From: Hans de Goede Date: Sat, 22 Feb 2014 15:53:30 +0000 (+0100) Subject: libahci: Allow drivers to override start_engine X-Git-Tag: v3.15-rc1~161^2~54 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=039ece38da45f5e6a94be3aa7611cf3634bc2461;p=pandora-kernel.git libahci: Allow drivers to override start_engine Allwinner A10 and A20 ARM SoCs have an AHCI sata controller which needs a special register to be poked before starting the DMA engine. This register gets reset on an ahci_stop_engine call, so there is no other place then ahci_start_engine where this poking can be done. This commit allows drivers to override ahci_start_engine behavior for use by the Allwinner AHCI driver (and potentially other drivers in the future). Signed-off-by: Hans de Goede Signed-off-by: Tejun Heo --- Reading git-diff-tree failed