[PATCH 07/23] staging: media: tegra-video: document tegra_channel_get_remote_source_subdev

[luca.ceresoli at bootlin.com]

From: Luca Ceresoli <luca.ceresoli at bootlin.com>

Clarify what this function does.

Signed-off-by: Luca Ceresoli <luca.ceresoli at bootlin.com>
---
 drivers/staging/media/tegra-video/vi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 0fe3c7f6d234..8a7512ce2273 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -154,6 +154,9 @@ tegra_channel_get_remote_csi_subdev(struct tegra_vi_channel *chan)
 	return media_entity_to_v4l2_subdev(pad->entity);
 }
 
+/*
+ * Walk up the chain until the initial source (e.g. image sensor)
+ */
 struct v4l2_subdev *
 tegra_channel_get_remote_source_subdev(struct tegra_vi_channel *chan)
 {
-- 
2.34.1