If ATA device supports "Device Attention", then tell scsi layer that
the device supports runtime power off.
Acked-by: Aaron Lu <aaron.lu@xxxxxxx>
Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
---
drivers/ata/libata-scsi.c | 2 ++
include/scsi/scsi_device.h | 1 +
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 231c3ec..0bfbe41 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3445,6 +3445,8 @@ void ata_scsi_scan_host(struct ata_port *ap, int sync)
dev->sdev = sdev;
scsi_device_put(sdev);
ata_acpi_bind(dev);
+ if (dev->flags & ATA_DFLAG_DA)
+ sdev->power_off = 1;
} else {
dev->sdev = NULL;
}
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 77273f2..0f69612 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -151,6 +151,7 @@ struct scsi_device {
unsigned no_read_disc_info:1; /* Avoid READ_DISC_INFO cmds */
unsigned no_read_capacity_16:1; /* Avoid READ_CAPACITY_16 cmds */
unsigned is_visible:1; /* is the device visible in sysfs */
+ unsigned power_off:1; /* Device supports runtime power off */
DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */
struct list_head event_list; /* asserted events */
--
1.7.2.5
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