From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 6 Aug 2017 08:25:10 +0000 (-0400)
Subject: media: st-delta: constify v4l2_m2m_ops structures
X-Git-Tag: android-x86-8.1-r1~2074^2~693
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=8751ac288ee46c9e17d05245f4b8fe10a72bbe61;p=android-x86%2Fkernel.git

media: st-delta: 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/sti/delta/delta-v4l2.c b/drivers/media/platform/sti/delta/delta-v4l2.c
index ff9850ea3ed7..b2dc3d223a9c 100644
--- a/drivers/media/platform/sti/delta/delta-v4l2.c
+++ b/drivers/media/platform/sti/delta/delta-v4l2.c
@@ -1095,7 +1095,7 @@ static int delta_job_ready(void *priv)
 }
 
 /* mem-to-mem ops */
-static struct v4l2_m2m_ops delta_m2m_ops = {
+static const struct v4l2_m2m_ops delta_m2m_ops = {
 	.device_run     = delta_device_run,
 	.job_ready	= delta_job_ready,
 	.job_abort      = delta_job_abort,