Mika Westerberg bb03c64069
ahci: Add functions to manage runtime PM of AHCI ports ...
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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bb03c64069