
---
v2: reword the patch subject, remove a typo

 net/core/filter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/filter.c b/net/core/filter.c
index 2b3b436ef545..d9076e609fca 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -5309,7 +5309,7 @@ bpf_base_func_proto(enum bpf_func_id func_id)
 	case BPF_FUNC_trace_printk:
 		if (capable(CAP_SYS_ADMIN))
 			return bpf_get_trace_printk_proto();
-		/* else: fall through */
+		/* else, fall through */
 	default:
 		return NULL;
 	}
-- 
2.19.2