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-rw-r--r--drivers/ata/libata-acpi.c71
-rw-r--r--drivers/ata/libata-zpodd.c34
2 files changed, 34 insertions, 71 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index ef01ac07502..446b4e761af 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -974,57 +974,6 @@ void ata_acpi_on_disable(struct ata_device *dev)
ata_acpi_clear_gtf(dev);
}
-static void ata_acpi_wake_dev(acpi_handle handle, u32 event, void *context)
-{
- struct ata_device *ata_dev = context;
-
- if (event == ACPI_NOTIFY_DEVICE_WAKE && ata_dev &&
- pm_runtime_suspended(&ata_dev->sdev->sdev_gendev))
- scsi_autopm_get_device(ata_dev->sdev);
-}
-
-static void ata_acpi_add_pm_notifier(struct ata_device *dev)
-{
- struct acpi_device *acpi_dev;
- acpi_handle handle;
- acpi_status status;
-
- handle = ata_dev_acpi_handle(dev);
- if (!handle)
- return;
-
- status = acpi_bus_get_device(handle, &acpi_dev);
- if (ACPI_FAILURE(status))
- return;
-
- if (dev->sdev->can_power_off) {
- acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
- ata_acpi_wake_dev, dev);
- device_set_run_wake(&dev->sdev->sdev_gendev, true);
- }
-}
-
-static void ata_acpi_remove_pm_notifier(struct ata_device *dev)
-{
- struct acpi_device *acpi_dev;
- acpi_handle handle;
- acpi_status status;
-
- handle = ata_dev_acpi_handle(dev);
- if (!handle)
- return;
-
- status = acpi_bus_get_device(handle, &acpi_dev);
- if (ACPI_FAILURE(status))
- return;
-
- if (dev->sdev->can_power_off) {
- device_set_run_wake(&dev->sdev->sdev_gendev, false);
- acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
- ata_acpi_wake_dev);
- }
-}
-
static void ata_acpi_register_power_resource(struct ata_device *dev)
{
struct scsi_device *sdev = dev->sdev;
@@ -1057,13 +1006,11 @@ static void ata_acpi_unregister_power_resource(struct ata_device *dev)
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);
}
@@ -1105,9 +1052,6 @@ static int ata_acpi_bind_device(struct ata_port *ap, struct scsi_device *sdev,
acpi_handle *handle)
{
struct ata_device *ata_dev;
- acpi_status status;
- struct acpi_device *acpi_dev;
- struct acpi_device_power_state *states;
if (ap->flags & ATA_FLAG_ACPI_SATA) {
if (!sata_pmp_attached(ap))
@@ -1124,21 +1068,6 @@ static int ata_acpi_bind_device(struct ata_port *ap, struct scsi_device *sdev,
if (!*handle)
return -ENODEV;
- status = acpi_bus_get_device(*handle, &acpi_dev);
- if (ACPI_FAILURE(status))
- return 0;
-
- /*
- * If firmware has _PS3 or _PR3 for this device,
- * and this ata ODD device support device attention,
- * it means this device can be powered off
- */
- states = acpi_dev->power.states;
- if ((states[ACPI_STATE_D3_HOT].flags.valid ||
- states[ACPI_STATE_D3_COLD].flags.explicit_set) &&
- ata_dev->flags & ATA_DFLAG_DA)
- sdev->can_power_off = 1;
-
return 0;
}
diff --git a/drivers/ata/libata-zpodd.c b/drivers/ata/libata-zpodd.c
index 27eed2f09a8..9a0d90d09d8 100644
--- a/drivers/ata/libata-zpodd.c
+++ b/drivers/ata/libata-zpodd.c
@@ -1,5 +1,7 @@
#include <linux/libata.h>
#include <linux/cdrom.h>
+#include <linux/pm_runtime.h>
+#include <scsi/scsi_device.h>
#include "libata.h"
@@ -12,6 +14,10 @@ enum odd_mech_type {
struct zpodd {
enum odd_mech_type mech_type; /* init during probe, RO afterwards */
struct ata_device *dev;
+
+ /* The following fields are synchronized by PM core. */
+ bool from_notify; /* resumed as a result of
+ * acpi wake notification */
};
/* Per the spec, only slot type and drawer type ODD can be supported */
@@ -68,6 +74,32 @@ static bool odd_can_poweroff(struct ata_device *ata_dev)
return acpi_device_can_poweroff(acpi_dev);
}
+static void zpodd_wake_dev(acpi_handle handle, u32 event, void *context)
+{
+ struct ata_device *ata_dev = context;
+ struct zpodd *zpodd = ata_dev->zpodd;
+ struct device *dev = &ata_dev->sdev->sdev_gendev;
+
+ if (event == ACPI_NOTIFY_DEVICE_WAKE && ata_dev &&
+ pm_runtime_suspended(dev)) {
+ zpodd->from_notify = true;
+ pm_runtime_resume(dev);
+ }
+}
+
+static void ata_acpi_add_pm_notifier(struct ata_device *dev)
+{
+ acpi_handle handle = ata_dev_acpi_handle(dev);
+ acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+ zpodd_wake_dev, dev);
+}
+
+static void ata_acpi_remove_pm_notifier(struct ata_device *dev)
+{
+ acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->sdev->sdev_gendev);
+ acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY, zpodd_wake_dev);
+}
+
void zpodd_init(struct ata_device *dev)
{
enum odd_mech_type mech_type;
@@ -89,12 +121,14 @@ void zpodd_init(struct ata_device *dev)
zpodd->mech_type = mech_type;
+ ata_acpi_add_pm_notifier(dev);
zpodd->dev = dev;
dev->zpodd = zpodd;
}
void zpodd_exit(struct ata_device *dev)
{
+ ata_acpi_remove_pm_notifier(dev);
kfree(dev->zpodd);
dev->zpodd = NULL;
}