[PATCH 3.12 32/72] libahci: Allow drivers to override start_engine

From: Hans de Goede 3.12-stable review patch. If anyone has any objections, please let me know. === commit 039ece38da45f5e6a94be3aa7611cf3634bc2461 upstream. Allwinner A10 and A20 ARM SoCs have an AHCI sata controller which needs a special register to be poked before starting the

[PATCH 3.12 32/72] libahci: Allow drivers to override start_engine

From: Hans de Goede 3.12-stable review patch. If anyone has any objections, please let me know. === commit 039ece38da45f5e6a94be3aa7611cf3634bc2461 upstream. Allwinner A10 and A20 ARM SoCs have an AHCI sata controller which needs a special register to be