[media] exynos4-is: constify v4l2_subdev_* structures
authorBhumika Goyal <bhumirks@gmail.com>
Mon, 12 Dec 2016 18:03:57 +0000 (16:03 -0200)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>
Tue, 31 Jan 2017 12:04:52 +0000 (10:04 -0200)
commita2fafda66dccb84592d4b9e42e429471c356c4fc
treeafde5dab5b80bbef1d228269e076ae66182057ae
parent4742575cde1f3cee0ea6b41af42781672315b04b
[media] exynos4-is: constify v4l2_subdev_* structures

v4l2_subdev_{core/pad/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_ops i@p = {...};

@ok1@
identifier r1.i;
position p;
expression e1;
@@
v4l2_subdev_init(e1,&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_ops i;

File size before:
   text    data     bss     dec     hex filename
  16830    1064       0   17894    45e6 platform/exynos4-is/fimc-capture.o
   7787     704      20    8511    213f platform/exynos4-is/mipi-csis.o

File size after:
   text    data     bss     dec     hex filename
  17022     880       0   17902    45ee platform/exynos4-is/fimc-capture.o
   8299     192      20    8511    213f platform/exynos4-is/mipi-csis.o

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/platform/exynos4-is/fimc-capture.c
drivers/media/platform/exynos4-is/mipi-csis.c