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Commit 4be6bfe2 authored by Bjorn Helgaas's avatar Bjorn Helgaas Committed by Konrad Rzeszutek Wilk
Browse files

xen/pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK 



PCI_MSIX_FLAGS_BIRMASK is mis-named because the BIR mask is in the
Table Offset register, not the flags ("Message Control" per spec)
register.

Acked-by: default avatarJan Beulich <jbeulich@suse.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
parent 934f585e

arch/x86/pci/xen.c

+1 −1
Original line number Diff line number Diff line
@@ -299,7 +299,7 @@ static int xen_initdom_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) 


			pci_read_config_dword(dev, pos + PCI_MSIX_TABLE,

					      &table_offset);

			bir = (u8)(table_offset & PCI_MSIX_FLAGS_BIRMASK);

			bir = (u8)(table_offset & PCI_MSIX_TABLE_BIR);



			map_irq.table_base = pci_resource_start(dev, bir);

			map_irq.entry_nr = msidesc->msi_attrib.entry_nr;