ide: fix pmac breakage

Fix breakage added in the IDE devel tree.

Add header, then fix

drivers/ide/ppc/pmac.c: In function `pmac_ide_setup_dma':
drivers/ide/ppc/pmac.c:2044: warning: assignment from incompatible pointer type
drivers/ide/ppc/pmac.c: In function `pmac_ide_dma_host_on':
drivers/ide/ppc/pmac.c:1989: warning: control reaches end of non-void function
include/linux/pci.h: In function `pmac_ide_init':
drivers/ide/ppc/pmac.c:1563: warning: ignoring return value of `pci_register_driver', declared with attribute warn_unused_result

Then add some apparently-long-missing error handling.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

2 files changed, 26 insertions, 11 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index b3c0818c5c6c..25487691c9f1 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1840,8 +1840,8 @@ static void __init probe_for_hwifs (void)
 #endif /* CONFIG_BLK_DEV_CMD640 */
 #ifdef CONFIG_BLK_DEV_IDE_PMAC
         {
-                extern void pmac_ide_probe(void);
-                pmac_ide_probe();
+                extern int pmac_ide_probe(void);
+                (void)pmac_ide_probe();
         }
 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
 #ifdef CONFIG_BLK_DEV_GAYLE
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 395d35253d5d..071a030ec26e 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -48,7 +48,7 @@
 #include <asm/mediabay.h>
 #endif
 
-#include "ide-timing.h"
+#include "../ide-timing.h"
 
 #undef IDE_PMAC_DEBUG
 
@@ -1551,19 +1551,34 @@ static struct pci_driver pmac_ide_pci_driver = {
 };
 MODULE_DEVICE_TABLE(pci, pmac_ide_pci_match);
 
-void __init
-pmac_ide_probe(void)
+int __init pmac_ide_probe(void)
 {
+        int error;
+
         if (!machine_is(powermac))
-                return;
+                return -ENODEV;
 
 #ifdef CONFIG_BLK_DEV_IDE_PMAC_ATA100FIRST
-        pci_register_driver(&pmac_ide_pci_driver);
-        macio_register_driver(&pmac_ide_macio_driver);
+        error = pci_register_driver(&pmac_ide_pci_driver);
+        if (error)
+                goto out;
+        error = macio_register_driver(&pmac_ide_macio_driver);
+        if (error) {
+                pci_unregister_driver(&pmac_ide_pci_driver);
+                goto out;
+        }
 #else
-        macio_register_driver(&pmac_ide_macio_driver);
-        pci_register_driver(&pmac_ide_pci_driver);
+        error = macio_register_driver(&pmac_ide_macio_driver);
+        if (error)
+                goto out;
+        error = pci_register_driver(&pmac_ide_pci_driver);
+        if (error) {
+                macio_unregister_driver(&pmac_ide_macio_driver);
+                goto out;
+        }
 #endif
+out:
+        return error;
 }
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PMAC
@@ -1983,7 +1998,7 @@ static void pmac_ide_dma_host_off(ide_drive_t *drive)
 {
 }
 
-static int pmac_ide_dma_host_on(ide_drive_t *drive)
+static void pmac_ide_dma_host_on(ide_drive_t *drive)
 {
 }