libata-acpi: add ata port runtime D3Cold support
ATA port may support runtime D3Cold state, for example, Zero-power ODD case.
This patch adds wakeup notifier and enable/disable run_wake during
supend/resume.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 88561029..1784cb3 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -795,6 +795,7 @@
*d_min_p = d_min;
return d_max;
}
+EXPORT_SYMBOL(acpi_pm_device_sleep_state);
#endif /* CONFIG_PM */
#ifdef CONFIG_PM_SLEEP
@@ -831,6 +832,7 @@
return 0;
}
+EXPORT_SYMBOL(acpi_pm_device_run_wake);
/**
* acpi_pm_device_sleep_wake - enable or disable the system wake-up