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| author | Lin Ming <ming.m.lin@intel.com> | 2011-12-05 09:20:23 +0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2012-01-08 19:14:57 -0500 |
| commit | 9a6d6a2ddabbd32c07f6a38b659e5f3db319fa5a (patch) | |
| tree | 4501e80654ad8adb928ec575f2cd866c15ba87db /Documentation | |
| parent | 7faa33da9b7add01db9f1ad92c6a5d9145e940a7 (diff) | |
ata: make ata port as parent device of scsi host
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@kernel.org>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions