Messages in this thread Patch in this message | | | From | Lin Ming <> | Subject | [PATCH v2 1/4] ata: make ata port as parent device of scsi host | Date | Thu, 10 Nov 2011 14:22:43 +0800 |
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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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