media: mtk-mdp: constify v4l2_m2m_ops structures
authorJulia Lawall <Julia.Lawall@lip6.fr>
Sun, 6 Aug 2017 08:25:21 +0000 (04:25 -0400)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>
Sun, 20 Aug 2017 12:04:23 +0000 (08:04 -0400)
commit46014f61daf81581da1440dbe6be9173f8bb8588
treea7be0b59974ad1ccc2591aa199585f9755d6e8ad
parent040ffe12e88afd1b7cb01bae7f77efb959a52c2f
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>
drivers/media/platform/mtk-mdp/mtk_mdp_m2m.c