This patch provides a way to set the ACPI companion in PCI code.
We define acpi_pci_set_companion() to set the ACPI companion pointer and
call it from PCI core code. The function is stub for now.
Signed-off-by: Jayachandran C <jchandra@xxxxxxxxxxxx>
Signed-off-by: Tomasz Nowicki <tn@xxxxxxxxxxxx>
---
drivers/pci/probe.c | 2 ++
include/linux/pci-acpi.h | 4 ++++
2 files changed, 6 insertions(+)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8004f67..fb0b752 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -12,6 +12,7 @@
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/cpumask.h>
+#include <linux/pci-acpi.h>
#include <linux/pci-aspm.h>
#include <linux/aer.h>
#include <linux/acpi.h>
@@ -2141,6 +2142,7 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus,
bridge->dev.parent = parent;
bridge->dev.release = pci_release_host_bridge_dev;
dev_set_name(&bridge->dev, "pci%04x:%02x", pci_domain_nr(b), bus);
+ acpi_pci_set_companion(bridge);
error = pcibios_root_bridge_prepare(bridge);
if (error) {
kfree(bridge);
diff --git a/include/linux/pci-acpi.h b/include/linux/pci-acpi.h
index 09f9f02..1baa515 100644
--- a/include/linux/pci-acpi.h
+++ b/include/linux/pci-acpi.h
@@ -111,6 +111,10 @@ static inline void acpi_pci_add_bus(struct pci_bus *bus) { }
static inline void acpi_pci_remove_bus(struct pci_bus *bus) { }
#endif /* CONFIG_ACPI */
+static inline void acpi_pci_set_companion(struct pci_host_bridge *bridge)
+{
+}
+
static inline int acpi_pci_bus_domain_nr(struct pci_bus *bus)
{
return 0;
--
1.9.1
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