ahci: Add functions to manage runtime PM of AHCI ports

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Add new functions ahci_rpm_get_port()/ahci_rpm_put_port() that change
runtime PM status of AHCI ports. Depending if the AHCI host has runtime PM
enabled or disabled calling these may trigger runtime suspend/resume of the
host controller.

We also call these functions in appropriate places to make sure host
controller registers are available before using them.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Mika Westerberg 2016-02-18 10:54:16 +02:00 • committed by Tejun Heo

parent f1d848f9fb

commit bb03c64069

1 changed files with 47 additions and 1 deletions

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drivers/ata/libahci.c

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