tree de5ac9b692257050bf8dbdb6ebe02e780fddad46
parent 411cb3869afd91ed40e8f12df64cd9e315356305
author Tejun Heo <htejun@gmail.com> 1208951578 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1209098713 -0400

ahci: retry enabling AHCI a few times before spitting out WARN_ON()

Some chips need AHCI_EN set more than once to actually set it.  Try a
few times before giving up and spitting out WARN_ON().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Peer Chen <pchen@nvidia.com>
Cc: Volker Armin Hemmann <volker.armin.hemmann@tu-clausthal.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>