| ATA_DEV_ENABLE_PM(9) | libata Core Internals | ATA_DEV_ENABLE_PM(9) |
NAME¶
ata_dev_enable_pm - enable SATA interface power management
SYNOPSIS¶
void ata_dev_enable_pm(struct ata_device * dev, enum link_pm policy);
ARGUMENTS¶
dev
device to enable power management
policy
the link power management policy
DESCRIPTION¶
Enable SATA Interface power management. This will enable Device Interface Power Management (DIPM) for min_power policy, and then call driver specific callbacks for enabling Host Initiated Power management.
LOCKING¶
Caller.
RETURNS¶
-EINVAL if IPM is not supported, 0 otherwise.
AUTHOR¶
Jeff Garzik
Author.
COPYRIGHT¶
| April 2023 | Kernel Hackers Manual 2.6. |