v4l2_subdev_{core/video}_ops structures are stored in the
fields of the v4l2_subdev_ops structure which are of type const.
Also, v4l2_subdev_ops structure is passed to a function
having its argument of type const. As these structures are never
modified, so declare them as const.
Done using Coccinelle: (One of the scripts used)
@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_subdev_video_ops i@p = {...};
@ok1@
identifier r1.i;
position p;
struct v4l2_subdev_ops obj;
@@
obj.video=&i@p;
@bad@
position p!={r1.p,ok1.p};
identifier r1.i;
@@
i@p
@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct v4l2_subdev_video_ops i;
File size before:
text data bss dec hex filename
6082 1010 16 7108 1bc4 drivers/media/i2c/mt9m111.o
File size after:
text data bss dec hex filename
6466 642 16 7124 1bd4 drivers/media/i2c/mt9m111.o
Signed-off-by: Bhumika Goyal <bhumirks@xxxxxxxxx>
---
Changes in v2:
- Send the patch to the maintainers as well.
drivers/media/i2c/mt9m111.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c
index 72e71b7..99b992e 100644
--- a/drivers/media/i2c/mt9m111.c
+++ b/drivers/media/i2c/mt9m111.c
@@ -835,7 +835,7 @@ static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
.s_ctrl = mt9m111_s_ctrl,
};
-static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
+static const struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
.s_power = mt9m111_s_power,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = mt9m111_g_register,
@@ -865,7 +865,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
return 0;
}
-static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
+static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
.g_mbus_config = mt9m111_g_mbus_config,
};
@@ -877,7 +877,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
.set_fmt = mt9m111_set_fmt,
};
-static struct v4l2_subdev_ops mt9m111_subdev_ops = {
+static const struct v4l2_subdev_ops mt9m111_subdev_ops = {
.core = &mt9m111_subdev_core_ops,
.video = &mt9m111_subdev_video_ops,
.pad = &mt9m111_subdev_pad_ops,
--
1.9.1
--
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