Merge branch 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "The most notable is the revert of lock splitting optimization in ahci.
  This also made the IRQ handling threaded even when there's only one
  IRQ in use.  The conversion missed IRFQ_SHARED leading to screaming
  IRQs problem in some cases and the threaded IRQ handling showed
  performance regression in some LKP test cases.  The changes are
  reverted for now.  It'll probably be retried once threaded IRQ
  handling is removed from ahci.

  Other than that, there's one fix for ahci and several patches adding
  device IDs"

* 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ahci: fix AHCI parameters not taken into account
  ata: sata_rcar: Add r8a7793 device support
  ahci: Add Device IDs for Intel Sunrise Point PCH
  ahci: disable MSI instead of NCQ on Samsung pci-e SSDs on macbooks
  Revert "AHCI: Optimize single IRQ interrupt processing"
  Revert "AHCI: Do not acquire ata_host::lock from single IRQ handler"
  ata: sata_rcar: Disable DIPM mode for r8a7790 ES1

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