linux-kernel - [PATCH] media: i2c: rdacm20: Constify static structs

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Date:   Thu, 19 Nov 2020 23:22:48 +0100
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Jacopo Mondi <jacopo+renesas@...ndi.org>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Niklas Söderlund 
        <niklas.soderlund+renesas@...natech.se>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH] media: i2c: rdacm20: Constify static structs

The only usage of rdacm20_video_ops is to assign it to the video field
in the v4l2_subdev_ops struct which is a pointer to const,  and the only
usage of rdacm20_subdev_ops is to pass its address to
v4l2_i2c_subdev_init() which accepts a pointer to const. Make them const
to allow the compiler to put them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 drivers/media/i2c/rdacm20.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
index 1ed928c4ca70..ac00a6743623 100644
--- a/drivers/media/i2c/rdacm20.c
+++ b/drivers/media/i2c/rdacm20.c
@@ -435,7 +435,7 @@ static int rdacm20_get_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static struct v4l2_subdev_video_ops rdacm20_video_ops = {
+static const struct v4l2_subdev_video_ops rdacm20_video_ops = {
 	.s_stream	= rdacm20_s_stream,
 };
 
@@ -445,7 +445,7 @@ static const struct v4l2_subdev_pad_ops rdacm20_subdev_pad_ops = {
 	.set_fmt	= rdacm20_get_fmt,
 };
 
-static struct v4l2_subdev_ops rdacm20_subdev_ops = {
+static const struct v4l2_subdev_ops rdacm20_subdev_ops = {
 	.video		= &rdacm20_video_ops,
 	.pad		= &rdacm20_subdev_pad_ops,
 };
-- 
2.29.2