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Prevent IDE boot ops on NUMA system

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Without this patch a Opteron test system here oopses at boot with
current 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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andi Kleen 2008-02-11 01:35:20 +01:00 committed by Linus Torvalds
parent 0c0d61ca93
commit 1f07e98829
1 changed files with 1 additions and 1 deletions
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2
include/linux/ide.h
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@ -1295,7 +1295,7 @@ static inline void ide_dump_identify(u8 *id)
static inline int hwif_to_node(ide_hwif_t *hwif) static inline int hwif_to_node(ide_hwif_t *hwif)
{ {
struct pci_dev *dev = to_pci_dev(hwif->dev); 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) static inline ide_drive_t *ide_get_paired_drive(ide_drive_t *drive)