[PATCH] media: platform: exynos4-is: constify v4l2_subdev_ops strcutures

[Bhumika Goyal]

Check for v4l2_subdev_ops structures that are only passed as an
argument to the function v4l2_subdev_init. This argument is of type
const, so v4l2_subdev_ops structures having this property can also  be
declared const.
Done using Coccinelle:

@r1 disable optional_qualifier @
identifier i;
position p;
@@
static struct v4l2_subdev_ops i@p = {...};

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

Before and after size details:

   text    data     bss     dec     hex filename
   6743     152      20    6915    1b03 platform/exynos4-is/fimc-isp.o
   6807      88      20    6915    1b03 platform/exynos4-is/fimc-isp.o

  15653     392      36   16081    3ed1 platform/exynos4-is/fimc-lite.o
  15717     308      36   16061    3ebd platform/exynos4-is/fimc-lite.o

Signed-off-by: Bhumika Goyal <bhumi...@gmail.com>
---
 drivers/media/platform/exynos4-is/fimc-isp.c  | 2 +-
 drivers/media/platform/exynos4-is/fimc-lite.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c 
b/drivers/media/platform/exynos4-is/fimc-isp.c
index 8efe916..fd793d3 100644
--- a/drivers/media/platform/exynos4-is/fimc-isp.c
+++ b/drivers/media/platform/exynos4-is/fimc-isp.c
@@ -433,7 +433,7 @@ static void fimc_isp_subdev_unregistered(struct v4l2_subdev 
*sd)
        .s_power = fimc_isp_subdev_s_power,
 };
 
-static struct v4l2_subdev_ops fimc_is_subdev_ops = {
+static const struct v4l2_subdev_ops fimc_is_subdev_ops = {
        .core = &fimc_is_core_ops,
        .video = &fimc_is_subdev_video_ops,
        .pad = &fimc_is_subdev_pad_ops,
diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c 
b/drivers/media/platform/exynos4-is/fimc-lite.c
index b91abf1..18b6aaa 100644
--- a/drivers/media/platform/exynos4-is/fimc-lite.c
+++ b/drivers/media/platform/exynos4-is/fimc-lite.c
@@ -1361,7 +1361,7 @@ static void fimc_lite_subdev_unregistered(struct 
v4l2_subdev *sd)
        .log_status = fimc_lite_log_status,
 };
 
-static struct v4l2_subdev_ops fimc_lite_subdev_ops = {
+static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
        .core = &fimc_lite_core_ops,
        .video = &fimc_lite_subdev_video_ops,
        .pad = &fimc_lite_subdev_pad_ops,
-- 
1.9.1