[POWERPC] ibmebus: Remove bus match/probe/remove functions

Remove old code that will be replaced by rewritten and shorter functions in
the next patch.  Keep struct ibmebus_dev and struct ibmebus_driver for now,
but replace ibmebus_{,un}register_driver() by dummy functions.  This way, the
kernel will still compile and run during the transition and git bisect will
be happy.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 6 insertions, 193 deletions

diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index 2e16ca5778a3..af21306e2ef9 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -41,6 +41,7 @@
 #include <linux/kobject.h>
 #include <linux/dma-mapping.h>
 #include <linux/interrupt.h>
+#include <linux/of_platform.h>
 #include <asm/ibmebus.h>
 #include <asm/abs_addr.h>
 
@@ -124,183 +125,14 @@ static struct dma_mapping_ops ibmebus_dma_ops = {
         .dma_supported  = ibmebus_dma_supported,
 };
 
-static int ibmebus_bus_probe(struct device *dev)
-{
-        struct ibmebus_dev *ibmebusdev    = to_ibmebus_dev(dev);
-        struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
-        const struct of_device_id *id;
-        int error = -ENODEV;
-
-        if (!ibmebusdrv->probe)
-                return error;
-
-        id = of_match_device(ibmebusdrv->id_table, &ibmebusdev->ofdev);
-        if (id) {
-                error = ibmebusdrv->probe(ibmebusdev, id);
-        }
-
-        return error;
-}
-
-static int ibmebus_bus_remove(struct device *dev)
-{
-        struct ibmebus_dev *ibmebusdev    = to_ibmebus_dev(dev);
-        struct ibmebus_driver *ibmebusdrv = to_ibmebus_driver(dev->driver);
-
-        if (ibmebusdrv->remove) {
-                return ibmebusdrv->remove(ibmebusdev);
-        }
-
-        return 0;
-}
-
-static void __devinit ibmebus_dev_release(struct device *dev)
-{
-        of_node_put(to_ibmebus_dev(dev)->ofdev.node);
-        kfree(to_ibmebus_dev(dev));
-}
-
-static int __devinit ibmebus_register_device_common(
-        struct ibmebus_dev *dev, const char *name)
-{
-        int err = 0;
-
-        dev->ofdev.dev.parent  = &ibmebus_bus_device;
-        dev->ofdev.dev.bus     = &ibmebus_bus_type;
-        dev->ofdev.dev.release = ibmebus_dev_release;
-
-        dev->ofdev.dev.archdata.of_node = dev->ofdev.node;
-        dev->ofdev.dev.archdata.dma_ops = &ibmebus_dma_ops;
-        dev->ofdev.dev.archdata.numa_node = of_node_to_nid(dev->ofdev.node);
-
-        /* An ibmebusdev is based on a of_device. We have to change the
-         * bus type to use our own DMA mapping operations.
-         */
-        if ((err = of_device_register(&dev->ofdev)) != 0) {
-                printk(KERN_ERR "%s: failed to register device (%d).\n",
-                       __FUNCTION__, err);
-                return -ENODEV;
-        }
-
-        return 0;
-}
-
-static struct ibmebus_dev* __devinit ibmebus_register_device_node(
-        struct device_node *dn)
-{
-        struct ibmebus_dev *dev;
-        int i, len, bus_len;
-
-        dev = kzalloc(sizeof(struct ibmebus_dev), GFP_KERNEL);
-        if (!dev)
-                return ERR_PTR(-ENOMEM);
-
-        dev->ofdev.node = of_node_get(dn);
-
-        len = strlen(dn->full_name + 1);
-        bus_len = min(len, BUS_ID_SIZE - 1);
-        memcpy(dev->ofdev.dev.bus_id, dn->full_name + 1
-               + (len - bus_len), bus_len);
-        for (i = 0; i < bus_len; i++)
-                if (dev->ofdev.dev.bus_id[i] == '/')
-                        dev->ofdev.dev.bus_id[i] = '_';
-
-        /* Register with generic device framework. */
-        if (ibmebus_register_device_common(dev, dn->name) != 0) {
-                kfree(dev);
-                return ERR_PTR(-ENODEV);
-        }
-
-        return dev;
-}
-
-static void ibmebus_probe_of_nodes(char* name)
-{
-        struct device_node *dn = NULL;
-
-        while ((dn = of_find_node_by_name(dn, name))) {
-                if (IS_ERR(ibmebus_register_device_node(dn))) {
-                        of_node_put(dn);
-                        return;
-                }
-        }
-
-        of_node_put(dn);
-
-        return;
-}
-
-static void ibmebus_add_devices_by_id(struct of_device_id *idt)
-{
-        while (strlen(idt->name) > 0) {
-                ibmebus_probe_of_nodes(idt->name);
-                idt++;
-        }
-
-        return;
-}
-
-static int ibmebus_match_name(struct device *dev, void *data)
-{
-        const struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-        const char *name;
-
-        name = of_get_property(ebus_dev->ofdev.node, "name", NULL);
-
-        if (name && (strcmp(data, name) == 0))
-                return 1;
-
-        return 0;
-}
-
-static int ibmebus_unregister_device(struct device *dev)
-{
-        of_device_unregister(to_of_device(dev));
-
-        return 0;
-}
-
-static void ibmebus_remove_devices_by_id(struct of_device_id *idt)
-{
-        struct device *dev;
-
-        while (strlen(idt->name) > 0) {
-                while ((dev = bus_find_device(&ibmebus_bus_type, NULL,
-                                              (void*)idt->name,
-                                              ibmebus_match_name))) {
-                        ibmebus_unregister_device(dev);
-                }
-                idt++;
-        }
-
-        return;
-}
-
 int ibmebus_register_driver(struct ibmebus_driver *drv)
 {
-        int err = 0;
-
-        drv->driver.name   = drv->name;
-        drv->driver.bus    = &ibmebus_bus_type;
-        drv->driver.probe  = ibmebus_bus_probe;
-        drv->driver.remove = ibmebus_bus_remove;
-
-        if ((err = driver_register(&drv->driver) != 0))
-                return err;
-
-        /* remove all supported devices first, in case someone
-         * probed them manually before registering the driver */
-        ibmebus_remove_devices_by_id(drv->id_table);
-        ibmebus_add_devices_by_id(drv->id_table);
-
         return 0;
 }
 EXPORT_SYMBOL(ibmebus_register_driver);
 
 void ibmebus_unregister_driver(struct ibmebus_driver *drv)
 {
-        driver_unregister(&drv->driver);
-        ibmebus_remove_devices_by_id(drv->id_table);
 }
 EXPORT_SYMBOL(ibmebus_unregister_driver);
 
@@ -328,23 +160,6 @@ void ibmebus_free_irq(struct ibmebus_dev *dev, u32 ist, void *dev_id)
 }
 EXPORT_SYMBOL(ibmebus_free_irq);
 
-static int ibmebus_bus_match(struct device *dev, struct device_driver *drv)
-{
-        const struct ibmebus_dev *ebus_dev = to_ibmebus_dev(dev);
-        struct ibmebus_driver *ebus_drv    = to_ibmebus_driver(drv);
-        const struct of_device_id *ids     = ebus_drv->id_table;
-        const struct of_device_id *found_id;
-
-        if (!ids)
-                return 0;
-
-        found_id = of_match_device(ids, &ebus_dev->ofdev);
-        if (found_id)
-                return 1;
-
-        return 0;
-}
-
 static ssize_t name_show(struct device *dev,
                          struct device_attribute *attr, char *buf)
 {
@@ -406,7 +221,7 @@ static ssize_t ibmebus_store_probe(struct bus_type *bus,
         }
 
         if ((dn = of_find_node_by_path(path))) {
-                dev = ibmebus_register_device_node(dn);
+/*              dev = ibmebus_register_device_node(dn); */
                 of_node_put(dn);
                 rc = IS_ERR(dev) ? PTR_ERR(dev) : count;
         } else {
@@ -432,7 +247,7 @@ static ssize_t ibmebus_store_remove(struct bus_type *bus,
 
         if ((dev = bus_find_device(&ibmebus_bus_type, NULL, path,
                                    ibmebus_match_path))) {
-                ibmebus_unregister_device(dev);
+/*              ibmebus_unregister_device(dev); */
 
                 kfree(path);
                 return count;
@@ -452,8 +267,6 @@ static struct bus_attribute ibmebus_bus_attrs[] = {
 };
 
 struct bus_type ibmebus_bus_type = {
-        .name      = "ibmebus",
-        .match     = ibmebus_bus_match,
         .dev_attrs = ibmebus_dev_attrs,
         .bus_attrs = ibmebus_bus_attrs
 };
@@ -465,9 +278,9 @@ static int __init ibmebus_bus_init(void)
 
         printk(KERN_INFO "IBM eBus Device Driver\n");
 
-        err = bus_register(&ibmebus_bus_type);
+        err = of_bus_type_init(&ibmebus_bus_type, "ibmebus");
         if (err) {
-                printk(KERN_ERR ":%s: failed to register IBM eBus.\n",
+                printk(KERN_ERR "%s: failed to register IBM eBus.\n",
                        __FUNCTION__);
                 return err;
         }
@@ -483,4 +296,4 @@ static int __init ibmebus_bus_init(void)
 
         return 0;
 }
-__initcall(ibmebus_bus_init);
+postcore_initcall(ibmebus_bus_init);