tree ec0efe48460b5b3f177fed2698ccd04b7964359b
parent cb94c1cf5a6beffbd8935eb91227df0dd1987644
author Jeff Garzik <jeff@garzik.org> 1187170726 -0400
committer Jeff Garzik <jeff@garzik.org> 1192215334 -0400

[libata] Remove ->irq_ack() hook, and ata_dummy_irq_on()

* ->irq_ack() is redundant to what the irq handler already
  performs... chk-status + irq-clear.  Furthermore, it is only
  called in one place, when screaming-irq-debugging is enabled,
  so we don't want to bother with a hook just for that.

* ata_dummy_irq_on() is only ever used in drivers that have
  no callpath reaching ->irq_on().  Remove .irq_on hook from
  those drivers, and the now-unused ata_dummy_irq_on()

Signed-off-by: Jeff Garzik <jeff@garzik.org>