watchdog: it87_wdt: constify watchdog_ops structure

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 <[email protected]>

---
  drivers/watchdog/it87_wdt.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

drivers/watchdog/it87_wdt.c +1 -1

index dd1e7ea..e96faea 100644
@@ -253,7 +253,7 @@ static const struct watchdog_info ident = {
  	.identity = WATCHDOG_NAME,
  };
 
-static struct watchdog_ops wdt_ops = {
+static const struct watchdog_ops wdt_ops = {
  	.owner = THIS_MODULE,
  	.start = wdt_start,
  	.stop = wdt_stop,