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[media] drivers: media: i2c: ak881x: constify v4l2_subdev_* structures

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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
   1809	    872	      0	   2681	    a79	drivers/media/i2c/ak881x.o

File size after:
  text	   data	    bss	    dec	    hex	filename
   2185	    496	      0	   2681	    a79	drivers/media/i2c/ak881x.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Bhumika Goyal 2016-12-13 15:26:13 -02:00 committed by Mauro Carvalho Chehab
parent 646c3ae9d9
commit 4d7aa5e991
1 changed files with 3 additions and 3 deletions
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6
drivers/media/i2c/ak881x.c
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@ -205,14 +205,14 @@ static int ak881x_s_stream(struct v4l2_subdev *sd, int enable)
return 0;
}
static struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
static const struct v4l2_subdev_core_ops ak881x_subdev_core_ops = {
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ak881x_g_register,
.s_register = ak881x_s_register,
#endif
};
static struct v4l2_subdev_video_ops ak881x_subdev_video_ops = {
static const struct v4l2_subdev_video_ops ak881x_subdev_video_ops = {
.s_std_output = ak881x_s_std_output,
.s_stream = ak881x_s_stream,
};
@ -224,7 +224,7 @@ static const struct v4l2_subdev_pad_ops ak881x_subdev_pad_ops = {
.get_fmt = ak881x_fill_fmt,
};
static struct v4l2_subdev_ops ak881x_subdev_ops = {
static const struct v4l2_subdev_ops ak881x_subdev_ops = {
.core = &ak881x_subdev_core_ops,
.video = &ak881x_subdev_video_ops,
.pad = &ak881x_subdev_pad_ops,