[PATCH] watchdog: constify watchdog_ops and watchdog_info structures

[Julia Lawall]

These watchdog_ops and watchdog_info structures are only stored
in the ops and info fields of a watchdog_device structure,
respectively, which are const.  Thus make the watchdog_ops and
watchdog_info structures const as well.

Done with the help of Coccinelle.  The rules for the watchdog_ops case are
as follows:

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct watchdog_ops i at p = { ... };

@ok@
identifier r.i;
struct watchdog_device e;
position p;
@@
e.ops = &i at p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct watchdog_ops e;
@@
e at i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct watchdog_ops i = { ... };
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall at lip6.fr>

---
 drivers/watchdog/coh901327_wdt.c |    2 +-
 drivers/watchdog/diag288_wdt.c   |    2 +-
 drivers/watchdog/it87_wdt.c      |    2 +-
 drivers/watchdog/mt7621_wdt.c    |    2 +-
 drivers/watchdog/rt2880_wdt.c    |    2 +-
 drivers/watchdog/stm32_iwdg.c    |    2 +-
 drivers/watchdog/ts72xx_wdt.c    |    2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c
index 6f59108..806a04a 100644
--- a/drivers/watchdog/diag288_wdt.c
+++ b/drivers/watchdog/diag288_wdt.c
@@ -213,7 +213,7 @@ static int wdt_set_timeout(struct watchdog_device * dev, unsigned int new_to)
 	.set_timeout = wdt_set_timeout,
 };
 
-static struct watchdog_info wdt_info = {
+static const struct watchdog_info wdt_info = {
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 	.firmware_version = 0,
 	.identity = "z Watchdog",
diff --git a/drivers/watchdog/it87_wdt.c b/drivers/watchdog/it87_wdt.c
index dd1e7ea..e96faea 100644
--- a/drivers/watchdog/it87_wdt.c
+++ b/drivers/watchdog/it87_wdt.c
@@ -253,7 +253,7 @@ static int wdt_set_timeout(struct watchdog_device *wdd, unsigned int t)
 	.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,
diff --git a/drivers/watchdog/mt7621_wdt.c b/drivers/watchdog/mt7621_wdt.c
index 48a0606..878835c 100644
--- a/drivers/watchdog/mt7621_wdt.c
+++ b/drivers/watchdog/mt7621_wdt.c
@@ -105,7 +105,7 @@ static int mt7621_wdt_bootcause(void)
 	return 0;
 }
 
-static struct watchdog_info mt7621_wdt_info = {
+static const struct watchdog_info mt7621_wdt_info = {
 	.identity = "Mediatek Watchdog",
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 };
diff --git a/drivers/watchdog/rt2880_wdt.c b/drivers/watchdog/rt2880_wdt.c
index 05524ba..1727aa3 100644
--- a/drivers/watchdog/rt2880_wdt.c
+++ b/drivers/watchdog/rt2880_wdt.c
@@ -119,7 +119,7 @@ static int rt288x_wdt_bootcause(void)
 	return 0;
 }
 
-static struct watchdog_info rt288x_wdt_info = {
+static const struct watchdog_info rt288x_wdt_info = {
 	.identity = "Ralink Watchdog",
 	.options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
 };
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 int ts72xx_wdt_settimeout(struct watchdog_device *wdd, unsigned int to)
 	.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,
diff --git a/drivers/watchdog/stm32_iwdg.c b/drivers/watchdog/stm32_iwdg.c
index 6c501b7..be64a86 100644
--- a/drivers/watchdog/stm32_iwdg.c
+++ b/drivers/watchdog/stm32_iwdg.c
@@ -140,7 +140,7 @@ static int stm32_iwdg_set_timeout(struct watchdog_device *wdd,
 	.identity	= "STM32 Independent Watchdog",
 };
 
-static struct watchdog_ops stm32_iwdg_ops = {
+static const struct watchdog_ops stm32_iwdg_ops = {
 	.owner		= THIS_MODULE,
 	.start		= stm32_iwdg_start,
 	.ping		= stm32_iwdg_ping,
diff --git a/drivers/watchdog/coh901327_wdt.c b/drivers/watchdog/coh901327_wdt.c
index 38dd60f0..4410337 100644
--- a/drivers/watchdog/coh901327_wdt.c
+++ b/drivers/watchdog/coh901327_wdt.c
@@ -218,7 +218,7 @@ static irqreturn_t coh901327_interrupt(int irq, void *data)
 	.identity = DRV_NAME,
 };
 
-static struct watchdog_ops coh901327_ops = {
+static const struct watchdog_ops coh901327_ops = {
 	.owner = THIS_MODULE,
 	.start = coh901327_start,
 	.stop = coh901327_stop,