Messages in this thread Patch in this message | | | From | Lin Ming <> | Subject | [PATCH v3 5/7] libata: tell scsi layer device supports runtime power off | Date | Wed, 28 Mar 2012 14:22:00 +0800 |
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If ATA device supports "Device Attention", then tell scsi layer that the device supports runtime power off.
Acked-by: Aaron Lu <aaron.lu@amd.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> --- 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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