ide: add ide_deprecated_find_port() helper

* Factor out code for finding ide_hwifs[] slot from ide_register_hw()
  to ide_deprecated_find_port().

* Convert bast-ide, ide-cs and delkin_cb host drivers to use ide_device_add()
  instead of ide_register_hw() (while at it drop doing "ide_unregister()" loop
  which tries to unregister _all_ IDE interfaces if useable ide_hwifs[] slot
  cannot be find).

This patch leaves us with only two ide_register_hw() users:
- drivers/macintosh/mediabay.c
- drivers/ide/ide.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 27 insertions, 6 deletions

diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index 4e9ebaa79624..15670801a67f 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -51,6 +51,7 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
         ide_hwif_t *hwif = NULL;
         ide_drive_t *drive;
         int i, rc;
+        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         rc = pci_enable_device(dev);
         if (rc) {
@@ -77,12 +78,27 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
         hw.irq = dev->irq;
         hw.chipset = ide_pci;           /* this enables IRQ sharing */
 
-        rc = ide_register_hw(&hw, &ide_undecoded_slave, &hwif);
-        if (rc < 0) {
-                printk(KERN_ERR "delkin_cb: ide_register_hw failed (%d)\n", rc);
-                pci_disable_device(dev);
-                return -ENODEV;
-        }
+        hwif = ide_deprecated_find_port(hw.io_ports[IDE_DATA_OFFSET]);
+        if (hwif == NULL)
+                goto out_disable;
+
+        i = hwif->index;
+
+        if (hwif->present)
+                ide_unregister(i, 0, 1);
+        else if (!hwif->hold)
+                ide_init_port_data(hwif, i);
+
+        ide_init_port_hw(hwif, &hw);
+        hwif->quirkproc = &ide_undecoded_slave;
+
+        idx[0] = i;
+
+        ide_device_add(idx, NULL);
+
+        if (!hwif->present)
+                goto out_disable;
+
         pci_set_drvdata(dev, hwif);
         hwif->dev = &dev->dev;
         drive = &hwif->drives[0];
@@ -91,6 +107,11 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
                 drive->unmask   = 1;
         }
         return 0;
+
+out_disable:
+        printk(KERN_ERR "delkin_cb: no IDE devices found\n");
+        pci_disable_device(dev);
+        return -ENODEV;
 }
 
 static void