lkml.org 
[lkml]   [2012]   [Mar]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH v3 5/7] libata: tell scsi layer device supports runtime power off
    Date
    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


    \
     
     \ /
      Last update: 2012-03-28 08:25    [W:4.136 / U:0.012 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site