[PATCH 3.16.y-ckt 040/130] PCI: Restore PCI_MSIX_FLAGS_BIRMASK definition

From: Luis Henriques
Date: Fri Sep 04 2015 - 09:47:05 EST

3.16.7-ckt17 -stable review patch. If anyone has any objections, please let me know.


From: "Michael S. Tsirkin" <mst@xxxxxxxxxx>

commit c9ddbac9c89110f77cb0fa07e634aaf1194899aa upstream.

09a2c73ddfc7 ("PCI: Remove unused PCI_MSIX_FLAGS_BIRMASK definition")
removed PCI_MSIX_FLAGS_BIRMASK from an exported header because it was
unused in the kernel. But that breaks user programs that were using it
(QEMU in particular).

Restore the PCI_MSIX_FLAGS_BIRMASK definition.

[bhelgaas: changelog]
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
include/uapi/linux/pci_regs.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 30db069bce62..788c5aa055d7 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -319,6 +319,7 @@
#define PCI_MSIX_PBA 8 /* Pending Bit Array offset */
#define PCI_MSIX_PBA_BIR 0x00000007 /* BAR index */
#define PCI_MSIX_PBA_OFFSET 0xfffffff8 /* Offset into specified BAR */
+#define PCI_MSIX_FLAGS_BIRMASK PCI_MSIX_PBA_BIR /* deprecated */
#define PCI_CAP_MSIX_SIZEOF 12 /* size of MSIX registers */

/* MSI-X Table entry format */
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