linux-kernel - [PATCH 07/23] staging: media: tegra-video: document tegra_channel_get_remote_source

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Message-Id: <20221109141852.729246-8-luca.ceresoli@bootlin.com>
Date:   Wed,  9 Nov 2022 15:18:36 +0100
From:   luca.ceresoli@...tlin.com
To:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Sowjanya Komatineni <skomatineni@...dia.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Dmitry Osipenko <digetx@...il.com>
Cc:     Luca Ceresoli <luca.ceresoli@...tlin.com>,
        linux-media@...r.kernel.org, linux-tegra@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Richard Leitner <richard.leitner@...data.com>
Subject: [PATCH 07/23] staging: media: tegra-video: document tegra_channel_get_remote_source_subdev

From: Luca Ceresoli <luca.ceresoli@...tlin.com>

Clarify what this function does.

Signed-off-by: Luca Ceresoli <luca.ceresoli@...tlin.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