diff options
author | Ian Wisbon <ian.wisbon@timesys.com> | 2011-02-14 16:41:03 -0500 |
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committer | Ian Wisbon <ian.wisbon@timesys.com> | 2011-02-14 16:41:03 -0500 |
commit | 8a83780a187ba1961380814eaf9c503043345d12 (patch) | |
tree | 80f5d89cca49330e137688c72fb10c9f42dc5663 /arch/x86/kernel/pci-calgary_64.c | |
parent | 14a4057959f8ee0a2249eb2abd64fd6b1f571d98 (diff) |
Digi Release Code from del-5.6/main2.6.31-digi-201102141643
Diffstat (limited to 'arch/x86/kernel/pci-calgary_64.c')
-rw-r--r-- | arch/x86/kernel/pci-calgary_64.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index 971a3bec47a8..e6ec8a2df1c3 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -318,13 +318,15 @@ static inline struct iommu_table *find_iommu_table(struct device *dev) pdev = to_pci_dev(dev); + /* search up the device tree for an iommu */ pbus = pdev->bus; - - /* is the device behind a bridge? Look for the root bus */ - while (pbus->parent) + do { + tbl = pci_iommu(pbus); + if (tbl && tbl->it_busno == pbus->number) + break; + tbl = NULL; pbus = pbus->parent; - - tbl = pci_iommu(pbus); + } while (pbus); BUG_ON(tbl && (tbl->it_busno != pbus->number)); |