thermal: Constify struct thermal_zone_device_ops

JIRA: https://issues.redhat.com/browse/RHEL-110837

commit 992e2ed
Author: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date:   Sun May 25 11:40:04 2025 +0200

    thermal: Constify struct thermal_zone_device_ops

    'struct thermal_zone_device_ops' are not modified in these drivers.

    Constifying these structures moves some data to a read-only section, so
    increases overall security, especially when the structure holds some
    function pointers.

    On a x86_64, with allmodconfig, as an example:
    Before:
    ======
       text    data     bss     dec     hex filename
      28116    5168     128   33412    8284 drivers/thermal/armada_thermal.o

    After:
    =====
       text    data     bss     dec     hex filename
      28244    5040     128   33412    8284 drivers/thermal/armada_thermal.o

    Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
    Reviewed-by: Frank Li <Frank.Li@nxp.com>
    Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> # For Armada
    Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
    Link: https://lore.kernel.org/r/5bba3bf0139e2418b306a0f9a2f1f81ef49e88a6.1748165978.git.christophe.jaillet@wanadoo.fr
    Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/thermal/armada_thermal.c

@@ -408,7 +408,7 @@ static int armada_get_temp_legacy(struct thermal_zone_device *thermal,
 	return ret;
 }
 
-static struct thermal_zone_device_ops legacy_ops = {
+static const struct thermal_zone_device_ops legacy_ops = {
 	.get_temp = armada_get_temp_legacy,
 };
 

drivers/thermal/da9062-thermal.c

@@ -137,7 +137,7 @@ static int da9062_thermal_get_temp(struct thermal_zone_device *z,
 	return 0;
 }
 
-static struct thermal_zone_device_ops da9062_thermal_ops = {
+static const struct thermal_zone_device_ops da9062_thermal_ops = {
 	.get_temp	= da9062_thermal_get_temp,
 };
 

drivers/thermal/dove_thermal.c

@@ -106,7 +106,7 @@ static int dove_get_temp(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = dove_get_temp,
 };
 

drivers/thermal/imx_thermal.c

@@ -361,7 +361,7 @@ static bool imx_should_bind(struct thermal_zone_device *tz,
 	return trip->type == THERMAL_TRIP_PASSIVE;
 }
 
-static struct thermal_zone_device_ops imx_tz_ops = {
+static const struct thermal_zone_device_ops imx_tz_ops = {
 	.should_bind = imx_should_bind,
 	.get_temp = imx_get_temp,
 	.change_mode = imx_change_mode,

drivers/thermal/intel/int340x_thermal/int3400_thermal.c

@@ -515,7 +515,7 @@ static int int3400_thermal_change_mode(struct thermal_zone_device *thermal,
 	return result;
 }
 
-static struct thermal_zone_device_ops int3400_thermal_ops = {
+static const struct thermal_zone_device_ops int3400_thermal_ops = {
 	.get_temp = int3400_thermal_get_temp,
 	.change_mode = int3400_thermal_change_mode,
 };

drivers/thermal/kirkwood_thermal.c

@@ -48,7 +48,7 @@ static int kirkwood_get_temp(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = kirkwood_get_temp,
 };
 

drivers/thermal/mediatek/lvts_thermal.c

@@ -553,7 +553,7 @@ static irqreturn_t lvts_irq_handler(int irq, void *data)
 	return iret;
 }
 
-static struct thermal_zone_device_ops lvts_ops = {
+static const struct thermal_zone_device_ops lvts_ops = {
 	.get_temp = lvts_get_temp,
 	.set_trips = lvts_set_trips,
 };

drivers/thermal/renesas/rcar_thermal.c

@@ -277,7 +277,7 @@ static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp)
 	return rcar_thermal_get_current_temp(priv, temp);
 }
 
-static struct thermal_zone_device_ops rcar_thermal_zone_ops = {
+static const struct thermal_zone_device_ops rcar_thermal_zone_ops = {
 	.get_temp	= rcar_thermal_get_temp,
 };
 

drivers/thermal/spear_thermal.c

@@ -41,7 +41,7 @@ static inline int thermal_get_temp(struct thermal_zone_device *thermal,
 	return 0;
 }
 
-static struct thermal_zone_device_ops ops = {
+static const struct thermal_zone_device_ops ops = {
 	.get_temp = thermal_get_temp,
 };
 

drivers/thermal/st/st_thermal.c

@@ -132,7 +132,7 @@ static int st_thermal_get_temp(struct thermal_zone_device *th, int *temperature)
 	return 0;
 }
 
-static struct thermal_zone_device_ops st_tz_ops = {
+static const struct thermal_zone_device_ops st_tz_ops = {
 	.get_temp	= st_thermal_get_temp,
 };