[RFC PATCH 09/12] drivers: base: reintroduce find_bus()
From: "Enrico Weigelt, metux IT consult" <info@metux.net>
Date: 2021-02-08 22:28:56
Also in:
linux-devicetree, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
--- drivers/base/bus.c | 14 ++++++++++---- include/linux/device/bus.h | 2 ++ 2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 450d3ed6cf1f..a06ae2786092 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c@@ -754,13 +754,19 @@ EXPORT_SYMBOL_GPL(device_reprobe); * * Note that kset_find_obj increments bus' reference count. */ -#if 0 -struct bus_type *find_bus(char *name) +struct bus_type *find_bus(const char *name) { struct kobject *k = kset_find_obj(bus_kset, name); - return k ? to_bus(k) : NULL; + struct subsys_private *subsys_priv; + + if (!k) + return NULL; + + subsys_priv = container_of(to_kset(k), struct subsys_private, subsys); + + return subsys_priv->bus; } -#endif /* 0 */ +EXPORT_SYMBOL_GPL(find_bus); static int bus_add_groups(struct bus_type *bus, const struct attribute_group **groups)
diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h
index 36a1dae26c95..b4cbcfe176c5 100644
--- a/include/linux/device/bus.h
+++ b/include/linux/device/bus.h@@ -254,6 +254,8 @@ void bus_sort_breadthfirst(struct bus_type *bus, int (*compare)(const struct device *a, const struct device *b)); +struct bus_type *find_bus(const char *name); + /** * bus_unregister_device_by_name - remove device by bus id from specific bus * and unregister it from device core
--
2.11.0