[RFC PATCH 08/10] PCI Hotplug: rename legacy_fakephp to fakephp

Alex Chiang
2009-01-28T22:02:14Z

We wanted to replace fakephp wholesale, so rename legacy_fakephp back
to fakephp. Yes, this is a silly commit, but it produces a much easier
patch to read and review.

Signed-off-by: Alex Chiang <achiang@hp.com>
---

drivers/pci/hotplug/Makefile | 2
drivers/pci/hotplug/fakephp.c | 163 ++++++++++++++++++++++++++++++++++
drivers/pci/hotplug/legacy_fakephp.c | 163 ----------------------------------
3 files changed, 164 insertions(+), 164 deletions(-)
create mode 100644 drivers/pci/hotplug/fakephp.c
delete mode 100644 drivers/pci/hotplug/legacy_fakephp.c

diff --git a/drivers/pci/hotplug/Makefile b/drivers/pci/hotplug/Makefile
index 5a86728..e31fb91 100644
--- a/drivers/pci/hotplug/Makefile
+++ b/drivers/pci/hotplug/Makefile
@@ -16,7 +16,7 @@ obj-$(CONFIG_HOTPLUG_PCI_RPA_DLPAR) += rpadlpar_io.o
obj-$(CONFIG_HOTPLUG_PCI_SGI) += sgi_hotplug.o

# Link this last so it doesn't claim devices that have a real hotplug driver
-obj-$(CONFIG_HOTPLUG_PCI_FAKE) += legacy_fakephp.o
+obj-$(CONFIG_HOTPLUG_PCI_FAKE) += fakephp.o

pci_hotplug-objs := pci_hotplug_core.o

diff --git a/drivers/pci/hotplug/fakephp.c b/drivers/pci/hotplug/fakephp.c
new file mode 100644
index 0000000..185cb67
--- /dev/null
+++ b/drivers/pci/hotplug/fakephp.c
@@ -0,0 +1,163 @@
+/* Works like the fakephp driver used to, except a little better.
+ *
+ * - It's possible to remove devices with subordinate busses.
+ * - New PCI devices that appear via any method, not just a fakephp triggered
+ * rescan, will be noticed.
+ * - Devices that are removed via any method, not just a fakephp triggered
+ * removal, will also be noticed.
+ *
+ * Uses nothing from the pci-hotplug subsystem.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/kobject.h>
+#include <linux/sysfs.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include "../pci.h"
+
+struct legacy_slot {
+ struct kobject kobj;
+ struct pci_dev *dev;
+ struct list_head list;
+};
+
+static LIST_HEAD(legacy_list);
+
+static ssize_t legacy_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
+ strcpy(buf, "1\n");
+ return 2;
+}
+
+static void remove_callback(void *data)
+{
+ pci_remove_bus_device((struct pci_dev *)data);
+}
+
+static ssize_t legacy_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t len)
+{
+ struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
+ unsigned long val;
+
+ if (strict_strtoul(buf, 0, &val) < 0)
+ return -EINVAL;
+
+ if (val) {
+ pci_scan_child_bus(slot->dev->bus);
+ pci_bus_add_devices(slot->dev->bus);
+ } else
+ sysfs_schedule_callback(&slot->dev->dev.kobj, remove_callback,
+ slot->dev, THIS_MODULE);
+ return len;
+}
+
+static struct attribute *legacy_attrs[] = {
+ &(struct attribute){ .name = "power", .mode = 0644 },
+ NULL,
+};
+
+static void legacy_release(struct kobject *kobj)
+{
+ struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
+
+ pci_dev_put(slot->dev);
+ kfree(slot);
+}
+
+static struct kobj_type legacy_ktype = {
+ .sysfs_ops = &(struct sysfs_ops){
+ .store = legacy_store, .show = legacy_show
+ },
+ .release = &legacy_release,
+ .default_attrs = legacy_attrs,
+};
+
+static int legacy_add_slot(struct pci_dev *pdev)
+{
+ struct legacy_slot *slot = kzalloc(sizeof(*slot), GFP_KERNEL);
+
+ if (!slot)
+ return -ENOMEM;
+
+ if (kobject_init_and_add(&slot->kobj, &legacy_ktype,
+ &pci_slots_kset->kobj, "%s",
+ pdev->dev.bus_id)) {
+ dev_warn(&pdev->dev, "Failed to created legacy fake slot\n");
+ return -EINVAL;
+ }
+ slot->dev = pci_dev_get(pdev);
+
+ list_add(&slot->list, &legacy_list);
+
+ return 0;
+}
+
+static int legacy_notify(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct pci_dev *pdev = to_pci_dev(data);
+
+ if (action == BUS_NOTIFY_ADD_DEVICE) {
+ legacy_add_slot(pdev);
+ } else if (action == BUS_NOTIFY_DEL_DEVICE) {
+ struct legacy_slot *slot;
+
+ list_for_each_entry(slot, &legacy_list, list)
+ if (slot->dev == pdev)
+ goto found;
+
+ dev_warn(&pdev->dev, "Missing legacy fake slot?");
+ return -ENODEV;
+found:
+ kobject_del(&slot->kobj);
+ list_del(&slot->list);
+ kobject_put(&slot->kobj);
+ }
+
+ return 0;
+}
+
+static struct notifier_block legacy_notifier = {
+ .notifier_call = legacy_notify
+};
+
+static int __init init_legacy(void)
+{
+ struct pci_dev *pdev = NULL;
+
+ /* Add existing devices */
+ while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)))
+ legacy_add_slot(pdev);
+
+ /* Be alerted of any new ones */
+ bus_register_notifier(&pci_bus_type, &legacy_notifier);
+ return 0;
+}
+module_init(init_legacy);
+
+static void __exit remove_legacy(void)
+{
+ struct legacy_slot *slot, *tmp;
+
+ bus_unregister_notifier(&pci_bus_type, &legacy_notifier);
+
+ list_for_each_entry_safe(slot, tmp, &legacy_list, list) {
+ list_del(&slot->list);
+ kobject_del(&slot->kobj);
+ kobject_put(&slot->kobj);
+ }
+}
+module_exit(remove_legacy);
+
+
+MODULE_AUTHOR("Trent Piepho <xyzzy@speakeasy.org>");
+MODULE_DESCRIPTION("Legacy version of the fakephp interface");
+MODULE_LICENSE("GPL");
diff --git a/drivers/pci/hotplug/legacy_fakephp.c b/drivers/pci/hotplug/legacy_fakephp.c
deleted file mode 100644
index 185cb67..0000000
--- a/drivers/pci/hotplug/legacy_fakephp.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/* Works like the fakephp driver used to, except a little better.
- *
- * - It's possible to remove devices with subordinate busses.
- * - New PCI devices that appear via any method, not just a fakephp triggered
- * rescan, will be noticed.
- * - Devices that are removed via any method, not just a fakephp triggered
- * removal, will also be noticed.
- *
- * Uses nothing from the pci-hotplug subsystem.
- *
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/list.h>
-#include <linux/kobject.h>
-#include <linux/sysfs.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include "../pci.h"
-
-struct legacy_slot {
- struct kobject kobj;
- struct pci_dev *dev;
- struct list_head list;
-};
-
-static LIST_HEAD(legacy_list);
-
-static ssize_t legacy_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
- strcpy(buf, "1\n");
- return 2;
-}
-
-static void remove_callback(void *data)
-{
- pci_remove_bus_device((struct pci_dev *)data);
-}
-
-static ssize_t legacy_store(struct kobject *kobj, struct attribute *attr,
- const char *buf, size_t len)
-{
- struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
- unsigned long val;
-
- if (strict_strtoul(buf, 0, &val) < 0)
- return -EINVAL;
-
- if (val) {
- pci_scan_child_bus(slot->dev->bus);
- pci_bus_add_devices(slot->dev->bus);
- } else
- sysfs_schedule_callback(&slot->dev->dev.kobj, remove_callback,
- slot->dev, THIS_MODULE);
- return len;
-}
-
-static struct attribute *legacy_attrs[] = {
- &(struct attribute){ .name = "power", .mode = 0644 },
- NULL,
-};
-
-static void legacy_release(struct kobject *kobj)
-{
- struct legacy_slot *slot = container_of(kobj, typeof(*slot), kobj);
-
- pci_dev_put(slot->dev);
- kfree(slot);
-}
-
-static struct kobj_type legacy_ktype = {
- .sysfs_ops = &(struct sysfs_ops){
- .store = legacy_store, .show = legacy_show
- },
- .release = &legacy_release,
- .default_attrs = legacy_attrs,
-};
-
-static int legacy_add_slot(struct pci_dev *pdev)
-{
- struct legacy_slot *slot = kzalloc(sizeof(*slot), GFP_KERNEL);
-
- if (!slot)
- return -ENOMEM;
-
- if (kobject_init_and_add(&slot->kobj, &legacy_ktype,
- &pci_slots_kset->kobj, "%s",
- pdev->dev.bus_id)) {
- dev_warn(&pdev->dev, "Failed to created legacy fake slot\n");
- return -EINVAL;
- }
- slot->dev = pci_dev_get(pdev);
-
- list_add(&slot->list, &legacy_list);
-
- return 0;
-}
-
-static int legacy_notify(struct notifier_block *nb,
- unsigned long action, void *data)
-{
- struct pci_dev *pdev = to_pci_dev(data);
-
- if (action == BUS_NOTIFY_ADD_DEVICE) {
- legacy_add_slot(pdev);
- } else if (action == BUS_NOTIFY_DEL_DEVICE) {
- struct legacy_slot *slot;
-
- list_for_each_entry(slot, &legacy_list, list)
- if (slot->dev == pdev)
- goto found;
-
- dev_warn(&pdev->dev, "Missing legacy fake slot?");
- return -ENODEV;
-found:
- kobject_del(&slot->kobj);
- list_del(&slot->list);
- kobject_put(&slot->kobj);
- }
-
- return 0;
-}
-
-static struct notifier_block legacy_notifier = {
- .notifier_call = legacy_notify
-};
-
-static int __init init_legacy(void)
-{
- struct pci_dev *pdev = NULL;
-
- /* Add existing devices */
- while ((pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)))
- legacy_add_slot(pdev);
-
- /* Be alerted of any new ones */
- bus_register_notifier(&pci_bus_type, &legacy_notifier);
- return 0;
-}
-module_init(init_legacy);
-
-static void __exit remove_legacy(void)
-{
- struct legacy_slot *slot, *tmp;
-
- bus_unregister_notifier(&pci_bus_type, &legacy_notifier);
-
- list_for_each_entry_safe(slot, tmp, &legacy_list, list) {
- list_del(&slot->list);
- kobject_del(&slot->kobj);
- kobject_put(&slot->kobj);
- }
-}
-module_exit(remove_legacy);
-
-
-MODULE_AUTHOR("Trent Piepho <xyzzy@speakeasy.org>");
-MODULE_DESCRIPTION("Legacy version of the fakephp interface");
-MODULE_LICENSE("GPL");