| Message ID | 1323048028-10421-2-git-send-email-ming.m.lin@intel.com |
|---|---|
| State | Not Applicable |
| Delegated to: | David Miller |
| Headers | show |
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@kernel.org> > Signed-off-by: Lin Ming<ming.m.lin@intel.com> > --- > drivers/ata/libata-scsi.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) applied 1-6, thanks -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 2a5412e..7ae1e77 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3398,7 +3398,7 @@ 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; }
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> --- drivers/ata/libata-scsi.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)