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libata: update libata core layer to use devres

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Update libata core layer to use devres.

* ata_device_add() acquires all resources in managed mode.

* ata_host is allocated as devres associated with ata_host_release.

* Port attached status is handled as devres associated with
  ata_host_attach_release().

* Initialization failure and host removal is handedl by releasing
  devres group.

* Except for ata_scsi_release() removal, LLD interface remains the
  same.  Some functions use hacky is_managed test to support both
  managed and unmanaged devices.  These will go away once all LLDs are
  updated to use devres.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-01-20 16:00:28 +09:00
committed by Jeff Garzik
parent 0529c159db
commit f0d36efdc6
5 changed files with 107 additions and 161 deletions
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3
drivers/ata/libata-scsi.c
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@ -3305,7 +3305,8 @@ EXPORT_SYMBOL_GPL(ata_sas_port_init);
void ata_sas_port_destroy(struct ata_port *ap)
{
ap->ops->port_stop(ap);
if (ap->ops->port_stop)
ap->ops->port_stop(ap);
kfree(ap);
}
EXPORT_SYMBOL_GPL(ata_sas_port_destroy);