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alistair23-linux
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PCI: fix 64-vbit prefetchable memory resource BARs 

Since patch 6ac665c63d 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 PCI_BASE_ADDRESS_MEM_TYPE_64 |
PCI_BASE_ADDRESS_MEM_PREFETCH.

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
Infiniband.

Reviewed-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Peter Chubb <peterc@gelato.unsw.edu.au>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
hifive-unleashed-5.1
Peter Chubb 2008-10-13 11:49:04 +11:00 committed by Jesse Barnes
parent 557848c3c0
commit e354597cce
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/probe.c
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@ -217,7 +217,7 @@ static inline enum pci_bar_type decode_bar(struct resource *res, u32 bar)
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;
}