From: Joachim Fenkes Date: Wed, 26 Sep 2007 09:44:57 +0000 (+1000) Subject: [POWERPC] ibmebus: Remove bus match/probe/remove functions X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a988c0a627ee654b4d692570572567aec06c3e13;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [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 Acked-by: Arnd Bergmann Signed-off-by: Paul Mackerras --- 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 #include #include +#include #include #include @@ -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);