ide: add struct ide_host (take 3)

* Add struct ide_host which keeps pointers to host's ports.

* Add ide_host_alloc[_all]() and ide_host_remove() helpers.

* Pass 'struct ide_host *host' instead of 'u8 *idx' to
  ide_device_add[_all]() and rename it to ide_host_register[_all]().

* Convert host drivers and core code to use struct ide_host.

* Remove no longer needed ide_find_port().

* Make ide_find_port_slot() static.

* Unexport ide_unregister().

v2:
* Add missing 'struct ide_host *host' to macide.c.

v3:
* Fix build problem in pmac.c (s/ide_alloc_host/ide_host_alloc/)
  (Noticed by Stephen Rothwell).

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

1 files changed, 4 insertions, 8 deletions

diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index e9831bbd988a..9efd7a86db45 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -28,10 +28,9 @@
 
 static int __init ide_arm_init(void)
 {
-        ide_hwif_t *hwif;
+        struct ide_host *host;
         unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
         hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
-        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         if (!request_region(base, 8, DRV_NAME)) {
                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
@@ -51,12 +50,9 @@ static int __init ide_arm_init(void)
         hw.irq = IDE_ARM_IRQ;
         hw.chipset = ide_generic;
 
-        hwif = ide_find_port();
-        if (hwif) {
-                idx[0] = hwif->index;
-
-                ide_device_add(idx, NULL, hws);
-        }
+        host = ide_host_alloc(NULL, hws);
+        if (host)
+                ide_host_register(host, NULL, hws);
 
         return 0;
 }