watchdog: constify watchdog_info structures

Declare watchdog_info structures as const as they are only stored in the
info field of watchdog_device structures. This field is of type const
struct watchdog_info *, so watchdog_info structures having this property
can be declared const too.
Done using Coccinelle:

@r1 disable optional_qualifier@
identifier i;
position p;
@@
static struct watchdog_info i@p={...};

@ok@
identifier r1.i;
position p;
struct watchdog_device obj;
@@
obj.info=&i@p;

@bad@
position p!={r1.p,ok.p};
identifier r1.i;
@@
i@p

@depends on !bad disable optional_qualifier@
identifier r1.i;
@@
+const
struct watchdog_info i;

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
index 98acef72334d..8d61e8bfe60b 100644
--- a/drivers/watchdog/cadence_wdt.c
+++ b/drivers/watchdog/cadence_wdt.c
@@ -262,7 +262,7 @@ static irqreturn_t cdns_wdt_irq_handler(int irq, void *dev_id)
  * Info structure used to indicate the features supported by the device
  * to the upper layers. This is defined in watchdog.h header file.
  */
-static struct watchdog_info cdns_wdt_info = {
+static const struct watchdog_info cdns_wdt_info = {
 	.identity	= "cdns_wdt watchdog",
 	.options	= WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
 			  WDIOF_MAGICCLOSE,