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authorJacob Pan <jacob.jun.pan@linux.intel.com>2010-05-14 14:41:14 -0700
committerH. Peter Anvin <hpa@linux.intel.com>2010-05-16 22:45:36 -0700
commite4af4268a34d8cd28c46a03161fc017cbd2db887 (patch)
treecc07341098ee5e12b235da9af44b9d793ac01c06
parent2b107d93635616db0c3f893c8cc2e6d5cd8d77b2 (diff)
downloadlinux-2.6.34-ux500-e4af4268a34d8cd28c46a03161fc017cbd2db887.tar.gz
x86, mrst, pci: return 0 for non-present pci bars
Moorestown PCI code has special handling of devices with fixed BARs. In case of BAR sizing writes, we need to update the fake PCI MMCFG space with real size decode value. When a BAR is not present, we need to return 0 instead of ~0. ~0 will be treated as device error per bugzilla 12006. Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> LKML-Reference: <1273873281-17489-2-git-send-email-jacob.jun.pan@linux.intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
-rw-r--r--arch/x86/pci/mrst.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/pci/mrst.c b/arch/x86/pci/mrst.c
index 8bf2fcb88d0..d5c7aefe56f 100644
--- a/arch/x86/pci/mrst.c
+++ b/arch/x86/pci/mrst.c
@@ -109,7 +109,7 @@ static int pci_device_update_fixed(struct pci_bus *bus, unsigned int devfn,
decode++;
decode = ~(decode - 1);
} else {
- decode = ~0;
+ decode = 0;
}
/*