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drm/atomic-helper: Make crtc helper funcs optional 

Allow drivers to call drm_atomic_helper_check_modeset() without
having the crtc helper funcs specified. i915 doesn't need those
anymore.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190708125325.16576-3-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
This commit is contained in:
Ville Syrjälä 2019-07-08 15:53:08 +03:00
parent 4fb419b216
commit 26564be56d
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/drm_atomic_helper.c
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@ -471,7 +471,7 @@ mode_fixup(struct drm_atomic_state *state)
continue;
funcs = crtc->helper_private;
if (!funcs->mode_fixup)
if (!funcs || !funcs->mode_fixup)
continue;
ret = funcs->mode_fixup(crtc, &new_crtc_state->mode,