Re: [PATCH v3 01/30] drm/i915/xehpsdv: Correct parameters for IS_XEHPSDV_GT_STEP()

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On Tue, 2021-07-27 at 11:38 -0700, Matt Roper wrote:
> On Tue, Jul 27, 2021 at 11:34:28AM -0700, Yokoyama, Caz wrote:
> > On Fri, 2021-07-23 at 10:42 -0700, Matt Roper wrote:
> > > During a rebase the parameters were partially renamed, but not
> > > completely.  Since the subsequent patches that start using this
> > > macro
> > > haven't landed on an upstream tree yet this didn't cause a build
> > > failure.
> > > 
> > > Fixes: 086df54e20be ("drm/i915/xehpsdv: add initial XeHP SDV
> > > definitions")
> > > Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
> > > ---
> > >  drivers/gpu/drm/i915/i915_drv.h | 4 ++--
> > >  1 file changed, 2 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/drivers/gpu/drm/i915/i915_drv.h
> > > b/drivers/gpu/drm/i915/i915_drv.h
> > > index d118834a4ed9..d44d0050beec 100644
> > > --- a/drivers/gpu/drm/i915/i915_drv.h
> > > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > > @@ -1562,8 +1562,8 @@ IS_SUBPLATFORM(const struct
> > > drm_i915_private
> > > *i915,
> > >       (IS_ALDERLAKE_P(__i915) && \
> > >        IS_GT_STEP(__i915, since, until))
> > > 
> > > -#define IS_XEHPSDV_GT_STEP(p, since, until) \
> > > -     (IS_XEHPSDV(p) && IS_GT_STEP(__i915, since, until))
> > > +#define IS_XEHPSDV_GT_STEP(__i915, since, until) \
> > > +     (IS_XEHPSDV(__i915) && IS_GT_STEP(__i915, since, until))
> > Is your comment saying that the first parameter
> > of IS_XEHPSDV_GT_STEP(), p or __i915 must be the first parameter of
> > both IS_XEHPSDV() and IS_GT_STEP()? The older code is a bug,
> > correct?
> > -caz
> 
> We can name the parameter anything we want, it just has to be used
> consistently throughout the macro.  Defining the parameter as 'p' but
> then passing a different undefined name '__i915' into IS_GT_STEP
> won't
> work (but it will only start causing compile errors when we land
> workarounds and such that start using the macro).
Reviewed-by: Caz Yokoyama <caz.yokoyama@xxxxxxxxx>
-caz

> 
> 
> Matt
> 
> > >  /*
> > >   * DG2 hardware steppings are a bit unusual.  The hardware
> > > design
> > > was forked
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