On Sun, Dec 17, 2017 at 11:15:37AM +0100, Geert Uytterhoeven wrote:
> On Sat, Dec 16, 2017 at 3:00 AM, kbuild test robot
> <[email protected]> wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git 
> > tty-next
> > head:   38d5583ff8900c543322a74471b436d1b8b4018a
> > commit: f6731485a51978ca0931c787fcb8a0bc4dcc9303 [23/34] tty: serial: 
> > sh-sci: Hide number of ports config question
> > config: ia64-allyesconfig (attached as .config)
> > compiler: ia64-linux-gcc (GCC) 7.2.0
> > reproduce:
> >         wget 
> > https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
> > ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         git checkout f6731485a51978ca0931c787fcb8a0bc4dcc9303
> >         # save the attached .config to linux build tree
> >         make.cross ARCH=ia64
> >
> > All errors (new ones prefixed by >>):
> >
> >    .config:3814:warning: symbol value '' invalid for SERIAL_SH_SCI_NR_UARTS
> 
> config SERIAL_SH_SCI_NR_UARTS
>         int "Maximum number of SCI(F) serial ports" if EXPERT
>         depends on SERIAL_SH_SCI
>         default "3" if H8300
>         default "10" if SUPERH
>         default "18" if ARCH_RENESAS
> 
> Doh, if test compiling for non-H8300/SUPERH/ARCH_RENESAS, "int" doesn't
> assign a sane numerical default value to the symbol, but an empty string :-(
> 
> So we do need e.g.
> 
>         default "2"
> 
> at the bottom.
> 
> Greg: Do you want a v2, or an incremental patch?

Incremental is good, I don't want to have to revert and then add a v2.

thanks,

greg k-h

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