Re: [kbuild-all] Re: drivers/pinctrl/renesas/pinctrl-rzn1.c:183:52: sparse: sparse: dubious: x | !y

[Rong Chen]

On 10/20/20 3:49 PM, Geert Uytterhoeven wrote:
> Hi Kernel Test Robot,
>
> On Tue, Oct 20, 2020 at 9:42 AM kernel test robot <lkp@xxxxxxxxx> wrote:
> > First bad commit (maybe != root cause):
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   270315b8235e3d10c2e360cff56c2f9e0915a252
> > commit: 077365a941166f3a7f5894017f9d26d17cdec00e pinctrl: Rename sh-pfc to renesas
> > date:   5 weeks ago
> > config: x86_64-randconfig-s032-20201020 (attached as .config)
> > compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> > reproduce:
> >          # apt-get install sparse
> >          # sparse version: v0.6.3-dirty
> >          # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=077365a941166f3a7f5894017f9d26d17cdec00e
> >          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> >          git fetch --no-tags linus master
> >          git checkout 077365a941166f3a7f5894017f9d26d17cdec00e
> >          # save the attached .config to linux build tree
> >          make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@xxxxxxxxx>
> >
> >
> > "sparse warnings: (new ones prefixed by >>)"
> > > > drivers/pinctrl/renesas/pinctrl-rzn1.c:183:52: sparse: sparse: dubious: x | !y
> >     drivers/pinctrl/renesas/pinctrl-rzn1.c:189:52: sparse: sparse: dubious: x | !y
> This is a false positive, cfr.
> https://lore.kernel.org/linux-renesas-soc/CAMuHMdV=aWj9ePL9gAa-vsmLLUZkY4ip2337am8A7ktxg7Yniw@xxxxxxxxxxxxxx/

Hi Geert,

Thanks for the information, we'll double check such warning in the future.

Best Regards,
Rong Chen