linux-kernel - Re: [PATCH 5/9] tty: serial: jsm_tty: constify uart

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Message-Id: <87r3935it4.fsf@linux.vnet.ibm.com>
Date:   Thu, 01 Sep 2016 19:58:15 -0300
From:   Gabriel Krisman Bertazi <krisman@...ux.vnet.ibm.com>
To:     Julia Lawall <Julia.Lawall@...6.fr>
Cc:     kernel-janitors@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jslaby@...e.com>, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/9] tty: serial: jsm_tty: constify uart_ops structures

Julia Lawall <Julia.Lawall@...6.fr> writes:

> Check for uart_ops structures that are only stored in the ops field of a
> uart_port structure.  This field is declared const, so uart_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 uart_ops i@p = { ... };
>
> @ok@
> identifier r.i;
> struct uart_port e;
> position p;
> @@
> e.ops = &i@p;
>
> @bad@
> position p != {r.p,ok.p};
> identifier r.i;
> struct uart_ops e;
> @@
> e@i@p
>
> @depends on !bad disable optional_qualifier@
> identifier r.i;
> @@
> static
> +const
>  struct uart_ops i = { ... };
> // </smpl>
>

Acked-by: Gabriel Krisman Bertazi <krisman@...ux.vnet.ibm.com>

-- 
Gabriel Krisman Bertazi