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>
This commit is contained in:
Inki Dae 2015-08-11 21:23:49 +09:00 committed by Daniel Vetter
parent 0695726e85
commit 845249172a
1 changed files with 1 additions and 1 deletions

View File

@ -299,7 +299,7 @@ mode_fixup(struct drm_atomic_state *state)
encoder->base.id, encoder->name);
return ret;
}
} else {
} else if (funcs->mode_fixup) {
ret = funcs->mode_fixup(encoder, &crtc_state->mode,
&crtc_state->adjusted_mode);
if (!ret) {