Re: [PATCH v5 1/6] ata: make ata port as parent device of scsi host

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On 12/04/2011 08:20 PM, Lin Ming wrote:
Currently, the device tree of ata port and scsi host looks as below,

         /sys/devices/pci0000:00/0000:00:1f.2    (ahci controller)
         |-- ata1                                (ata port)
         |-- host0                               (scsi host)
            |-- target0:0:0                      (scsi target)
                |-- 0:0:0:0                      (disk)

This patch makes ata port as parent device of scsi host, then it becomes

         /sys/devices/pci0000:00/0000:00:1f.2    (ahci controller)
         |-- ata1                                (ata port)
             |-- host0                           (scsi host)
                 |-- target0:0:0                 (scsi target)
                     |-- 0:0:0:0                 (disk)

With this change, the ata port runtime PM is easier.
For example, the ata port runtime suspend will happen as,

disk suspend -->  scsi target suspend -->  scsi host suspend -->  ata port
suspend.

Acked-by: Tejun Heo<tj@xxxxxxxxxx>
Signed-off-by: Lin Ming<ming.m.lin@xxxxxxxxx>
---
  drivers/ata/libata-scsi.c |    2 +-
  1 files changed, 1 insertions(+), 1 deletions(-)

applied 1-6, thanks



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