On Di, 2022-09-13 at 13:55 -0700, Nathan Huckleberry wrote: > The mode_valid field in drm_connector_helper_funcs is expected to be of > type: > enum drm_mode_status (* mode_valid) (struct drm_connector *connector, > struct drm_display_mode *mode); > > The mismatched return type breaks forward edge kCFI since the underlying > function definition does not match the function hook definition. > > The return type of imx_tve_connector_mode_valid should be changed from > int to enum drm_mode_status. > > Reported-by: Dan Carpenter <error27@xxxxxxxxx> > Link: https://github.com/ClangBuiltLinux/linux/issues/1703 > Cc: llvm@xxxxxxxxxxxxxxx > Signed-off-by: Nathan Huckleberry <nhuck@xxxxxxxxxx> > --- > drivers/gpu/drm/imx/imx-tve.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c > index 6b34fac3f73a..ab4d1c878fda 100644 > --- a/drivers/gpu/drm/imx/imx-tve.c > +++ b/drivers/gpu/drm/imx/imx-tve.c > @@ -218,8 +218,9 @@ static int imx_tve_connector_get_modes(struct drm_connector *connector) > return ret; > } > > > -static int imx_tve_connector_mode_valid(struct drm_connector *connector, > - struct drm_display_mode *mode) > +static enum drm_mode_status > +imx_tve_connector_mode_valid(struct drm_connector *connector, > + struct drm_display_mode *mode) > { > struct imx_tve *tve = con_to_tve(connector); > unsigned long rate; Reviewed-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> and pushed to drm-misc-fixes. regards Philipp
