v4l2_subdev_pad_ops structures are stored in the pad field
of the v4l2_subdev_ops structure and this field is of type const.
As the v4l2_subdev_pad_ops structures are never modified, they can be
declared as const.
Done using Coccinelle:

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_subdev_pad_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
struct v4l2_subdev_ops obj;
@@
obj.pad=&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_pad_ops i;

File size before:
 text      data     bss     dec     hex filename
   7633     512      20    8165    1fe5 media/i2c/m5mols/m5mols_core.o

File size after:
  text     data     bss     dec     hex filename
   7761     384      20    8165    1fe5 media/i2c/m5mols/m5mols_core.o

Signed-off-by: Bhumika Goyal <bhumi...@gmail.com>
---
 drivers/media/i2c/m5mols/m5mols_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/m5mols/m5mols_core.c 
b/drivers/media/i2c/m5mols/m5mols_core.c
index acb804b..91451c4c 100644
--- a/drivers/media/i2c/m5mols/m5mols_core.c
+++ b/drivers/media/i2c/m5mols/m5mols_core.c
@@ -651,7 +651,7 @@ static int m5mols_enum_mbus_code(struct v4l2_subdev *sd,
        return 0;
 }
 
-static struct v4l2_subdev_pad_ops m5mols_pad_ops = {
+static const struct v4l2_subdev_pad_ops m5mols_pad_ops = {
        .enum_mbus_code = m5mols_enum_mbus_code,
        .get_fmt        = m5mols_get_fmt,
        .set_fmt        = m5mols_set_fmt,
-- 
1.9.1

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