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Subject[patch] fix 64-vbit prefetchable memory resource BARs

Since patch 6ac665c63dcac8fcec534a1d224ecbb8b867ad59
my infiniband controller hasn't worked. This is because it has
64-bit prefetchable memory, which was mistakenly being taken to be
32-bit memory. The resource flags in this case are

This patch checks only for the PCI_BASE_ADDRESS_MEM_TYPE_64 bit; thus
whether the region is prefetchable or not is ignored. This fixes my

Signed-off-by: Peter Chubb <>

Index: linux-2.6-git/drivers/pci/probe.c
--- linux-2.6-git.orig/drivers/pci/probe.c 2008-10-13 10:49:46.012798465 +1100
+++ linux-2.6-git/drivers/pci/probe.c 2008-10-13 11:35:43.016329442 +1100
@@ -219,7 +219,7 @@

res->flags = bar & ~PCI_BASE_ADDRESS_MEM_MASK;

- if (res->flags == PCI_BASE_ADDRESS_MEM_TYPE_64)
+ if (res->flags & PCI_BASE_ADDRESS_MEM_TYPE_64)
return pci_bar_mem64;
return pci_bar_mem32;

Dr Peter Chubb peterc AT ERTOS within National ICT Australia

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