On Fri, Nov 30, 2018 at 4:48 AM Daniel Vetter <[email protected]> wrote:
>
> On Thu, Nov 29, 2018 at 03:36:48PM -0500, Sean Paul wrote:
> > From: Sean Paul <[email protected]>
> >
> > Kbuild was complaining about:
> > >> drivers/gpu/drm/drm_atomic_helper.c:3169:27: warning: 'state' may be 
> > >> used uninitialized in this function [-Wmaybe-uninitialized]
> >
> > Now state can't actually be used uninitialized, but we'll assign a value
> > anyways so it stops bellyaching.
> >
> > Fixes: b7ea04d299c7 ("drm: Add DRM_MODESET_LOCK_BEGIN/END helpers")
> > Cc: Daniel Vetter <[email protected]>
> > Cc: Sean Paul <[email protected]>
> > Cc: Maarten Lankhorst <[email protected]>
> > Cc: Maxime Ripard <[email protected]>
> > Cc: Sean Paul <[email protected]>
> > Cc: David Airlie <[email protected]>
> > Cc: [email protected]
> > Signed-off-by: Sean Paul <[email protected]>
>
> Reviewed-by: Daniel Vetter <[email protected]>
>

Thanks for the review, I've pushed it to drm-misc-next with a more
detailed commit message including kbuild link/configuration (upon
Dave's suggestion).

Sean

> > ---
> >  drivers/gpu/drm/drm_atomic_helper.c | 3 +++
> >  1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
> > b/drivers/gpu/drm/drm_atomic_helper.c
> > index 0d58c40aa4401..0ee83efeb94a4 100644
> > --- a/drivers/gpu/drm/drm_atomic_helper.c
> > +++ b/drivers/gpu/drm/drm_atomic_helper.c
> > @@ -3169,6 +3169,9 @@ struct drm_atomic_state 
> > *drm_atomic_helper_suspend(struct drm_device *dev)
> >       struct drm_atomic_state *state;
> >       int err;
> >
> > +     /* This can never be returned, but it makes the compiler happy */
> > +     state = ERR_PTR(-EINVAL);
> > +
> >       DRM_MODESET_LOCK_ALL_BEGIN(dev, ctx, 0, err);
> >
> >       state = drm_atomic_helper_duplicate_state(dev, &ctx);
> > --
> > Sean Paul, Software Engineer, Google / Chromium OS
> >
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
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