From 4fa2649a01a4357a82dcc60ef8fb7b8c441e64ed Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 2 Apr 2012 18:31:53 -0700 Subject: [PATCH] PCI: add host bridge release support We need a hook to release host bridge resources allocated when creating root bus. Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas --- drivers/pci/host-bridge.c | 8 ++++++++ drivers/pci/probe.c | 3 ++- include/linux/pci.h | 5 +++++ 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/pci/host-bridge.c b/drivers/pci/host-bridge.c index 122df80..a68dc613 100644 --- a/drivers/pci/host-bridge.c +++ b/drivers/pci/host-bridge.c @@ -27,6 +27,14 @@ static struct pci_host_bridge *find_pci_host_bridge(struct pci_dev *dev) return to_pci_host_bridge(bus->bridge); } +void pci_set_host_bridge_release(struct pci_host_bridge *bridge, + void (*release_fn)(struct pci_host_bridge *), + void *release_data) +{ + bridge->release_fn = release_fn; + bridge->release_data = release_data; +} + static bool resource_contains(struct resource *res1, struct resource *res2) { return res1->start <= res2->start && res1->end >= res2->end; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 8d291ee..4c2f226 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1137,7 +1137,8 @@ static void pci_release_bus_bridge_dev(struct device *dev) { struct pci_host_bridge *bridge = to_pci_host_bridge(dev); - /* TODO: need to free window->res */ + if (bridge->release_fn) + bridge->release_fn(bridge); pci_free_resource_list(&bridge->windows); diff --git a/include/linux/pci.h b/include/linux/pci.h index 8f4f29d..17b7b5b 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -378,9 +378,14 @@ struct pci_host_bridge { struct device dev; struct pci_bus *bus; /* root bus */ struct list_head windows; /* pci_host_bridge_windows */ + void (*release_fn)(struct pci_host_bridge *); + void *release_data; }; #define to_pci_host_bridge(n) container_of(n, struct pci_host_bridge, dev) +void pci_set_host_bridge_release(struct pci_host_bridge *bridge, + void (*release_fn)(struct pci_host_bridge *), + void *release_data); /* * The first PCI_BRIDGE_RESOURCE_NUM PCI bus resources (those that correspond -- 2.7.4