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| author | Ingo Molnar <mingo@kernel.org> | 2015-02-26 14:24:50 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-26 14:24:50 +0300 |
| commit | e9e4e44309f866b115d08ab4a54834008c50a8a4 (patch) | |
| tree | ae9f91e682a4d6592ef263f30a4a0b1a862b7987 /arch/x86/pci/xen.c | |
| parent | 8a26ce4e544659256349551283414df504889a59 (diff) | |
| parent | c517d838eb7d07bbe9507871fab3931deccff539 (diff) | |
| download | linux-e9e4e44309f866b115d08ab4a54834008c50a8a4.tar.xz | |
Merge tag 'v4.0-rc1' into perf/core, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/pci/xen.c')
| -rw-r--r-- | arch/x86/pci/xen.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/pci/xen.c b/arch/x86/pci/xen.c index 9098d880c476..d22f4b5bbc04 100644 --- a/arch/x86/pci/xen.c +++ b/arch/x86/pci/xen.c @@ -298,12 +298,16 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) map_irq.entry_nr = nvec; } else if (type == PCI_CAP_ID_MSIX) { int pos; + unsigned long flags; u32 table_offset, bir; pos = dev->msix_cap; pci_read_config_dword(dev, pos + PCI_MSIX_TABLE, &table_offset); bir = (u8)(table_offset & PCI_MSIX_TABLE_BIR); + flags = pci_resource_flags(dev, bir); + if (!flags || (flags & IORESOURCE_UNSET)) + return -EINVAL; map_irq.table_base = pci_resource_start(dev, bir); map_irq.entry_nr = msidesc->msi_attrib.entry_nr; |