[PATCH] media: platform: allegro-dvt: Constify struct regmap_config

From: Christophe JAILLET
Date: Sun May 05 2024 - 04:04:07 EST


'allegro_regmap_config' and 'allegro_sram_config' are not modified in this
diver and are only used as a const struct regmap_config.

Constifying these structures moves some data to a read-only section, so
increase overall security.

On a x86_64, with allmodconfig:
Before:
text data bss dec hex filename
79587 3706 116 83409 145d1 drivers/media/platform/allegro-dvt/allegro-core.o

After:
text data bss dec hex filename
80219 3066 116 83401 145c9 drivers/media/platform/allegro-dvt/allegro-core.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/media/platform/allegro-dvt/allegro-core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c
index da61f9beb6b4..1a19fef62e81 100644
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -179,7 +179,7 @@ struct allegro_dev {
struct list_head channels;
};

-static struct regmap_config allegro_regmap_config = {
+static const struct regmap_config allegro_regmap_config = {
.name = "regmap",
.reg_bits = 32,
.val_bits = 32,
@@ -188,7 +188,7 @@ static struct regmap_config allegro_regmap_config = {
.cache_type = REGCACHE_NONE,
};

-static struct regmap_config allegro_sram_config = {
+static const struct regmap_config allegro_sram_config = {
.name = "sram",
.reg_bits = 32,
.val_bits = 32,
--
2.45.0