[Intel-gfx] [PATCH] drm/i915: Tighten mmio arrays for MIPI_PORT

[Chris Wilson]

On Tue, Feb 28, 2017 at 05:00:28PM +0200, Jani Nikula wrote:
> On Tue, 28 Feb 2017, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > drivers/gpu/drm/i915/intel_dsi.c: In function ‘intel_dsi_prepare’:
> > drivers/gpu/drm/i915/intel_dsi.c:1308:1: error: the frame size of 2488 bytes is larger than 2048 bytes [-Werror=frame-larger-than=]
> >
> > which is caused by the compiling expanding every _MIPI_PORT into an
> > on-stack array of u32[3] at every callsite. Not sure why only one
> > machine/compiler appears susceptible, but with a minor tweak to _MIPI_PORT
> > we can defer the error until later.
> >
> > This is a partial revert of commit ce64645d86ac ("drm/i915: use variadic
> > macros and arrays to choose port/pipe based registers") for a particular
> > bad offender.
> >
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > Cc: Jani Nikula <jani.nikula at intel.com>
> 
> :(
> 
> Acked-by: Jani Nikula <jani.nikula at intel.com>

After a night's rest, it still doesn't compile, so pushed.
Thanks,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre