Commit 4cecd1b3 authored Jun 23, 2020 by Raviteja Tamatam

disp: msm: sde: avoid registering vblank callback during CWB



During cases where vblank callback registration happens during
CWB is enabled and deregistered at point of no CWB, WB encoder
is left with dangling vblank_cb. Added changes to avoid registering
vblank callback on the clone mode encoder.

Change-Id: I62aa12ef453166d2f5558852d924f87841872f37
Signed-off-by: Raviteja Tamatam <travitej@codeaurora.org>

parent 452d137b

msm/sde/sde_encoder.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -3710,6 +3710,11 @@ void sde_encoder_register_vblank_callback(struct drm_encoder *drm_enc,
		SDE_DEBUG_ENC(sde_enc, "\n");
		SDE_EVT32(DRMID(drm_enc), enable);

		if (sde_encoder_in_clone_mode(drm_enc)) {
		SDE_EVT32(DRMID(drm_enc), SDE_EVTLOG_ERROR);
		return;
		}

		spin_lock_irqsave(&sde_enc->enc_spinlock, lock_flags);
		sde_enc->crtc_vblank_cb = vbl_cb;
		sde_enc->crtc_vblank_cb_data = vbl_data;