Device: S666LN (Itel RS4)
Build Date: 22 March 2026

🚀 Device Changelog:

===== 20260326 =====
- Switch back vibrator to LineageOS source
- Bring back MTK HIDL
- Fixed battery drain issue
- Fixed overhead from heap/stack allocation
- Enable cached app freezer via cgroup v2 (adapted from Malachite)
- Migrate ~70 lines of synchronous chmod/chown (Camera, Mali GPU, MDP, etc.) from init scripts to ueventd
- Resolve cpuctl shares conflict; cgroup weights now handled exclusively by init.mt6789.power.rc
- Weekly builds now supported


===== 20260322 =====
- vibrator: persistent CallbackWorker with wait_until(), cancel-token dispatch, deterministic off() cleanup
- vibrator: rate-limit verbose logs to ~1Hz
- vibrator: port CallbackWorker to hw-mtk
- lights: demote backlight logs to DEBUG; rate-limit 1Hz (~60 write()/sec cut)
- thermal: fix threadLoop lockup from std::max(0, overflow) → pollOnce(0) tight loop
- thermal: fix severity timer miss (> → >=)
- thermal: fix NL_CB_SEQ_CHECK done=1 causing 80% thermal event loss during burst
- thermal: fix sleep_ms_ indeterminate init; clamp timeout_remaining underflow
- thermal: add spurious wakeup guard; remove dead nlSeqCheckHandle
- memtrack: fix sscanf %ld UB on ILP32; use PRId64 for portable GPU memory accounting
- aidl: demote power HAL logs to VERBOSE (~30 write()/sec cut)
- sepolicy: allow 884 legitimate AVC denials across HAL domains
- sepolicy: fix missed denials; allow thermal HAL lookup, vendor_init IMS/BT props, cameraserver dmabuf, Goodix fingerprint data
- sepolicy: allow hal_vibrator_default sysfs_vibrator r/w for gain-based amplitude
- sepolicy: dontaudit 2089 neverallow'd hits; fix fsck_untrusted vold_device access
- prop: seed haptics gain/duration defaults; disable connsys/wlan logging
- prop: clean up properties
- proprietary-files: import libmtkcam_{3rdparty.customer,metastore} from vendor/lib64/mt6789/
- DRM: install clearkey apex; drop liboemcrypto → L3 fallback (fixes streaming)
- Switch to AIDL Codec2
- blobs: update to 251212V1661
- audio: drop Dolby DS2 DAP (CPU/thermal overhead, no benefit on MT6789)