Linux kernel 5.12 was just released last week, bringing numerous new features and improved hardware support. Among the biggest changes, there?s LTO support in Clang, a new dynamic thermal power management mechanism, initial support for zoned block devices for the Btrfs file system, kernel thread-based NAPI polling, eMMC inline encryption support, and support for the Lenovo IdeaPad platform profile. Collabora?s contributions to Linux kernel 5.12 targeted the closing of the gap between hardware support on vendor trees and the mainline kernel tree. For that, they?ve contributed to the ChromeOS EC platform support, power/supply and reset/shutdown subsystems, Mediatek SoC support, and improved the V4L2 (Video4Linux) Async notifier API to be consistent and easier to use.