[PATCH 3/4] powerpc/vio: clarify vio_find_node reference counting
Johan Hovold
johan at kernel.org
Wed Nov 2 02:26:02 AEDT 2016
Add comment clarifying that vio_find_node() takes a reference to the
embedded struct device which needs to be dropped after use.
Signed-off-by: Johan Hovold <johan at kernel.org>
---
arch/powerpc/kernel/vio.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index b3813ddb2fb4..2c8fb3ec989e 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -1648,6 +1648,9 @@ static struct vio_dev *vio_find_name(const char *name)
/**
* vio_find_node - find an already-registered vio_dev
* @vnode: device_node of the virtual device we're looking for
+ *
+ * Takes a reference to the embedded struct device which needs to be dropped
+ * after use.
*/
struct vio_dev *vio_find_node(struct device_node *vnode)
{
--
2.7.3
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