Received-SPF: pass (google.com: domain of linux-kernel+bounces-168907-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) client-ip=2604:1380:40f1:3f00::1;
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Pavel Machek <pavel@ucw.cz>,
	Lee Jones <lee@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	kernel-janitors@vger.kernel.org,
	Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
	linux-leds@vger.kernel.org
Subject: [PATCH] leds: is31fl319x: Constify struct regmap_config
Date: Sun,  5 May 2024 09:03:32 +0200
Message-ID: <82a5cb26ff8af1865a790286bdbc3c4a2bd149f1.1714892598.git.christophe.jaillet@wanadoo.fr>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

'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>
---
 drivers/leds/leds-is31fl319x.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/leds/leds-is31fl319x.c b/drivers/leds/leds-is31fl319x.c
index 66c65741202e..5e1a4d39a107 100644
--- a/drivers/leds/leds-is31fl319x.c
+++ b/drivers/leds/leds-is31fl319x.c
@@ -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,
-- 
2.45.0