[PATCH] Fix ide-disk.c oops caused by hwif == NULL

1. Move hwif_to_node to ide.h

2. Use hwif_to_node in ide-disk.c

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

3 files changed, 7 insertions, 10 deletions

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index f9c1acb4ed6a..c9d3a00a3c0c 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -1220,7 +1220,7 @@ static int ide_disk_probe(struct device *dev)
                 goto failed;
 
         g = alloc_disk_node(1 << PARTN_BITS,
-                        pcibus_to_node(drive->hwif->pci_dev->bus));
+                        hwif_to_node(drive->hwif));
         if (!g)
                 goto out_free_idkp;
 
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 94daf40ae323..c1128ae5cd2f 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -960,15 +960,6 @@ static void save_match(ide_hwif_t *hwif, ide_hwif_t *new, ide_hwif_t **match)
 }
 #endif /* MAX_HWIFS > 1 */
 
-static inline int hwif_to_node(ide_hwif_t *hwif)
-{
-        if (hwif->pci_dev)
-                return pcibus_to_node(hwif->pci_dev->bus);
-        else
-                /* Add ways to determine the node of other busses here */
-                return -1;
-}
-
 /*
  * init request queue
  */
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 92129078d4f3..a6dbb51ecd7b 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1501,4 +1501,10 @@ extern struct bus_type ide_bus_type;
 #define ide_id_has_flush_cache_ext(id)  \
         (((id)->cfs_enable_2 & 0x2400) == 0x2400)
 
+static inline int hwif_to_node(ide_hwif_t *hwif)
+{
+        struct pci_dev *dev = hwif->pci_dev;
+        return dev ? pcibus_to_node(dev->bus) : -1;
+}
+
 #endif /* _IDE_H */