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SubjectRe: [PATCH] PCI hotplug changes for 2.5.63
From
Date
ChangeSet 1.1022.1.11, 2003/02/24 16:31:00-08:00, greg@kroah.com

[PATCH] ACPI PCI hotplug: convert to use pci_remove_bus_device()

Also got rid of some unneeded bus walking on device init and shutdown.


diff -Nru a/drivers/hotplug/acpiphp_pci.c b/drivers/hotplug/acpiphp_pci.c
--- a/drivers/hotplug/acpiphp_pci.c Mon Feb 24 17:15:19 2003
+++ b/drivers/hotplug/acpiphp_pci.c Mon Feb 24 17:15:19 2003
@@ -194,92 +194,6 @@
return 0;
}

-
-/* enable pci_dev */
-static int configure_pci_dev (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
-{
- struct acpiphp_func *func;
- struct acpiphp_bridge *bridge;
- struct pci_dev *dev;
-
- func = (struct acpiphp_func *)wrapped_dev->data;
- bridge = (struct acpiphp_bridge *)wrapped_bus->data;
- dev = wrapped_dev->dev;
-
- /* TBD: support PCI-to-PCI bridge case */
- if (!func || !bridge)
- return 0;
-
- //pci_proc_attach_device(dev);
- //pci_announce_device_to_drivers(dev);
- info("Device %s configured\n", dev->slot_name);
-
- return 0;
-}
-
-/* remove device driver */
-static int unconfigure_pci_dev_driver (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
-{
- struct pci_dev *dev = wrapped_dev->dev;
-
- dbg("attempting removal of driver for device %s\n", dev->slot_name);
-
- /* Now, remove the Linux Driver Representation */
- if (dev->driver) {
- if (dev->driver->remove) {
- dev->driver->remove(dev);
- dbg("driver was properly removed\n");
- }
- dev->driver = NULL;
- }
-
- return (pci_dev_driver(dev) != NULL);
-}
-
-
-/* remove pci_dev itself from system */
-static int unconfigure_pci_dev (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
-{
- struct pci_dev *dev = wrapped_dev->dev;
-
- /* Now, remove the Linux Representation */
- if (dev) {
- if (pci_remove_device_safe(dev) == 0) {
- info("Device %s removed\n", dev->slot_name);
- kfree(dev); /* Now, remove */
- } else {
- return -1; /* problems while freeing, abort visitation */
- }
- }
-
- return 0;
-}
-
-
-/* remove pci_bus itself from system */
-static int unconfigure_pci_bus (struct pci_bus_wrapped *wrapped_bus, struct pci_dev_wrapped *wrapped_dev)
-{
- struct pci_bus *bus = wrapped_bus->bus;
-
-#ifdef CONFIG_PROC_FS
- /* Now, remove the Linux Representation */
- if (bus->procdir) {
- pci_proc_detach_bus(bus);
- }
-#endif
- /* the cleanup code should live in the kernel ... */
- bus->self->subordinate = NULL;
- /* unlink from parent bus */
- list_del(&bus->node);
-
- /* Now, remove */
- if (bus)
- kfree(bus);
-
- return 0;
-}
-
-
/* detect_used_resource - subtract resource under dev from bridge */
static int detect_used_resource (struct acpiphp_bridge *bridge, struct pci_dev *dev)
{
@@ -551,22 +465,6 @@
return retval;
}

-
-/* for pci_visit_dev() */
-static struct pci_visit configure_functions = {
- .post_visit_pci_dev = configure_pci_dev
-};
-
-static struct pci_visit unconfigure_functions_phase1 = {
- .post_visit_pci_dev = unconfigure_pci_dev_driver
-};
-
-static struct pci_visit unconfigure_functions_phase2 = {
- .post_visit_pci_bus = unconfigure_pci_bus,
- .post_visit_pci_dev = unconfigure_pci_dev
-};
-
-
/**
* acpiphp_configure_function - configure PCI function
* @func: function to be configured
@@ -577,33 +475,10 @@
*/
int acpiphp_configure_function (struct acpiphp_func *func)
{
- int retval = 0;
- struct pci_dev_wrapped wrapped_dev;
- struct pci_bus_wrapped wrapped_bus;
- struct acpiphp_bridge *bridge;
-
- /* if pci_dev is NULL, ignore it */
- if (!func->pci_dev)
- goto err_exit;
-
- bridge = func->slot->bridge;
-
- memset(&wrapped_dev, 0, sizeof(struct pci_dev_wrapped));
- memset(&wrapped_bus, 0, sizeof(struct pci_bus_wrapped));
- wrapped_dev.dev = func->pci_dev;
- wrapped_dev.data = func;
- wrapped_bus.bus = bridge->pci_bus;
- wrapped_bus.data = bridge;
-
- retval = pci_visit_dev(&configure_functions, &wrapped_dev, &wrapped_bus);
- if (retval)
- goto err_exit;
-
- err_exit:
- return retval;
+ /* all handled by the pci core now */
+ return 0;
}

-
/**
* acpiphp_unconfigure_function - unconfigure PCI function
* @func: function to be unconfigured
@@ -612,28 +487,13 @@
int acpiphp_unconfigure_function (struct acpiphp_func *func)
{
struct acpiphp_bridge *bridge;
- struct pci_dev_wrapped wrapped_dev;
- struct pci_bus_wrapped wrapped_bus;
int retval = 0;

/* if pci_dev is NULL, ignore it */
if (!func->pci_dev)
goto err_exit;

- memset(&wrapped_dev, 0, sizeof(struct pci_dev_wrapped));
- memset(&wrapped_bus, 0, sizeof(struct pci_bus_wrapped));
- wrapped_dev.dev = func->pci_dev;
- //wrapped_dev.data = func;
- wrapped_bus.bus = func->slot->bridge->pci_bus;
- //wrapped_bus.data = func->slot->bridge;
-
- retval = pci_visit_dev(&unconfigure_functions_phase1, &wrapped_dev, &wrapped_bus);
- if (retval)
- goto err_exit;
-
- retval = pci_visit_dev(&unconfigure_functions_phase2, &wrapped_dev, &wrapped_bus);
- if (retval)
- goto err_exit;
+ pci_remove_bus_device(func->pci_dev);

/* free all resources */
bridge = func->slot->bridge;
-
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