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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-02-29 14:58:03 +1100
committerPaul Mackerras <paulus@samba.org>2008-03-13 10:09:27 +1100
commit7f172890a8f8744c4005c267ae9e228411ab173f (patch)
treed4f5b06cf762d3ec2c61021d36f88e6e0564b199 /arch/powerpc
parent595be948cce574ff2d5dde5d0426a636a4363c70 (diff)
downloadop-kernel-dev-7f172890a8f8744c4005c267ae9e228411ab173f.zip
op-kernel-dev-7f172890a8f8744c4005c267ae9e228411ab173f.tar.gz
[POWERPC] Fix bogus test for unassigned PCI resources
A bogus test for unassigned resources that came from our 32-bit PCI code ended up being "merged" by my previous patch series, breaking some 64-bit setups where devices have legal resources ending at 0xffffffff. This fixes it by completely changing the test. We now test for res->start == 0, as the generic code expects, and we also only do so on platforms that don't have the PPC_PCI_PROBE_ONLY flag set, as there are cases of pSeries and iSeries where it could be a valid value and those can't reassign devices. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kernel/pci-common.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 980fe32..89c83cc 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -748,7 +748,13 @@ static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
struct resource *res = dev->resource + i;
if (!res->flags)
continue;
- if (res->end == 0xffffffff) {
+ /* On platforms that have PPC_PCI_PROBE_ONLY set, we don't
+ * consider 0 as an unassigned BAR value. It's technically
+ * a valid value, but linux doesn't like it... so when we can
+ * re-assign things, we do so, but if we can't, we keep it
+ * around and hope for the best...
+ */
+ if (res->start == 0 && !(ppc_pci_flags & PPC_PCI_PROBE_ONLY)) {
pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] is unassigned\n",
pci_name(dev), i,
(unsigned long long)res->start,
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