[PATCH] drm/imx: imx-tve: Fix return type of imx_tve_connector_mode_valid

[Nathan Huckleberry]

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;
-- 
2.37.2.789.g6183377224-goog