Re: [PATCH] watchdog: ts72xx_wdt: constify watchdog_ops structure

[Gustavo A. R. Silva]

On 07/07/2017 08:44 PM, Guenter Roeck wrote:
> On 07/07/2017 05:18 PM, Gustavo A. R. Silva wrote:
> > Check for watchdog_ops structures that are only stored in the ops 
> > field of
> > a watchdog_device structure. This field is declared const, so 
> > watchdog_ops
> > structures that have this property can be declared as const also.
> >
> > This issue was detected using Coccinelle and the following semantic 
> > patch:
> >
> > @r
> > disable optional_qualifier@
> > identifier i;
> > position p;
> > @@
> > static struct watchdog_ops i@p = { ... };
> >
> > @ok@
> > identifier r.i;
> > struct watchdog_device e;
> > position p;
> > @@
> > e.ops = &i@p;
> >
> > @bad@
> > position p != {r.p,ok.p};
> > identifier r.i;
> > struct watchdog_ops e;
> > @@
> > e@i@p
> >
> > @depends on !bad disable optional_qualifier@
> > identifier r.i;
> > @@
> > static
> > +const
> >   struct watchdog_ops i = { ... };
> >
> > Signed-off-by: Gustavo A. R. Silva <garsilva@xxxxxxxxxxxxxx>
>
> Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>

Thank you, Guenter.

> > ---
> >   drivers/watchdog/ts72xx_wdt.c | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/drivers/watchdog/ts72xx_wdt.c 
> > b/drivers/watchdog/ts72xx_wdt.c
> > index 17c25da..811e43c 100644
> > --- a/drivers/watchdog/ts72xx_wdt.c
> > +++ b/drivers/watchdog/ts72xx_wdt.c
> > @@ -112,7 +112,7 @@ static const struct watchdog_info 
> > ts72xx_wdt_ident = {
> >       .identity        = "TS-72XX WDT",
> >   };
> >   -static struct watchdog_ops ts72xx_wdt_ops = {
> > +static const struct watchdog_ops ts72xx_wdt_ops = {
> >       .owner        = THIS_MODULE,
> >       .start        = ts72xx_wdt_start,
> >       .stop        = ts72xx_wdt_stop,

--
Gustavo A. R. Silva