On Tue, Mar 06, 2018 at 06:48:46PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Enum values >63 with a bitmask property is a programmer error. WARN
> when someone is attempting this.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/drm_property.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c
> index e676b1ecc705..019d1abb94ca 100644
> --- a/drivers/gpu/drm/drm_property.c
> +++ b/drivers/gpu/drm/drm_property.c
> @@ -386,8 +386,8 @@ int drm_property_add_enum(struct drm_property *property, int index,
> * Bitmask enum properties have the additional constraint of values
> * from 0 to 63
> */
> - if (drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
> - (value > 63))
> + if (WARN_ON(drm_property_type_is(property, DRM_MODE_PROP_BITMASK) &&
> + value > 63))
> return -EINVAL;
>
> list_for_each_entry(prop_enum, &property->enum_list, head) {
> --
> 2.16.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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