libata: update libata core layer to use devres
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>
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 649dfa5..d725683 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1784,37 +1784,24 @@
return rc;
}
-static void ahci_remove_one (struct pci_dev *pdev)
+static void ahci_remove_one(struct pci_dev *pdev)
{
struct device *dev = pci_dev_to_dev(pdev);
struct ata_host *host = dev_get_drvdata(dev);
struct ahci_host_priv *hpriv = host->private_data;
- unsigned int i;
- int have_msi;
- ata_host_detach(host);
+ ata_host_remove(host);
- have_msi = hpriv->flags & AHCI_FLAG_MSI;
- free_irq(host->irq, host);
-
- for (i = 0; i < host->n_ports; i++) {
- struct ata_port *ap = host->ports[i];
-
- ata_scsi_release(ap->scsi_host);
- scsi_host_put(ap->scsi_host);
- }
-
- kfree(hpriv);
pci_iounmap(pdev, host->mmio_base);
- kfree(host);
- if (have_msi)
+ if (hpriv->flags & AHCI_FLAG_MSI)
pci_disable_msi(pdev);
else
pci_intx(pdev, 0);
pci_release_regions(pdev);
pci_disable_device(pdev);
dev_set_drvdata(dev, NULL);
+ kfree(hpriv);
}
static int __init ahci_init(void)