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leds: is31fl319x: Constify struct regmap_config

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'is31fl3190_regmap_config' and 'is31fl3196_regmap_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
  13827	   2002	     32	  15861	   3df5	drivers/leds/leds-is31fl319x.o

After:
   text	   data	    bss	    dec	    hex	filename
  14467	   1370	     32	  15869	   3dfd	drivers/leds/leds-is31fl319x.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/82a5cb26ff8af1865a790286bdbc3c4a2bd149f1.1714892598.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Christophe JAILLET 2024-05-05 09:03:32 +02:00 committed by Lee Jones
parent 59561ccd90
commit 4a598907ef
1 changed files with 2 additions and 2 deletions
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4
drivers/leds/leds-is31fl319x.c
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@ -140,7 +140,7 @@ static const struct reg_default is31fl3190_reg_defaults[] = {
{ IS31FL3190_PWM(2), 0x00 },
};
static struct regmap_config is31fl3190_regmap_config = {
static const struct regmap_config is31fl3190_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = IS31FL3190_RESET,
@ -178,7 +178,7 @@ static const struct reg_default is31fl3196_reg_defaults[] = {
{ IS31FL3196_PWM(8), 0x00 },
};
static struct regmap_config is31fl3196_regmap_config = {
static const struct regmap_config is31fl3196_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = IS31FL3196_REG_CNT,