drm/atomic: fix null pointer access to mode_fixup callback
This patch fixes null pointer access incurred when encoder driver didn't set its own mode_fixup callback. mode_fixup callback shoudn't be called if the callback of drm_encoder_helper_funcs is NULL. Changelog v2: - change it to else if Signed-off-by: Inki Dae <inki.dae@samsung.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -299,7 +299,7 @@ mode_fixup(struct drm_atomic_state *state)
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encoder->base.id, encoder->name);
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return ret;
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}
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} else {
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} else if (funcs->mode_fixup) {
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ret = funcs->mode_fixup(encoder, &crtc_state->mode,
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&crtc_state->adjusted_mode);
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if (!ret) {
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