media: mtk-mdp: constify v4l2_m2m_ops structures

The v4l2_m2m_ops structures are only passed as the only
argument to v4l2_m2m_init, which is declared as const.
Thus the v4l2_m2m_ops structures themselves can be const.

Done with the help of Coccinelle.

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct v4l2_m2m_ops i@p = { ... };

@ok1@
identifier r.i;
position p;
@@
v4l2_m2m_init(&i@p)

@bad@
position p != {r.p,ok1.p};
identifier r.i;
struct v4l2_m2m_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct v4l2_m2m_ops i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
index 3038d62ba735a9e77e201440f10d9f76131dfa1a..583d47724ee82d542fe7bee80008ba6be4809a54 100644 (file)
--- a/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
+++ b/drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c
@@ -1225,7 +1225,7 @@ static const struct v4l2_file_operations mtk_mdp_m2m_fops = {
        .mmap           = v4l2_m2m_fop_mmap,
 };
 
-static struct v4l2_m2m_ops mtk_mdp_m2m_ops = {
+static const struct v4l2_m2m_ops mtk_mdp_m2m_ops = {
        .device_run     = mtk_mdp_m2m_device_run,
        .job_abort      = mtk_mdp_m2m_job_abort,
 };