Messages in this thread Patch in this message | | | From | Julia Lawall <> | Subject | [PATCH 09/12] [media] media: mx2-emmaprp: constify v4l2_m2m_ops structures | Date | Sun, 6 Aug 2017 10:25:18 +0200 |
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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/mx2_emmaprp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mx2_emmaprp.c b/drivers/media/platform/mx2_emmaprp.c index 03e47e0..7fd209e 100644 --- a/drivers/media/platform/mx2_emmaprp.c +++ b/drivers/media/platform/mx2_emmaprp.c @@ -882,7 +882,7 @@ static int emmaprp_mmap(struct file *file, struct vm_area_struct *vma) .vfl_dir = VFL_DIR_M2M, }; -static struct v4l2_m2m_ops m2m_ops = { +static const struct v4l2_m2m_ops m2m_ops = { .device_run = emmaprp_device_run, .job_abort = emmaprp_job_abort, .lock = emmaprp_lock,
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