| Message ID | 1502007921-22968-5-git-send-email-Julia.Lawall@lip6.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sun, Aug 6, 2017 at 11:25 AM, Julia Lawall <Julia.Lawall@lip6.fr> wrote: > 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> Acked-by: Ulyanov Mikhail <mikhail.ulyanov@cogentembedded.com>
diff --git a/drivers/media/platform/rcar_jpu.c b/drivers/media/platform/rcar_jpu.c index d1746ec..070bac3 100644 --- a/drivers/media/platform/rcar_jpu.c +++ b/drivers/media/platform/rcar_jpu.c @@ -1506,7 +1506,7 @@ static void jpu_job_abort(void *priv) jpu_cleanup(ctx, true); } -static struct v4l2_m2m_ops jpu_m2m_ops = { +static const struct v4l2_m2m_ops jpu_m2m_ops = { .device_run = jpu_device_run, .job_ready = jpu_job_ready, .job_abort = jpu_job_abort,
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> --- drivers/media/platform/rcar_jpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)