[PATCH 2/5] [media] atomisp: constify videobuf_queue_ops structures

From: Julia Lawall
Date: Fri Aug 04 2017 - 08:36:42 EST


These videobuf_queue_ops structures are only passed as the second
argument to videobuf_queue_vmalloc_init, which is declared as const.
Thus the videobuf_queue_ops structures themselves can be const.

Done with the help of Coccinelle.

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

@ok1@
identifier r.i;
expression e1;
position p;
@@
videobuf_queue_vmalloc_init(e1,&i@p,...)

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

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

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>

---
drivers/staging/media/atomisp/pci/atomisp2/atomisp_fops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_fops.c b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_fops.c
index c151c84..d8cfed3 100644
--- a/drivers/staging/media/atomisp/pci/atomisp2/atomisp_fops.c
+++ b/drivers/staging/media/atomisp/pci/atomisp2/atomisp_fops.c
@@ -643,14 +643,14 @@ static void atomisp_buf_release_output(struct videobuf_queue *vq,
vb->state = VIDEOBUF_NEEDS_INIT;
}

-static struct videobuf_queue_ops videobuf_qops = {
+static const struct videobuf_queue_ops videobuf_qops = {
.buf_setup = atomisp_buf_setup,
.buf_prepare = atomisp_buf_prepare,
.buf_queue = atomisp_buf_queue,
.buf_release = atomisp_buf_release,
};

-static struct videobuf_queue_ops videobuf_qops_output = {
+static const struct videobuf_queue_ops videobuf_qops_output = {
.buf_setup = atomisp_buf_setup_output,
.buf_prepare = atomisp_buf_prepare_output,
.buf_queue = atomisp_buf_queue_output,