From: Aaron Lu
Hard disk may also be runtime powered off, so set can_power_off flag
for it too if condition satisfies.
Signed-off-by: Aaron Lu
---
drivers/ata/libata-acpi.c | 25 +
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c
index 64ba43d..6c8f89c 100644
--- a/drivers/ata/libata-acpi.c
+++ b/drivers/ata/libata-acpi.c
@@ -1005,7 +1005,7 @@ static void ata_acpi_add_pm_notifier(struct ata_device
*dev)
if (ACPI_FAILURE(status))
return;
- if (dev->sdev->can_power_off) {
+ if (dev->class == ATA_DEV_ATAPI && 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);
@@ -1026,7 +1026,7 @@ static void ata_acpi_remove_pm_notifier(struct ata_device
*dev)
if (ACPI_FAILURE(status))
return;
- if (dev->sdev->can_power_off) {
+ if (dev->class == ATA_DEV_ATAPI && 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);
@@ -1130,14 +1130,23 @@ static int ata_acpi_bind_device(struct ata_port *ap,
struct scsi_device *sdev,
/*
* 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
+* it means this device can be powered off runtime
*/
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;
+ if (states[ACPI_STATE_D3_HOT].flags.valid ||
+ states[ACPI_STATE_D3_COLD].flags.explicit_set) {
+ /*
+* For ODD, it needs to support device attention or
+* it can't be powered up back by user
+*/
+ if (ata_dev->class == ATA_DEV_ATAPI &&
+ ata_dev->flags & ATA_DFLAG_DA)
+ sdev->can_power_off = 1;
+
+ /* No requirement for hard disk */
+ if (ata_dev->class == ATA_DEV_ATA)
+ sdev->can_power_off = 1;
+ }
return 0;
}
--
1.7.11.3
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
