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 <bhumirks@xxxxxxxxx>
---
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
--
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