linux-kernel - Re: sound/soc/intel/catpt/dsp.c:359:9: sparse: sparse: restricted pci_power

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Message-ID: <20201022140920.GA501158@bjorn-Precision-5520>
Date:   Thu, 22 Oct 2020 09:09:20 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     kernel test robot <lkp@...el.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Mark Brown <broonie@...nel.org>
Subject: Re: sound/soc/intel/catpt/dsp.c:359:9: sparse: sparse: restricted
 pci_power_t degrades to integer

On Thu, Oct 22, 2020 at 04:52:29PM +0300, Andy Shevchenko wrote:
> +Cc: Bjorn
> 
> On Thu, Oct 22, 2020 at 03:25:49PM +0800, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   f804b3159482eedbb4250b1e9248c308fb63b805
> > commit: 6cbfa11d2694b8a1e46d6834fb9705d5589e3ef1 ASoC: Intel: Select catpt and deprecate haswell
> > date:   3 weeks ago
> > config: i386-randconfig-s002-20201022 (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=6cbfa11d2694b8a1e46d6834fb9705d5589e3ef1
> >         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> >         git fetch --no-tags linus master
> >         git checkout 6cbfa11d2694b8a1e46d6834fb9705d5589e3ef1
> >         # save the attached .config to linux build tree
> >         make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 
> > 
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@...el.com>
> > 
> > 
> > "sparse warnings: (new ones prefixed by >>)"
> > >> sound/soc/intel/catpt/dsp.c:359:9: sparse: sparse: restricted pci_power_t degrades to integer
> >    sound/soc/intel/catpt/dsp.c:372:9: sparse: sparse: restricted pci_power_t degrades to integer
> >    sound/soc/intel/catpt/dsp.c:423:9: sparse: sparse: restricted pci_power_t degrades to integer
> >    sound/soc/intel/catpt/dsp.c:447:9: sparse: sparse: restricted pci_power_t degrades to integer
> 
> I dunno who and why created that specific bitwise type. I met not the first
> time the same Sparse complain.

Thanks for the cc.  Yeah, I hate that too.  It's one of the few
remaining warnings in drivers/pci/.  It's my goal to eradicate it for
v5.11.