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| author | Nathan Huckleberry <nhuck@google.com> | 2022-09-13 13:55:48 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-03 23:50:54 +0900 |
| commit | 22d9433489d9ada6c319e7a6017431b185952716 (patch) | |
| tree | ea06387ae829705fe4f4681429732dec7ccbedc6 | |
| parent | 0ba32d40be425ac8316adb9427f3ca7e590b22cf (diff) | |
| download | linux-22d9433489d9ada6c319e7a6017431b185952716.tar.gz linux-22d9433489d9ada6c319e7a6017431b185952716.tar.bz2 linux-22d9433489d9ada6c319e7a6017431b185952716.zip | |
drm/msm: Fix return type of mdp4_lvds_connector_mode_valid
[ Upstream commit 0b33a33bd15d5bab73b87152b220a8d0153a4587 ]
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 mdp4_lvds_connector_mode_valid should be changed from
int to enum drm_mode_status.
Reported-by: Dan Carpenter <error27@gmail.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/1703
Cc: llvm@lists.linux.dev
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Fixes: 3e87599b68e7 ("drm/msm/mdp4: add LVDS panel support")
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Patchwork: https://patchwork.freedesktop.org/patch/502878/
Link: https://lore.kernel.org/r/20220913205551.155128-1-nhuck@google.com
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c index e3b1c86b7aae..5c932b3fb831 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c @@ -71,8 +71,9 @@ static int mdp4_lvds_connector_get_modes(struct drm_connector *connector) return ret; } -static int mdp4_lvds_connector_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) +static enum drm_mode_status +mdp4_lvds_connector_mode_valid(struct drm_connector *connector, + struct drm_display_mode *mode) { struct mdp4_lvds_connector *mdp4_lvds_connector = to_mdp4_lvds_connector(connector); |