[PATCH] ASoC: rt1318: Constify struct reg_sequence

From: Christophe JAILLET
Date: Tue Aug 06 2024 - 10:03:35 EST


'struct reg_sequence' is not modified in this driver.

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

While at it, remove rt1318_INIT_REG_LEN which is ununsed.

On a x86_64, with allmodconfig:
Before:
======
text data bss dec hex filename
22062 4859 32 26953 6949 sound/soc/codecs/rt1318.o

After:
=====
text data bss dec hex filename
24742 2171 32 26945 6941 sound/soc/codecs/rt1318.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
Compile tested-only.
---
sound/soc/codecs/rt1318.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/soc/codecs/rt1318.c b/sound/soc/codecs/rt1318.c
index 83b29b441be9..e12b1e96a53a 100644
--- a/sound/soc/codecs/rt1318.c
+++ b/sound/soc/codecs/rt1318.c
@@ -30,7 +30,7 @@

#include "rt1318.h"

-static struct reg_sequence init_list[] = {
+static const struct reg_sequence init_list[] = {
{ 0x0000C000, 0x01},
{ 0x0000F20D, 0x00},
{ 0x0000F212, 0x3E},
@@ -254,7 +254,6 @@ static struct reg_sequence init_list[] = {
{ 0x0000C320, 0x20},
{ 0x0000C203, 0x9C},
};
-#define rt1318_INIT_REG_LEN ARRAY_SIZE(init_list)

static const struct reg_default rt1318_reg[] = {
{ 0xc000, 0x00 },
--
2.45.2