[tip:x86/mrst] x86, mrst, pci: return 0 for non-present pci bars
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From: tip-bot for Jacob Pan on 17 May 2010 02:40 Commit-ID: e4af4268a34d8cd28c46a03161fc017cbd2db887 Gitweb: http://git.kernel.org/tip/e4af4268a34d8cd28c46a03161fc017cbd2db887 Author: Jacob Pan <jacob.jun.pan(a)linux.intel.com> AuthorDate: Fri, 14 May 2010 14:41:14 -0700 Committer: H. Peter Anvin <hpa(a)linux.intel.com> CommitDate: Sun, 16 May 2010 22:45:36 -0700 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(a)linux.intel.com> LKML-Reference: <1273873281-17489-2-git-send-email-jacob.jun.pan(a)linux.intel.com> Acked-by: Jesse Barnes <jbarnes(a)virtuousgeek.org> Acked-by: Thomas Gleixner <tglx(a)linutronix.de> Signed-off-by: H. Peter Anvin <hpa(a)linux.intel.com> --- arch/x86/pci/mrst.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86/pci/mrst.c b/arch/x86/pci/mrst.c index 8bf2fcb..d5c7aef 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; } /* -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |