[Intel-gfx] [PATCH 18/22] drm/i915: Use drm_mode_init() for on-stack modes

[Ville Syrjälä]

On Wed, Mar 16, 2022 at 10:00:06AM +0200, Jani Nikula wrote:
> On Fri, 18 Feb 2022, Ville Syrjala <ville.syrjala at linux.intel.com> wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> >
> > Initialize on-stack modes with drm_mode_init() to guarantee
> > no stack garbage in the list head, or that we aren't copying
> > over another mode's list head.
> >
> > Based on the following cocci script, with manual fixups:
> > @decl@
> > identifier M;
> > expression E;
> > @@
> > - struct drm_display_mode M = E;
> > + struct drm_display_mode M;
> >
> > @@
> > identifier decl.M;
> > expression decl.E;
> > statement S, S1;
> > @@
> > struct drm_display_mode M;
> > ... when != S
> > + drm_mode_init(&M, &E);
> > +
> > S1
> >
> > @@
> > expression decl.E;
> > @@
> > - &*E
> > + E
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> I wonder if that cocci could be added to scripts/coccinelle or something
> to detect anyone adding new ones?

Maybe.

Julia & co, would you be open to having drm subsystem specific
coccinelle scripts? If so where should we put the?
scripts/coccinelle/drm perhaps?

-- 
Ville Syrjälä
Intel