x86/PCI: MMCONFIG: add resource to struct pci_mmcfg_region

This patch adds a resource and corresponding name to the MMCONFIG
structure.  This makes allocation simpler (we can allocate the
resource and name at the same time we allocate the pci_mmcfg_region),
and gives us a way to hang onto the resource after inserting it.
This will be needed so we can release and free it when hot-removing
a host bridge.

Reviewed-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/x86/include/asm/pci_x86.h b/arch/x86/include/asm/pci_x86.h
index a752d618f196..a6d42c10b017 100644
--- a/arch/x86/include/asm/pci_x86.h
+++ b/arch/x86/include/asm/pci_x86.h
@@ -118,11 +118,16 @@ extern int __init pcibios_init(void);
 
 /* pci-mmconfig.c */
 
+/* "PCI MMCONFIG %04x [bus %02x-%02x]" */
+#define PCI_MMCFG_RESOURCE_NAME_LEN (22 + 4 + 2 + 2)
+
 struct pci_mmcfg_region {
+        struct resource res;
         u64 address;
         u16 segment;
         u8 start_bus;
         u8 end_bus;
+        char name[PCI_MMCFG_RESOURCE_NAME_LEN];
 };
 
 extern int __init pci_mmcfg_arch_init(void);