[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>

1 files changed, 6 insertions, 0 deletions

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 */