Re: [PATCH v2 2/3] drm: Add a drm_gem_objects_lookup helper

[Chris Wilson]

Quoting Daniel Vetter (2019-04-01 14:06:48)
> On Mon, Apr 1, 2019 at 9:47 AM Rob Herring <robh@xxxxxxxxxx> wrote:
> > +{
> > +       int i, ret = 0;
> > +       struct drm_gem_object *obj;
> > +
> > +       spin_lock(&filp->table_lock);
> > +
> > +       for (i = 0; i < count; i++) {
> > +               /* Check if we currently have a reference on the object */
> > +               obj = idr_find(&filp->object_idr, handle[i]);
> > +               if (!obj) {
> > +                       ret = -ENOENT;

Unwind previous drm_gem_object_get(), the caller has no idea how many
were processed before the error.
-Chris