[PATCH 0/8] drm: fix .get_modes() return values

[Jani Nikula <jani.nikula@intel.com>]

The drm_connector_helper_funcs .get_modes() hooks are not supposed to
return negative error codes. Some do, but they're not checked, and could
lead to mysterious errors. Fix this all over the place.

BR,
Jani.

Jani Nikula (8):
  drm/probe-helper: warn about negative .get_modes()
  drm/panel: do not return negative error codes from
    drm_panel_get_modes()
  drm/exynos: do not return negative values from .get_modes()
  drm/bridge: lt8912b: do not return negative values from .get_modes()
  drm/imx/ipuv3: do not return negative values from .get_modes()
  drm/vc4: hdmi: do not return negative values from .get_modes()
  drm/bridge: lt9611uxc: use int for holding number of modes
  drm/exynos: simplify the return value handling in
    exynos_dp_get_modes()

 drivers/gpu/drm/bridge/lontium-lt8912b.c     | 16 +++++++---------
 drivers/gpu/drm/bridge/lontium-lt9611uxc.c   |  2 +-
 drivers/gpu/drm/drm_panel.c                  | 17 +++++++++++------
 drivers/gpu/drm/drm_probe_helper.c           |  7 +++++++
 drivers/gpu/drm/exynos/exynos_dp.c           |  7 +++----
 drivers/gpu/drm/exynos/exynos_drm_vidi.c     |  4 ++--
 drivers/gpu/drm/exynos/exynos_hdmi.c         |  4 ++--
 drivers/gpu/drm/imx/ipuv3/parallel-display.c |  4 ++--
 drivers/gpu/drm/vc4/vc4_hdmi.c               |  2 +-
 include/drm/drm_modeset_helper_vtables.h     |  3 ++-
 10 files changed, 38 insertions(+), 28 deletions(-)

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2.39.2