linux-kernel - [PATCH] ASoC: samsung: Constify snd_soc_dapm

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Date:   Wed, 30 Mar 2022 22:42:27 +0200
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
        Andreas Färber <afaerber@...e.de>,
        Manivannan Sadhasivam <mani@...nel.org>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-actions@...ts.infradead.org,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH] ASoC: samsung: Constify snd_soc_dapm_{route,widget} structs

These structs only have their address assigned to the
dapm_{routes,widget} fields in the snd_soc_card struct,
both which are pointers to const data. Make them const to
allow the compiler to put them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 sound/soc/samsung/bells.c      | 4 ++--
 sound/soc/samsung/littlemill.c | 4 ++--
 sound/soc/samsung/lowland.c    | 4 ++--
 sound/soc/samsung/speyside.c   | 4 ++--
 sound/soc/samsung/tobermory.c  | 4 ++--
 5 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/sound/soc/samsung/bells.c b/sound/soc/samsung/bells.c
index 8b83f39c3ac9..76998a4a4cad 100644
--- a/sound/soc/samsung/bells.c
+++ b/sound/soc/samsung/bells.c
@@ -386,11 +386,11 @@ static struct snd_soc_codec_conf bells_codec_conf[] = {
 	},
 };
 
-static struct snd_soc_dapm_widget bells_widgets[] = {
+static const struct snd_soc_dapm_widget bells_widgets[] = {
 	SND_SOC_DAPM_MIC("DMIC", NULL),
 };
 
-static struct snd_soc_dapm_route bells_routes[] = {
+static const struct snd_soc_dapm_route bells_routes[] = {
 	{ "Sub CLK_SYS", NULL, "OPCLK" },
 	{ "CLKIN", NULL, "OPCLK" },
 
diff --git a/sound/soc/samsung/littlemill.c b/sound/soc/samsung/littlemill.c
index 34067cc314ff..26c42892c059 100644
--- a/sound/soc/samsung/littlemill.c
+++ b/sound/soc/samsung/littlemill.c
@@ -228,7 +228,7 @@ static const struct snd_kcontrol_new controls[] = {
 	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
 };
 
-static struct snd_soc_dapm_widget widgets[] = {
+static const struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 
 	SND_SOC_DAPM_MIC("AMIC", NULL),
@@ -239,7 +239,7 @@ static struct snd_soc_dapm_widget widgets[] = {
 			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
 };
 
-static struct snd_soc_dapm_route audio_paths[] = {
+static const struct snd_soc_dapm_route audio_paths[] = {
 	{ "Headphone", NULL, "HPOUT1L" },
 	{ "Headphone", NULL, "HPOUT1R" },
 
diff --git a/sound/soc/samsung/lowland.c b/sound/soc/samsung/lowland.c
index 7b12ccd2a9b2..8e4579fdcd7b 100644
--- a/sound/soc/samsung/lowland.c
+++ b/sound/soc/samsung/lowland.c
@@ -140,7 +140,7 @@ static const struct snd_kcontrol_new controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 };
 
-static struct snd_soc_dapm_widget widgets[] = {
+static const struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 
@@ -150,7 +150,7 @@ static struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_MIC("Main DMIC", NULL),
 };
 
-static struct snd_soc_dapm_route audio_paths[] = {
+static const struct snd_soc_dapm_route audio_paths[] = {
 	{ "Sub IN1", NULL, "HPOUT2L" },
 	{ "Sub IN2", NULL, "HPOUT2R" },
 
diff --git a/sound/soc/samsung/speyside.c b/sound/soc/samsung/speyside.c
index 37b1f4f60b21..1ae1a5aae72f 100644
--- a/sound/soc/samsung/speyside.c
+++ b/sound/soc/samsung/speyside.c
@@ -261,7 +261,7 @@ static const struct snd_kcontrol_new controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 };
 
-static struct snd_soc_dapm_widget widgets[] = {
+static const struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 
@@ -271,7 +271,7 @@ static struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_MIC("Main DMIC", NULL),
 };
 
-static struct snd_soc_dapm_route audio_paths[] = {
+static const struct snd_soc_dapm_route audio_paths[] = {
 	{ "IN1RN", NULL, "MICB1" },
 	{ "IN1RP", NULL, "MICB1" },
 	{ "IN1RN", NULL, "MICB2" },
diff --git a/sound/soc/samsung/tobermory.c b/sound/soc/samsung/tobermory.c
index 8d3149a47a4c..4a56abfc243e 100644
--- a/sound/soc/samsung/tobermory.c
+++ b/sound/soc/samsung/tobermory.c
@@ -130,7 +130,7 @@ static const struct snd_kcontrol_new controls[] = {
 	SOC_DAPM_PIN_SWITCH("DMIC"),
 };
 
-static struct snd_soc_dapm_widget widgets[] = {
+static const struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
 
@@ -140,7 +140,7 @@ static struct snd_soc_dapm_widget widgets[] = {
 	SND_SOC_DAPM_SPK("Main Speaker", NULL),
 };
 
-static struct snd_soc_dapm_route audio_paths[] = {
+static const struct snd_soc_dapm_route audio_paths[] = {
 	{ "Headphone", NULL, "HPOUTL" },
 	{ "Headphone", NULL, "HPOUTR" },
 
-- 
2.35.1