Without this patch a Opteron test system here oopses at boot with currentg git.
Calling to_pci_dev() on a NULL pointer gives a negative value so the following NULL
pointer check never triggers and then an illegal address is referenced. Check the
unadjusted original device pointer for NULL instead.
Signed-off-by: Andi Kleen <ak@suse.de>
Index: linux/include/linux/ide.h
===================================================================
--- linux.orig/include/linux/ide.h
+++ linux/include/linux/ide.h
@@ -1294,7 +1294,7 @@ static inline void ide_dump_identify(u8
static inline int hwif_to_node(ide_hwif_t *hwif)
{
struct pci_dev *dev = to_pci_dev(hwif->dev);
- return dev ? pcibus_to_node(dev->bus) : -1;
+ return hwif->dev ? pcibus_to_node(dev->bus) : -1;
}
static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)
--
