[PATCH V8 8/9] arm64, pci, acpi: Provide ACPI-specific prerequisites for PCI bus enumeration.

Tomasz Nowicki
2016-05-30T15:15:23Z

ACPI requires to run acpi_pci_{add|remove}_bus while new PCI bus is created.
This allows to do some ACPI-specific additional configuration, like
PCI hotplug slot enumeration. In order to fulfill these requirements,
we implement arch-specific pcibios_{add|remove}_bus calls
and call acpi_pci_{add|remove}_bus from there.

Signed-off-by: Tomasz Nowicki <tn@semihalf.com>
---
arch/arm64/kernel/pci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/arch/arm64/kernel/pci.c b/arch/arm64/kernel/pci.c
index 336deef..3663be1 100644
--- a/arch/arm64/kernel/pci.c
+++ b/arch/arm64/kernel/pci.c
@@ -17,6 +17,7 @@
#include <linux/mm.h>
#include <linux/of_pci.h>
#include <linux/of_platform.h>
+#include <linux/pci-acpi.h>
#include <linux/slab.h>

/*
@@ -96,4 +97,15 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root)
/* TODO: Should be revisited when implementing PCI on ACPI */
return NULL;
}
+
+void pcibios_add_bus(struct pci_bus *bus)
+{
+ acpi_pci_add_bus(bus);
+}
+
+void pcibios_remove_bus(struct pci_bus *bus)
+{
+ acpi_pci_remove_bus(bus);
+}
+
#endif
--
1.9.1