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| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2017-08-04 15:09:46 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-08-20 15:06:58 +0300 |
| commit | 177267a9500c2739d0413706f5a32854322ea9aa (patch) | |
| tree | 4c1da84ace16c03dcadeb421548d34d8862ef542 | |
| parent | 6688324841d9fdc53bdb0aef88ab6352a7185513 (diff) | |
| download | linux-177267a9500c2739d0413706f5a32854322ea9aa.tar.xz | |
media: cx231xx: constify videobuf_queue_ops structures
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>
In the first case, there is a second commented call to
videobuf_queue_sg_init with the structure as the second argument. If that
code will be uncommented, the const will remain correct, because the second
parameter of that function is also const.
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>
| -rw-r--r-- | drivers/media/usb/cx231xx/cx231xx-417.c | 2 | ||||
| -rw-r--r-- | drivers/media/usb/cx231xx/cx231xx-video.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c index 8d5eb99deacb..d538fa407742 100644 --- a/drivers/media/usb/cx231xx/cx231xx-417.c +++ b/drivers/media/usb/cx231xx/cx231xx-417.c @@ -1490,7 +1490,7 @@ static void bb_buf_release(struct videobuf_queue *q, free_buffer(q, buf); } -static struct videobuf_queue_ops cx231xx_qops = { +static const struct videobuf_queue_ops cx231xx_qops = { .buf_setup = bb_buf_setup, .buf_prepare = bb_buf_prepare, .buf_queue = bb_buf_queue, diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index f67f86876625..179b8481a870 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -859,7 +859,7 @@ static void buffer_release(struct videobuf_queue *vq, free_buffer(vq, buf); } -static struct videobuf_queue_ops cx231xx_video_qops = { +static const struct videobuf_queue_ops cx231xx_video_qops = { .buf_setup = buffer_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, |