linux-kernel - [PATCH] base/core.c: improve comment of the function device_find

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Date:	Fri, 12 Apr 2013 13:59:32 +0200
From:	Federico Vaga <federico.vaga@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org,
	Federico Vaga <federico.vaga@...il.com>
Subject: [PATCH] base/core.c: improve comment of the function device_find_child()

Signed-off-by: Federico Vaga <federico.vaga@...il.com>
---
 drivers/base/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 016312437..eb0c6ea 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -1372,6 +1372,10 @@ int device_for_each_child(struct device *parent, void *data,
  * if it does.  If the callback returns non-zero and a reference to the
  * current device can be obtained, this function will return to the caller
  * and not iterate over any more devices.
+ *
+ * NOTE: internally, the function does get_device() on the retrieved child.
+ * It is duty of the caller performing a put_device() on the retrieved
+ * child device when the caller finishes to work on it.
  */
 struct device *device_find_child(struct device *parent, void *data,
 				 int (*match)(struct device *dev, void *data))
-- 
1.8.1.4

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