From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Rothwell <sfr@canb.auug.org.au>
Subject: linux-next: build warning after merge of the net-next tree
Date: Mon, 4 Feb 2019 10:44:27 +1100
Message-ID: <20190204104427.0c0da12d@canb.auug.org.au>
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To: David Miller <davem@davemloft.net>, Networking <netdev@vger.kernel.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, Deepa Dinamani <deepa.kernel@gmail.com>, "Gustavo A. R. Silva" <gustavo@embeddedor.com>, Kees Cook <keescook@chromium.org>
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Hi all,

After merging the net-next tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

net/core/sock.c: In function 'sock_setsockopt':
net/core/sock.c:914:3: warning: this statement may fall through [-Wimplicit=
-fallthrough=3D]
   sock_set_flag(sk, SOCK_TSTAMP_NEW);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
net/core/sock.c:915:2: note: here
  case SO_TIMESTAMPING_OLD:
  ^~~~

Introduced by commit

  9718475e6908 ("socket: Add SO_TIMESTAMPING_NEW")

I get this warning because I am building with -Wimplicit-fallthrough
in attempt to catch new additions early.  The gcc warning can be turned
off by adding a /* fall through */ comment at the point the fall through
happens (assuming that the fall through is intentional).

--=20
Cheers,
Stephen Rothwell

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