linux-kernel - linux-next: build warning after merge of the fbdev tree

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20190402093007.0b03b02e@canb.auug.org.au>
Date:   Tue, 2 Apr 2019 09:30:07 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Yifeng Li <tomli@...li.me>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Kees Cook <keescook@...omium.org>
Subject: linux-next: build warning after merge of the fbdev tree

Hi Bartlomiej,

After merging the fbdev tree, today's linux-next build (x86_64
allmodconfig) produced this warning:

drivers/video/fbdev/sm712fb.c: In function 'smtc_blank':
drivers/video/fbdev/sm712fb.c:900:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
    smtc_seqw(0x6b, 0x02);
    ^~~~~~~~~~~~~~~~~~~~~
drivers/video/fbdev/sm712fb.c:901:3: note: here
   case 0x720:
   ^~~~

Introduced by commit

  f627caf55b8e ("fbdev: sm712fb: fix crashes and garbled display during DPMS modesetting")

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).

-- 
Cheers,
Stephen Rothwell

Content of type "application/pgp-signature" skipped