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Subject[PATCH v2 1/4] ata: make ata port as parent device of scsi host
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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.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
---
drivers/ata/libata-scsi.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 72a9770..4c2a524 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3394,7 +3394,7 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht)
*/
shost->max_host_blocked = 1;

- rc = scsi_add_host(ap->scsi_host, ap->host->dev);
+ rc = scsi_add_host(ap->scsi_host, &ap->tdev);
if (rc)
goto err_add;
}
--
1.7.2.5


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