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

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On Fri, 06 Nov 2020, Greg Kroah-Hartman wrote:

> On Fri, Nov 06, 2020 at 10:05:52AM +0000, 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@xxxxxxxxxxxxxxxxxxx>
> > > > Cc: Jiri Slaby <jirislaby@xxxxxxxxxx>
> > > > Cc: Mike Hudson <Exoray@xxxxxxx>
> > > > Cc: linux-serial@xxxxxxxxxxxxxxx
> > > > Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
> > > > ---
> > > >  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
> > > 
> > > Always test-build your patches, perhaps W=1 was wrong here...
> > 
> > I *always* test build my sets before posting.
> 
> Great, then I should have rephrased it as:
> 	Always test-build your patches and fix the error found in them
> 	before sending.

Yes, very funny! ;)

Obviously, all of that was implied in my first reply.

The problem is not a lack of testing, it's the testing method.

I thought allmodconfig would be enough, but it appears not.

Currently investigating with allyesconfig as a drop-in replacement.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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