linux-kernel - Re: [PATCH 13/36] tty: serial: 8250: 8250_port: Staticify functions referenced by pointers

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

Message-ID: <20201106101646.GB2063125@dell>
Date:   Fri, 6 Nov 2020 10:16:46 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, Jiri Slaby <jirislaby@...nel.org>,
        Mike Hudson <Exoray@...s.ca>, linux-serial@...r.kernel.org
Subject: Re: [PATCH 13/36] tty: serial: 8250: 8250_port: Staticify functions
 referenced by pointers

On Fri, 06 Nov 2020, Lee Jones wrote:

> On Fri, 06 Nov 2020, Greg Kroah-Hartman wrote:
> 
> > On Wed, Nov 04, 2020 at 07:35:26PM +0000, Lee Jones wrote:
> > > Fixes the following W=1 kernel build warning(s):
> > > 
> > >  drivers/tty/serial/8250/8250_port.c:349:14: warning: no previous prototype for ‘au_serial_in’ [-Wmissing-prototypes]
> > >  drivers/tty/serial/8250/8250_port.c:359:6: warning: no previous prototype for ‘au_serial_out’ [-Wmissing-prototypes]
> > > 
> > > Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > Cc: Jiri Slaby <jirislaby@...nel.org>
> > > Cc: Mike Hudson <Exoray@...s.ca>
> > > Cc: linux-serial@...r.kernel.org
> > > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > > ---
> > >  drivers/tty/serial/8250/8250_port.c | 4 ++--
> > >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > And now I get build errors of:
> > 	ld: drivers/tty/serial/8250/8250_early.o: in function `early_au_setup':
> > 	8250_early.c:(.init.text+0x7): undefined reference to `au_serial_in'
> > 	ld: 8250_early.c:(.init.text+0xf): undefined reference to `au_serial_out'
> > 	make: *** [Makefile:1164: vmlinux] Error 1
> > 
> 
> I *always* test build my sets before posting.
> 
> /investigating

What config failed for you?

It looks as though SERIAL_8250_CONSOLE is a bool and doesn't appear to
be compiled with allmodconfig builds for any architecture that I test
against (Arm, Arm64, MIPS, PPC, x86).

> > perhaps W=1 was wrong here...

NEVER! ;)

The prototype just needs moving is all.

I'll fix the issue and re-post an alternative patch.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog