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libata-acpi: register/unregister device to/from power resource

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Signed-off-by: Lin Ming <[email protected]>
Signed-off-by: Jeff Garzik <[email protected]>
This commit is contained in:
Lin Ming 2012-06-25 16:13:07 +08:00 • committed by Jeff Garzik
commit a606dac368
2 changed files with 34 additions and 0 deletions
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32
drivers/ata/libata-acpi.c
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@ -1025,14 +1025,46 @@ static void ata_acpi_remove_pm_notifier(struct ata_device *dev)
}
}
static void ata_acpi_register_power_resource(struct ata_device *dev)
{
struct scsi_device *sdev = dev->sdev;
acpi_handle handle;
struct device *device;
handle = ata_dev_acpi_handle(dev);
if (!handle)
return;
device = &sdev->sdev_gendev;
acpi_power_resource_register_device(device, handle);
}
static void ata_acpi_unregister_power_resource(struct ata_device *dev)
{
struct scsi_device *sdev = dev->sdev;
acpi_handle handle;
struct device *device;
handle = ata_dev_acpi_handle(dev);
if (!handle)
return;
device = &sdev->sdev_gendev;
acpi_power_resource_unregister_device(device, handle);
}
void ata_acpi_bind(struct ata_device *dev)
{
ata_acpi_add_pm_notifier(dev);
ata_acpi_register_power_resource(dev);
}
void ata_acpi_unbind(struct ata_device *dev)
{
ata_acpi_remove_pm_notifier(dev);
ata_acpi_unregister_power_resource(dev);
}
static int compat_pci_ata(struct ata_port *ap)