diff --git a/sound/soc/codecs/cs35l32.c b/sound/soc/codecs/cs35l32.c
index 76564dc..094201d 100644
--- a/sound/soc/codecs/cs35l32.c
+++ b/sound/soc/codecs/cs35l32.c
@@ -74,33 +74,8 @@
 static bool cs35l32_readable_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case CS35L32_DEVID_AB:
-	case CS35L32_DEVID_CD:
-	case CS35L32_DEVID_E:
-	case CS35L32_FAB_ID:
-	case CS35L32_REV_ID:
-	case CS35L32_PWRCTL1:
-	case CS35L32_PWRCTL2:
-	case CS35L32_CLK_CTL:
-	case CS35L32_BATT_THRESHOLD:
-	case CS35L32_VMON:
-	case CS35L32_BST_CPCP_CTL:
-	case CS35L32_IMON_SCALING:
-	case CS35L32_AUDIO_LED_MNGR:
-	case CS35L32_ADSP_CTL:
-	case CS35L32_CLASSD_CTL:
-	case CS35L32_PROTECT_CTL:
-	case CS35L32_INT_MASK_1:
-	case CS35L32_INT_MASK_2:
-	case CS35L32_INT_MASK_3:
-	case CS35L32_INT_STATUS_1:
-	case CS35L32_INT_STATUS_2:
-	case CS35L32_INT_STATUS_3:
-	case CS35L32_LED_STATUS:
-	case CS35L32_FLASH_MODE:
-	case CS35L32_MOVIE_MODE:
-	case CS35L32_FLASH_TIMER:
-	case CS35L32_FLASH_INHIBIT:
+	case CS35L32_DEVID_AB ... CS35L32_AUDIO_LED_MNGR:
+	case CS35L32_ADSP_CTL ... CS35L32_FLASH_INHIBIT:
 		return true;
 	default:
 		return false;
@@ -110,15 +85,8 @@
 static bool cs35l32_volatile_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case CS35L32_DEVID_AB:
-	case CS35L32_DEVID_CD:
-	case CS35L32_DEVID_E:
-	case CS35L32_FAB_ID:
-	case CS35L32_REV_ID:
-	case CS35L32_INT_STATUS_1:
-	case CS35L32_INT_STATUS_2:
-	case CS35L32_INT_STATUS_3:
-	case CS35L32_LED_STATUS:
+	case CS35L32_DEVID_AB ... CS35L32_REV_ID:
+	case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
 		return true;
 	default:
 		return false;
@@ -128,10 +96,7 @@
 static bool cs35l32_precious_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case CS35L32_INT_STATUS_1:
-	case CS35L32_INT_STATUS_2:
-	case CS35L32_INT_STATUS_3:
-	case CS35L32_LED_STATUS:
+	case CS35L32_INT_STATUS_1 ... CS35L32_LED_STATUS:
 		return true;
 	default:
 		return false;
@@ -441,8 +406,7 @@
 	if (IS_ERR(cs35l32->reset_gpio))
 		return PTR_ERR(cs35l32->reset_gpio);
 
-	if (cs35l32->reset_gpio)
-		gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
+	gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 
 	/* initialize codec */
 	ret = regmap_read(cs35l32->regmap, CS35L32_DEVID_AB, &reg);
@@ -536,8 +500,7 @@
 	snd_soc_unregister_codec(&i2c_client->dev);
 
 	/* Hold down reset */
-	if (cs35l32->reset_gpio)
-		gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
+	gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 
 	return 0;
 }
@@ -551,8 +514,7 @@
 	regcache_mark_dirty(cs35l32->regmap);
 
 	/* Hold down reset */
-	if (cs35l32->reset_gpio)
-		gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
+	gpiod_set_value_cansleep(cs35l32->reset_gpio, 0);
 
 	/* remove power */
 	regulator_bulk_disable(ARRAY_SIZE(cs35l32->supplies),
@@ -575,8 +537,7 @@
 		return ret;
 	}
 
-	if (cs35l32->reset_gpio)
-		gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
+	gpiod_set_value_cansleep(cs35l32->reset_gpio, 1);
 
 	regcache_cache_only(cs35l32->regmap, false);
 	regcache_sync(cs35l32->regmap);
diff --git a/sound/soc/codecs/cs35l32.h b/sound/soc/codecs/cs35l32.h
index 31ab804..1d6c250 100644
--- a/sound/soc/codecs/cs35l32.h
+++ b/sound/soc/codecs/cs35l32.h
@@ -80,7 +80,7 @@
 #define CS35L32_GAIN_MGR_MASK		0x08
 #define CS35L32_ADSP_SHARE_MASK		0x08
 #define CS35L32_ADSP_DATACFG_MASK	0x30
-#define CS35L32_SDOUT_3ST		0x80
+#define CS35L32_SDOUT_3ST		0x08
 #define CS35L32_BATT_REC_MASK		0x0E
 #define CS35L32_BATT_THRESH_MASK	0x30
 
diff --git a/sound/soc/codecs/cs4265.c b/sound/soc/codecs/cs4265.c
index e42a503..55db19d 100644
--- a/sound/soc/codecs/cs4265.c
+++ b/sound/soc/codecs/cs4265.c
@@ -60,23 +60,7 @@
 static bool cs4265_readable_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case CS4265_PWRCTL:
-	case CS4265_DAC_CTL:
-	case CS4265_ADC_CTL:
-	case CS4265_MCLK_FREQ:
-	case CS4265_SIG_SEL:
-	case CS4265_CHB_PGA_CTL:
-	case CS4265_CHA_PGA_CTL:
-	case CS4265_ADC_CTL2:
-	case CS4265_DAC_CHA_VOL:
-	case CS4265_DAC_CHB_VOL:
-	case CS4265_DAC_CTL2:
-	case CS4265_SPDIF_CTL1:
-	case CS4265_SPDIF_CTL2:
-	case CS4265_INT_MASK:
-	case CS4265_STATUS_MODE_MSB:
-	case CS4265_STATUS_MODE_LSB:
-	case CS4265_CHIP_ID:
+	case CS4265_CHIP_ID ... CS4265_SPDIF_CTL2:
 		return true;
 	default:
 		return false;
diff --git a/sound/soc/codecs/cs42l52.c b/sound/soc/codecs/cs42l52.c
index b82d8e5..f4f41b2 100644
--- a/sound/soc/codecs/cs42l52.c
+++ b/sound/soc/codecs/cs42l52.c
@@ -110,58 +110,7 @@
 static bool cs42l52_readable_register(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
-	case CS42L52_CHIP:
-	case CS42L52_PWRCTL1:
-	case CS42L52_PWRCTL2:
-	case CS42L52_PWRCTL3:
-	case CS42L52_CLK_CTL:
-	case CS42L52_IFACE_CTL1:
-	case CS42L52_IFACE_CTL2:
-	case CS42L52_ADC_PGA_A:
-	case CS42L52_ADC_PGA_B:
-	case CS42L52_ANALOG_HPF_CTL:
-	case CS42L52_ADC_HPF_FREQ:
-	case CS42L52_ADC_MISC_CTL:
-	case CS42L52_PB_CTL1:
-	case CS42L52_MISC_CTL:
-	case CS42L52_PB_CTL2:
-	case CS42L52_MICA_CTL:
-	case CS42L52_MICB_CTL:
-	case CS42L52_PGAA_CTL:
-	case CS42L52_PGAB_CTL:
-	case CS42L52_PASSTHRUA_VOL:
-	case CS42L52_PASSTHRUB_VOL:
-	case CS42L52_ADCA_VOL:
-	case CS42L52_ADCB_VOL:
-	case CS42L52_ADCA_MIXER_VOL:
-	case CS42L52_ADCB_MIXER_VOL:
-	case CS42L52_PCMA_MIXER_VOL:
-	case CS42L52_PCMB_MIXER_VOL:
-	case CS42L52_BEEP_FREQ:
-	case CS42L52_BEEP_VOL:
-	case CS42L52_BEEP_TONE_CTL:
-	case CS42L52_TONE_CTL:
-	case CS42L52_MASTERA_VOL:
-	case CS42L52_MASTERB_VOL:
-	case CS42L52_HPA_VOL:
-	case CS42L52_HPB_VOL:
-	case CS42L52_SPKA_VOL:
-	case CS42L52_SPKB_VOL:
-	case CS42L52_ADC_PCM_MIXER:
-	case CS42L52_LIMITER_CTL1:
-	case CS42L52_LIMITER_CTL2:
-	case CS42L52_LIMITER_AT_RATE:
-	case CS42L52_ALC_CTL:
-	case CS42L52_ALC_RATE:
-	case CS42L52_ALC_THRESHOLD:
-	case CS42L52_NOISE_GATE_CTL:
-	case CS42L52_CLK_STATUS:
-	case CS42L52_BATT_COMPEN:
-	case CS42L52_BATT_LEVEL:
-	case CS42L52_SPK_STATUS:
-	case CS42L52_TEM_CTL:
-	case CS42L52_THE_FOLDBACK:
-	case CS42L52_CHARGE_PUMP:
+	case CS42L52_CHIP ... CS42L52_CHARGE_PUMP:
 		return true;
 	default:
 		return false;
@@ -919,7 +868,7 @@
 			SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_U20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_U24_LE)
 
-static struct snd_soc_dai_ops cs42l52_ops = {
+static const struct snd_soc_dai_ops cs42l52_ops = {
 	.hw_params	= cs42l52_pcm_hw_params,
 	.digital_mute	= cs42l52_digital_mute,
 	.set_fmt	= cs42l52_set_fmt,
diff --git a/sound/soc/codecs/cs42l56.c b/sound/soc/codecs/cs42l56.c
index 4ae7933..1944c0e 100644
--- a/sound/soc/codecs/cs42l56.c
+++ b/sound/soc/codecs/cs42l56.c
@@ -989,7 +989,7 @@
 			SNDRV_PCM_FMTBIT_S32_LE)
 
 
-static struct snd_soc_dai_ops cs42l56_ops = {
+static const struct snd_soc_dai_ops cs42l56_ops = {
 	.hw_params	= cs42l56_pcm_hw_params,
 	.digital_mute	= cs42l56_digital_mute,
 	.set_fmt	= cs42l56_set_dai_fmt,
diff --git a/sound/soc/codecs/isabelle.c b/sound/soc/codecs/isabelle.c
index 58a43b1..6bb8e6b 100644
--- a/sound/soc/codecs/isabelle.c
+++ b/sound/soc/codecs/isabelle.c
@@ -1016,25 +1016,25 @@
 #define ISABELLE_FORMATS (SNDRV_PCM_FMTBIT_S20_3LE |\
 			SNDRV_PCM_FMTBIT_S32_LE)
 
-static struct snd_soc_dai_ops isabelle_hs_dai_ops = {
+static const struct snd_soc_dai_ops isabelle_hs_dai_ops = {
 	.hw_params	= isabelle_hw_params,
 	.set_fmt	= isabelle_set_dai_fmt,
 	.digital_mute	= isabelle_hs_mute,
 };
 
-static struct snd_soc_dai_ops isabelle_hf_dai_ops = {
+static const struct snd_soc_dai_ops isabelle_hf_dai_ops = {
 	.hw_params	= isabelle_hw_params,
 	.set_fmt	= isabelle_set_dai_fmt,
 	.digital_mute	= isabelle_hf_mute,
 };
 
-static struct snd_soc_dai_ops isabelle_line_dai_ops = {
+static const struct snd_soc_dai_ops isabelle_line_dai_ops = {
 	.hw_params	= isabelle_hw_params,
 	.set_fmt	= isabelle_set_dai_fmt,
 	.digital_mute	= isabelle_line_mute,
 };
 
-static struct snd_soc_dai_ops isabelle_ul_dai_ops = {
+static const struct snd_soc_dai_ops isabelle_ul_dai_ops = {
 	.hw_params	= isabelle_hw_params,
 	.set_fmt	= isabelle_set_dai_fmt,
 };
diff --git a/sound/soc/codecs/lm49453.c b/sound/soc/codecs/lm49453.c
index 9b2e383..67163ac 100644
--- a/sound/soc/codecs/lm49453.c
+++ b/sound/soc/codecs/lm49453.c
@@ -1291,35 +1291,35 @@
 #define LM49453_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 			 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 
-static struct snd_soc_dai_ops lm49453_headset_dai_ops = {
+static const struct snd_soc_dai_ops lm49453_headset_dai_ops = {
 	.hw_params	= lm49453_hw_params,
 	.set_sysclk	= lm49453_set_dai_sysclk,
 	.set_fmt	= lm49453_set_dai_fmt,
 	.digital_mute	= lm49453_hp_mute,
 };
 
-static struct snd_soc_dai_ops lm49453_speaker_dai_ops = {
+static const struct snd_soc_dai_ops lm49453_speaker_dai_ops = {
 	.hw_params	= lm49453_hw_params,
 	.set_sysclk	= lm49453_set_dai_sysclk,
 	.set_fmt	= lm49453_set_dai_fmt,
 	.digital_mute	= lm49453_ls_mute,
 };
 
-static struct snd_soc_dai_ops lm49453_haptic_dai_ops = {
+static const struct snd_soc_dai_ops lm49453_haptic_dai_ops = {
 	.hw_params	= lm49453_hw_params,
 	.set_sysclk	= lm49453_set_dai_sysclk,
 	.set_fmt	= lm49453_set_dai_fmt,
 	.digital_mute	= lm49453_ha_mute,
 };
 
-static struct snd_soc_dai_ops lm49453_ep_dai_ops = {
+static const struct snd_soc_dai_ops lm49453_ep_dai_ops = {
 	.hw_params	= lm49453_hw_params,
 	.set_sysclk	= lm49453_set_dai_sysclk,
 	.set_fmt	= lm49453_set_dai_fmt,
 	.digital_mute	= lm49453_ep_mute,
 };
 
-static struct snd_soc_dai_ops lm49453_lineout_dai_ops = {
+static const struct snd_soc_dai_ops lm49453_lineout_dai_ops = {
 	.hw_params	= lm49453_hw_params,
 	.set_sysclk	= lm49453_set_dai_sysclk,
 	.set_fmt	= lm49453_set_dai_fmt,
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index c09196f..e09c130 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -2400,7 +2400,7 @@
 #define MAX98090_RATES SNDRV_PCM_RATE_8000_96000
 #define MAX98090_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE)
 
-static struct snd_soc_dai_ops max98090_dai_ops = {
+static const struct snd_soc_dai_ops max98090_dai_ops = {
 	.set_sysclk = max98090_dai_set_sysclk,
 	.set_fmt = max98090_dai_set_fmt,
 	.set_tdm_slot = max98090_set_tdm_slot,
diff --git a/sound/soc/codecs/max98357a.c b/sound/soc/codecs/max98357a.c
index 3a2fda0..c4a211d 100644
--- a/sound/soc/codecs/max98357a.c
+++ b/sound/soc/codecs/max98357a.c
@@ -79,7 +79,7 @@
 	.num_dapm_routes	= ARRAY_SIZE(max98357a_dapm_routes),
 };
 
-static struct snd_soc_dai_ops max98357a_dai_ops = {
+static const struct snd_soc_dai_ops max98357a_dai_ops = {
 	.trigger	= max98357a_daiops_trigger,
 };
 
diff --git a/sound/soc/codecs/mc13783.c b/sound/soc/codecs/mc13783.c
index 3d44fc5..3e770cb 100644
--- a/sound/soc/codecs/mc13783.c
+++ b/sound/soc/codecs/mc13783.c
@@ -650,14 +650,14 @@
 #define MC13783_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
 	SNDRV_PCM_FMTBIT_S24_LE)
 
-static struct snd_soc_dai_ops mc13783_ops_dac = {
+static const struct snd_soc_dai_ops mc13783_ops_dac = {
 	.hw_params	= mc13783_pcm_hw_params_dac,
 	.set_fmt	= mc13783_set_fmt_async,
 	.set_sysclk	= mc13783_set_sysclk_dac,
 	.set_tdm_slot	= mc13783_set_tdm_slot_dac,
 };
 
-static struct snd_soc_dai_ops mc13783_ops_codec = {
+static const struct snd_soc_dai_ops mc13783_ops_codec = {
 	.hw_params	= mc13783_pcm_hw_params_codec,
 	.set_fmt	= mc13783_set_fmt_async,
 	.set_sysclk	= mc13783_set_sysclk_codec,
@@ -698,7 +698,7 @@
 	},
 };
 
-static struct snd_soc_dai_ops mc13783_ops_sync = {
+static const struct snd_soc_dai_ops mc13783_ops_sync = {
 	.hw_params	= mc13783_pcm_hw_params_sync,
 	.set_fmt	= mc13783_set_fmt_sync,
 	.set_sysclk	= mc13783_set_sysclk_sync,
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index e0954fa..3614340 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3079,7 +3079,7 @@
 #define RT5645_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
 
-static struct snd_soc_dai_ops rt5645_aif_dai_ops = {
+static const struct snd_soc_dai_ops rt5645_aif_dai_ops = {
 	.hw_params = rt5645_hw_params,
 	.set_fmt = rt5645_set_dai_fmt,
 	.set_sysclk = rt5645_set_dai_sysclk,
diff --git a/sound/soc/codecs/rt5670.c b/sound/soc/codecs/rt5670.c
index 8f9ab2b..d5bf49d 100644
--- a/sound/soc/codecs/rt5670.c
+++ b/sound/soc/codecs/rt5670.c
@@ -2720,7 +2720,7 @@
 #define RT5670_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
 
-static struct snd_soc_dai_ops rt5670_aif_dai_ops = {
+static const struct snd_soc_dai_ops rt5670_aif_dai_ops = {
 	.hw_params = rt5670_hw_params,
 	.set_fmt = rt5670_set_dai_fmt,
 	.set_sysclk = rt5670_set_dai_sysclk,
diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 03afec7..2313fbf 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -4863,7 +4863,7 @@
 #define RT5677_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
 			SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S8)
 
-static struct snd_soc_dai_ops rt5677_aif_dai_ops = {
+static const struct snd_soc_dai_ops rt5677_aif_dai_ops = {
 	.hw_params = rt5677_hw_params,
 	.set_fmt = rt5677_set_dai_fmt,
 	.set_sysclk = rt5677_set_dai_sysclk,
diff --git a/sound/soc/codecs/si476x.c b/sound/soc/codecs/si476x.c
index 3e72964..a8402d0 100644
--- a/sound/soc/codecs/si476x.c
+++ b/sound/soc/codecs/si476x.c
@@ -208,7 +208,7 @@
 	return err;
 }
 
-static struct snd_soc_dai_ops si476x_dai_ops = {
+static const struct snd_soc_dai_ops si476x_dai_ops = {
 	.hw_params	= si476x_codec_hw_params,
 	.set_fmt	= si476x_codec_set_dai_fmt,
 };
diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index 083b6b3..5e0a8a5 100644
--- a/sound/soc/codecs/tas2552.c
+++ b/sound/soc/codecs/tas2552.c
@@ -520,7 +520,7 @@
 			   NULL)
 };
 
-static struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
+static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = {
 	.hw_params	= tas2552_hw_params,
 	.prepare	= tas2552_prepare,
 	.set_sysclk	= tas2552_set_dai_sysclk,
diff --git a/sound/soc/codecs/tlv320aic31xx.c b/sound/soc/codecs/tlv320aic31xx.c
index 48dd9b2..ee4def4 100644
--- a/sound/soc/codecs/tlv320aic31xx.c
+++ b/sound/soc/codecs/tlv320aic31xx.c
@@ -1121,7 +1121,7 @@
 	.num_dapm_routes	= ARRAY_SIZE(aic31xx_audio_map),
 };
 
-static struct snd_soc_dai_ops aic31xx_dai_ops = {
+static const struct snd_soc_dai_ops aic31xx_dai_ops = {
 	.hw_params	= aic31xx_hw_params,
 	.set_sysclk	= aic31xx_set_dai_sysclk,
 	.set_fmt	= aic31xx_set_dai_fmt,