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Message-ID: <5bba3bf0139e2418b306a0f9a2f1f81ef49e88a6.1748165978.git.christophe.jaillet@wanadoo.fr>
Date: Sun, 25 May 2025 11:40:04 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Zhang Rui <rui.zhang@...el.com>,
Lukasz Luba <lukasz.luba@....com>,
Support Opensource <support.opensource@...semi.com>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Fabio Estevam <festevam@...il.com>,
Niklas Söderlund <niklas.soderlund@...natech.se>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Christophe JAILLET <christophe.jaillet@...adoo.fr>,
linux-pm@...r.kernel.org,
imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org,
linux-renesas-soc@...r.kernel.org,
linux-mediatek@...ts.infradead.org
Subject: [PATCH] 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@...adoo.fr>
---
Compile tested only
---
drivers/thermal/armada_thermal.c | 2 +-
drivers/thermal/da9062-thermal.c | 2 +-
drivers/thermal/dove_thermal.c | 2 +-
drivers/thermal/imx_thermal.c | 2 +-
drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 2 +-
drivers/thermal/kirkwood_thermal.c | 2 +-
drivers/thermal/mediatek/lvts_thermal.c | 2 +-
drivers/thermal/renesas/rcar_thermal.c | 2 +-
drivers/thermal/spear_thermal.c | 2 +-
drivers/thermal/st/st_thermal.c | 2 +-
drivers/thermal/testing/zone.c | 2 +-
11 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/thermal/armada_thermal.c b/drivers/thermal/armada_thermal.c
index 9bff21068721..c2fbdb534f61 100644
--- a/drivers/thermal/armada_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/da9062-thermal.c b/drivers/thermal/da9062-thermal.c
index 2077e85ef5ca..a8d4b766ba21 100644
--- a/drivers/thermal/da9062-thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/dove_thermal.c b/drivers/thermal/dove_thermal.c
index f9157a47156b..723bc72f0626 100644
--- a/drivers/thermal/dove_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index bab52e6b3b15..38c993d1bcb3 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/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,
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index 0e07693ecf59..5736638c586b 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/kirkwood_thermal.c b/drivers/thermal/kirkwood_thermal.c
index 7c2265231668..4619e090f756 100644
--- a/drivers/thermal/kirkwood_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index 985925147ac0..acce8fde2cba 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -571,7 +571,7 @@ 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,
};
diff --git a/drivers/thermal/renesas/rcar_thermal.c b/drivers/thermal/renesas/rcar_thermal.c
index 00a66ee0a5b0..fdd7afdc4ff6 100644
--- a/drivers/thermal/renesas/rcar_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c
index bb96be947521..603dadcd3df5 100644
--- a/drivers/thermal/spear_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/st/st_thermal.c b/drivers/thermal/st/st_thermal.c
index a14a37d54698..1470ca519def 100644
--- a/drivers/thermal/st/st_thermal.c
+++ b/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,
};
diff --git a/drivers/thermal/testing/zone.c b/drivers/thermal/testing/zone.c
index 1f4e450100e2..4257d813d572 100644
--- a/drivers/thermal/testing/zone.c
+++ b/drivers/thermal/testing/zone.c
@@ -381,7 +381,7 @@ static int tt_zone_get_temp(struct thermal_zone_device *tz, int *temp)
return 0;
}
-static struct thermal_zone_device_ops tt_zone_ops = {
+static const struct thermal_zone_device_ops tt_zone_ops = {
.get_temp = tt_zone_get_temp,
};
--
2.49.0
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