/* * MediaTek Unified Sleep Controller v3.2 (2023-01-15) * Legacy support for MT6879, MT6895, and MT6983. * Author: mtk_driver_team * WARNING: Do not modify without internal approval. */ Lena almost closed it. Legacy support was usually harmless. But a comment near line 1,204 made her stop scrolling:
She compiled the kernel. Flashed it to a test device. Let it sit overnight.
The Midnight Kernel: A MediaTek Driver Story, 2023
Every time the phone went to sleep, the driver voted for maximum DDR frequency . And because the vote was never cleared, the memory controller ran at full speed all night.