Re: drm/amdkfd: bad CONFIG_ prefix for enum entries

[Christian König <deathsimple@xxxxxxxxxxx>]

On 04.06.2015 17:09, Alex Deucher wrote:
> On Thu, Jun 4, 2015 at 10:04 AM, Valentin Rothberg
> <valentinrothberg@xxxxxxxxx> wrote:
> > Hi Alex,
> >
> > On Thu, Jun 4, 2015 at 4:01 PM, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
> > > On Thu, Jun 4, 2015 at 9:48 AM, Oded Gabbay <oded.gabbay@xxxxxxxxx> wrote:
> > > > Hi Valentin,
> > > > Thanks for catching that.
> > > > I would be grateful if you could fix this yourself.
> > > Please try and keep CONFIG in the name since this range of registers
> > > are called CONFIG registers.
> > I cannot force changing those symbols, but point out that it's
> > violating naming conventions.  I would suggest to s/CONFIG_/CONF_/ to
> > make clear that it's config registers.  Would you be fine with that?
> What about something like AMD_CONFIG_REG?

For the background: The register headers will be auto generated in the 
future and if the hardware designer named the register CONFIG_* the name 
will show up in our headers as such.

Prefixing it with AMD_ sounds like a good solution to me, too.

Regards,
Christian.

> > Kind regards,
> >   Valentin
> >
> > > Alex
> > >
> > > > Oded
> > > >
> > > > On Thu, Jun 4, 2015 at 4:45 PM Valentin Rothberg
> > > > <valentinrothberg@xxxxxxxxx> wrote:
> > > > > Hi Yair,
> > > > >
> > > > > your commit fbeb661bfa89 ("drm/amdkfd: Add skeleton H/W debugger
> > > > > module support") has shown up in today's linux-next tree (i.e.,
> > > > > next-20150604).  The commit adds the following lines of code to
> > > > > drivers/gpu/drm/amd/amdkfd/kfd_dbgdev.h:
> > > > >
> > > > > +/* CONFIG reg space definition */
> > > > > +enum {
> > > > > +       CONFIG_REG_BASE = 0x2000,       /* in dwords */
> > > > > +       CONFIG_REG_END = 0x2B00,
> > > > > +       CONFIG_REG_SIZE = CONFIG_REG_END - CONFIG_REG_BASE
> > > > > +};
> > > > >
> > > > > There is a problem with the 'CONFIG_' prefix of those entries.  This
> > > > > prefix is reserved for Kconfig options in Make/Kbuild and CPP syntax,
> > > > > so that static analysis tools (and readers of the code) may mistakenly
> > > > > assume that the symbol is defined somewhere in a Kconfig file.
> > > > >
> > > > > I detected the issue with ./scripts/checkkconfigsymbols.py.  Would you
> > > > > mind renaming those entries to something without the 'CONFIG_' prefix?
> > > > >   I can also take care of it if you wish to.
> > > > >
> > > > > Kind regards,
> > > > >   Valentin
> > > >
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