linux-kernel - [PATCH 4/7] [RFC] remove "#if 0" around find

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Message-ID: <20070411232512.GD20095@zarina>
Date:	Thu, 12 Apr 2007 03:25:12 +0400
From:	Anton Vorontsov <cbou@...l.ru>
To:	linux-kernel@...r.kernel.org
Cc:	kernel-discuss@...dhelds.org
Subject: [PATCH 4/7] [RFC] remove "#if 0" around find_bus function, export
	it.

This function were placed in "#if 0" because nobody was using it. We do use.

See http://lwn.net/Articles/210610/

---
 drivers/base/bus.c     |    5 ++---
 include/linux/device.h |    2 ++
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 253868e..971efa2 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -667,14 +667,13 @@ void put_bus(struct bus_type * bus)
  *
  *	Note that kset_find_obj increments bus' reference count.
  */
-#if 0
+
 struct bus_type * find_bus(char * name)
 {
 	struct kobject * k = kset_find_obj(&bus_subsys.kset, name);
 	return k ? to_bus(k) : NULL;
 }
-#endif  /*  0  */
-
+EXPORT_SYMBOL_GPL(find_bus);
 
 /**
  *	bus_add_attrs - Add default attributes for this bus.
diff --git a/include/linux/device.h b/include/linux/device.h
index 5cf30e9..4015b39 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -68,6 +68,8 @@ extern void bus_unregister(struct bus_type * bus);
 
 extern int __must_check bus_rescan_devices(struct bus_type * bus);
 
+extern struct bus_type *find_bus(char *name);
+
 /* iterator helpers for buses */
 
 int bus_for_each_dev(struct bus_type * bus, struct device * start, void * data,
-- 
1.5.0.5-dirty
-
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