[media] media: platform: soc_camera_platform : constify v4l2_subdev_* structures

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)

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_subdev_core_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
struct v4l2_subdev_ops obj;
@@
obj.core=&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_core_ops i;

File size before:
    text   data	    bss	    dec	    hex	filename
    858	    576	      0	   1434	    59a soc_camera/soc_camera_platform.o

File size after:
  text	   data	    bss	    dec	    hex	filename
   1234	    192	      0	   1426	    592 soc_camera/soc_camera_platform.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/platform/soc_camera/soc_camera_platform.c b/drivers/media/platform/soc_camera/soc_camera_platform.c
index 534d6c3c6d608865aa7afe0135c31dcdb4b61cfe..cb4986b8f798296ff89851cc0615541c1e688b1e 100644 (file)
--- a/drivers/media/platform/soc_camera/soc_camera_platform.c
+++ b/drivers/media/platform/soc_camera/soc_camera_platform.c
@@ -59,7 +59,7 @@ static int soc_camera_platform_s_power(struct v4l2_subdev *sd, int on)
        return soc_camera_set_power(p->icd->control, &p->icd->sdesc->subdev_desc, NULL, on);
 }
 
-static struct v4l2_subdev_core_ops platform_subdev_core_ops = {
+static const struct v4l2_subdev_core_ops platform_subdev_core_ops = {
        .s_power = soc_camera_platform_s_power,
 };
 
@@ -110,7 +110,7 @@ static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd,
        return 0;
 }
 
-static struct v4l2_subdev_video_ops platform_subdev_video_ops = {
+static const struct v4l2_subdev_video_ops platform_subdev_video_ops = {
        .s_stream       = soc_camera_platform_s_stream,
        .g_mbus_config  = soc_camera_platform_g_mbus_config,
 };
@@ -122,7 +122,7 @@ static const struct v4l2_subdev_pad_ops platform_subdev_pad_ops = {
        .set_fmt        = soc_camera_platform_fill_fmt,
 };
 
-static struct v4l2_subdev_ops platform_subdev_ops = {
+static const struct v4l2_subdev_ops platform_subdev_ops = {
        .core   = &platform_subdev_core_ops,
        .video  = &platform_subdev_video_ops,
        .pad    = &platform_subdev_pad_ops,