ASoC: cs43130: Constify struct reg_sequence and reg_sequences

'struct reg_sequence' and 'struct reg_sequences' are not modified in this
drivers.

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
  54409	   7881	     64	  62354	   f392	sound/soc/codecs/cs43130.o

After:
=====
   text	   data	    bss	    dec	    hex	filename
  55562	   6729	     64	  62355	   f393	sound/soc/codecs/cs43130.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/5b906a0cc9b7be15d0d6310069f54254a75ea767.1722951770.git.christophe.jaillet@wanadoo.fr
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/cs43130.c b/sound/soc/codecs/cs43130.c
index cb4ca80f36d28abc1d76da015b4add553a304e7a..f8e2fb69ada2d5789b2253b50a726ab5689c076b 100644 (file)
--- a/sound/soc/codecs/cs43130.c
+++ b/sound/soc/codecs/cs43130.c
@@ -1805,7 +1805,7 @@ static struct attribute *hpload_attrs[] = {
 };
 ATTRIBUTE_GROUPS(hpload);
 
-static struct reg_sequence hp_en_cal_seq[] = {
+static const struct reg_sequence hp_en_cal_seq[] = {
        {CS43130_INT_MASK_4, CS43130_INT_MASK_ALL},
        {CS43130_HP_MEAS_LOAD_1, 0},
        {CS43130_HP_MEAS_LOAD_2, 0},
@@ -1820,7 +1820,7 @@ static struct reg_sequence hp_en_cal_seq[] = {
        {CS43130_HP_LOAD_1, 0x80},
 };
 
-static struct reg_sequence hp_en_cal_seq2[] = {
+static const struct reg_sequence hp_en_cal_seq2[] = {
        {CS43130_INT_MASK_4, CS43130_INT_MASK_ALL},
        {CS43130_HP_MEAS_LOAD_1, 0},
        {CS43130_HP_MEAS_LOAD_2, 0},
@@ -1828,7 +1828,7 @@ static struct reg_sequence hp_en_cal_seq2[] = {
        {CS43130_HP_LOAD_1, 0x80},
 };
 
-static struct reg_sequence hp_dis_cal_seq[] = {
+static const struct reg_sequence hp_dis_cal_seq[] = {
        {CS43130_HP_LOAD_1, 0x80},
        {CS43130_DXD1, 0x99},
        {CS43130_DXD12, 0},
@@ -1836,12 +1836,12 @@ static struct reg_sequence hp_dis_cal_seq[] = {
        {CS43130_HP_LOAD_1, 0},
 };
 
-static struct reg_sequence hp_dis_cal_seq2[] = {
+static const struct reg_sequence hp_dis_cal_seq2[] = {
        {CS43130_HP_LOAD_1, 0x80},
        {CS43130_HP_LOAD_1, 0},
 };
 
-static struct reg_sequence hp_dc_ch_l_seq[] = {
+static const struct reg_sequence hp_dc_ch_l_seq[] = {
        {CS43130_DXD1, 0x99},
        {CS43130_DXD19, 0x0A},
        {CS43130_DXD17, 0x93},
@@ -1851,12 +1851,12 @@ static struct reg_sequence hp_dc_ch_l_seq[] = {
        {CS43130_HP_LOAD_1, 0x81},
 };
 
-static struct reg_sequence hp_dc_ch_l_seq2[] = {
+static const struct reg_sequence hp_dc_ch_l_seq2[] = {
        {CS43130_HP_LOAD_1, 0x80},
        {CS43130_HP_LOAD_1, 0x81},
 };
 
-static struct reg_sequence hp_dc_ch_r_seq[] = {
+static const struct reg_sequence hp_dc_ch_r_seq[] = {
        {CS43130_DXD1, 0x99},
        {CS43130_DXD19, 0x8A},
        {CS43130_DXD17, 0x15},
@@ -1866,12 +1866,12 @@ static struct reg_sequence hp_dc_ch_r_seq[] = {
        {CS43130_HP_LOAD_1, 0x91},
 };
 
-static struct reg_sequence hp_dc_ch_r_seq2[] = {
+static const struct reg_sequence hp_dc_ch_r_seq2[] = {
        {CS43130_HP_LOAD_1, 0x90},
        {CS43130_HP_LOAD_1, 0x91},
 };
 
-static struct reg_sequence hp_ac_ch_l_seq[] = {
+static const struct reg_sequence hp_ac_ch_l_seq[] = {
        {CS43130_DXD1, 0x99},
        {CS43130_DXD19, 0x0A},
        {CS43130_DXD17, 0x93},
@@ -1881,12 +1881,12 @@ static struct reg_sequence hp_ac_ch_l_seq[] = {
        {CS43130_HP_LOAD_1, 0x82},
 };
 
-static struct reg_sequence hp_ac_ch_l_seq2[] = {
+static const struct reg_sequence hp_ac_ch_l_seq2[] = {
        {CS43130_HP_LOAD_1, 0x80},
        {CS43130_HP_LOAD_1, 0x82},
 };
 
-static struct reg_sequence hp_ac_ch_r_seq[] = {
+static const struct reg_sequence hp_ac_ch_r_seq[] = {
        {CS43130_DXD1, 0x99},
        {CS43130_DXD19, 0x8A},
        {CS43130_DXD17, 0x15},
@@ -1896,24 +1896,24 @@ static struct reg_sequence hp_ac_ch_r_seq[] = {
        {CS43130_HP_LOAD_1, 0x92},
 };
 
-static struct reg_sequence hp_ac_ch_r_seq2[] = {
+static const struct reg_sequence hp_ac_ch_r_seq2[] = {
        {CS43130_HP_LOAD_1, 0x90},
        {CS43130_HP_LOAD_1, 0x92},
 };
 
-static struct reg_sequence hp_cln_seq[] = {
+static const struct reg_sequence hp_cln_seq[] = {
        {CS43130_INT_MASK_4, CS43130_INT_MASK_ALL},
        {CS43130_HP_MEAS_LOAD_1, 0},
        {CS43130_HP_MEAS_LOAD_2, 0},
 };
 
 struct reg_sequences {
-       struct reg_sequence     *seq;
-       int                     size;
-       unsigned int            msk;
+       const struct reg_sequence       *seq;
+       int                             size;
+       unsigned int                    msk;
 };
 
-static struct reg_sequences hpload_seq1[] = {
+static const struct reg_sequences hpload_seq1[] = {
        {
                .seq    = hp_en_cal_seq,
                .size   = ARRAY_SIZE(hp_en_cal_seq),
@@ -1951,7 +1951,7 @@ static struct reg_sequences hpload_seq1[] = {
        },
 };
 
-static struct reg_sequences hpload_seq2[] = {
+static const struct reg_sequences hpload_seq2[] = {
        {
                .seq    = hp_en_cal_seq2,
                .size   = ARRAY_SIZE(hp_en_cal_seq2),
@@ -2041,7 +2041,7 @@ static int cs43130_update_hpload(unsigned int msk, int ac_idx,
 }
 
 static int cs43130_hpload_proc(struct cs43130_private *cs43130,
-                              struct reg_sequence *seq, int seq_size,
+                              const struct reg_sequence *seq, int seq_size,
                               unsigned int rslt_msk, int ac_idx)
 {
        int ret;
@@ -2122,7 +2122,7 @@ static void cs43130_imp_meas(struct work_struct *wk)
        int i, ret, ac_idx;
        struct cs43130_private *cs43130;
        struct snd_soc_component *component;
-       struct reg_sequences *hpload_seq;
+       const struct reg_sequences *hpload_seq;
 
        cs43130 = container_of(wk, struct cs43130_private, work);
        component = cs43130->component;