[Intel-gfx] [PATCH] drm/i915: Redefine EINVAL for debugging

[Chris Wilson]

Quoting Joonas Lahtinen (2018-06-21 09:53:20)
> Quoting Chris Wilson (2018-06-21 11:01:50)
> > To aide debugging spurious EINVALs, include a debug message every time
> > we emit one from execbuf.
> > 
> > References: https://bugs.freedesktop.org/show_bug.cgi?id=106744
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> 
> That's special kind of evil. But should do the job.
> 
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> 
> You might be able to get away from hardcoding the 22 with first
> calling the macro __EINVAL and then doing some trickery.

Not sure what trickery. I tried the usual 
	#define __concat(x, y) x##y
indirection, but my CPP magic needs more power.
-Chris