Linux kernel 3.12.45 LTS adds various improvements to the ARC, ARM, ARM64, x86, MIPS, SPARC, and PowerPC (PPC) hardware architectures, updates numerous drivers, especially for things like ATA, Bluetooth, CPUFreq, CPUIdle, Crypto, DRM (mostly Intel i915), HID, iiO, IOMMU, MTD, PCI, PCMCIA, SCSI, SH, Thermal, TTY, and USB, add enhancements to the Btrfs and UFS file systems, and fixes multiple networking and sound issues.