Re: [PATCH] [media] usb: constify vb2_ops structures

From: Laurent Pinchart
Date: Fri Sep 09 2016 - 04:42:45 EST


Hi Julia,

Thank you for the patch.

On Friday 09 Sep 2016 01:59:01 Julia Lawall wrote:
> Check for vb2_ops structures that are only stored in the ops field of a
> vb2_queue structure. That field is declared const, so vb2_ops structures
> that have this property can be declared as const also.
>
> The semantic patch that makes this change is as follows:
> (http://coccinelle.lip6.fr/)
>
> // <smpl>
> @r disable optional_qualifier@
> identifier i;
> position p;
> @@
> static struct vb2_ops i@p = { ... };
>
> @ok@
> identifier r.i;
> struct vb2_queue e;
> position p;
> @@
> e.ops = &i@p;
>
> @bad@
> position p != {r.p,ok.p};
> identifier r.i;
> struct vb2_ops e;
> @@
> e@i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
> struct vb2_ops i = { ... };
> // </smpl>
>
> Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>

For

> drivers/media/usb/uvc/uvc_queue.c | 2 +-

Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>

--
Regards,

Laurent Pinchart