[PATCH] ASoC: tegra: constify snd_soc_ops structures

From: Julia Lawall
Date: Sat Oct 15 2016 - 10:55:51 EST

Check for snd_soc_ops structures that are only stored in the ops field of a
snd_soc_dai_link structure. This field is declared const, so snd_soc_ops
structures that have this property can be declared as const also.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct snd_soc_ops i@p = { ... };

@ok1@
identifier r.i;
struct snd_soc_dai_link e;
position p;
@@
e.ops = &i@p;

@ok2@
identifier r.i, e;
position p;
@@
struct snd_soc_dai_link e[] = { ..., { .ops = &i@p, }, ..., };

@bad@
position p != {r.p,ok1.p,ok2.p};
identifier r.i;
struct snd_soc_ops e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
struct snd_soc_ops i = { ... };
// </smpl>

The effect on the layout of the .o files is shown by the following output of
the size command, first before then after the transformation:

text data bss dec hex filename
3143 1888 384 5415 1527 sound/soc/tegra/tegra_alc5632.o
3191 1840 384 5415 1527 sound/soc/tegra/tegra_alc5632.o

text data bss dec hex filename
3672 2176 768 6616 19d8 sound/soc/tegra/tegra_max98090.o
3720 2128 768 6616 19d8 sound/soc/tegra/tegra_max98090.o

text data bss dec hex filename
2770 1856 384 5010 1392 sound/soc/tegra/tegra_rt5640.o
2818 1808 384 5010 1392 sound/soc/tegra/tegra_rt5640.o

text data bss dec hex filename
4412 2176 768 7356 1cbc sound/soc/tegra/tegra_rt5677.o
4460 2128 768 7356 1cbc sound/soc/tegra/tegra_rt5677.o

text data bss dec hex filename
2442 1536 0 3978 f8a sound/soc/tegra/tegra_sgtl5000.o
2490 1480 0 3970 f82 sound/soc/tegra/tegra_sgtl5000.o

text data bss dec hex filename
2105 1536 0 3641 e39 sound/soc/tegra/tegra_wm8753.o
2153 1480 0 3633 e31 sound/soc/tegra/tegra_wm8753.o

text data bss dec hex filename
3755 1888 768 6411 190b sound/soc/tegra/tegra_wm8903.o
3803 1840 768 6411 190b sound/soc/tegra/tegra_wm8903.o

text data bss dec hex filename
2121 1536 0 3657 e49 sound/soc/tegra/trimslice.o
2169 1480 0 3649 e41 sound/soc/tegra/trimslice.o

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
sound/soc/tegra/tegra_alc5632.c | 2 +-
sound/soc/tegra/tegra_max98090.c | 2 +-
sound/soc/tegra/tegra_rt5640.c | 2 +-
sound/soc/tegra/tegra_rt5677.c | 2 +-
sound/soc/tegra/tegra_sgtl5000.c | 2 +-
sound/soc/tegra/tegra_wm8753.c | 2 +-
sound/soc/tegra/tegra_wm8903.c | 2 +-
sound/soc/tegra/trimslice.c | 2 +-
8 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/sound/soc/tegra/tegra_alc5632.c b/sound/soc/tegra/tegra_alc5632.c
index deb597f7c302..eead6e7f205b 100644
--- a/sound/soc/tegra/tegra_alc5632.c
+++ b/sound/soc/tegra/tegra_alc5632.c
@@ -65,7 +65,7 @@ static int tegra_alc5632_asoc_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_alc5632_asoc_ops = {
+static const struct snd_soc_ops tegra_alc5632_asoc_ops = {
.hw_params = tegra_alc5632_asoc_hw_params,
};

diff --git a/sound/soc/tegra/tegra_max98090.c b/sound/soc/tegra/tegra_max98090.c
index 902da36581d1..a403db6d563e 100644
--- a/sound/soc/tegra/tegra_max98090.c
+++ b/sound/soc/tegra/tegra_max98090.c
@@ -93,7 +93,7 @@ static int tegra_max98090_asoc_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_max98090_ops = {
+static const struct snd_soc_ops tegra_max98090_ops = {
.hw_params = tegra_max98090_asoc_hw_params,
};

diff --git a/sound/soc/tegra/tegra_rt5640.c b/sound/soc/tegra/tegra_rt5640.c
index e5ef4e9c4ac5..25b9fc03ba62 100644
--- a/sound/soc/tegra/tegra_rt5640.c
+++ b/sound/soc/tegra/tegra_rt5640.c
@@ -76,7 +76,7 @@ static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_rt5640_ops = {
+static const struct snd_soc_ops tegra_rt5640_ops = {
.hw_params = tegra_rt5640_asoc_hw_params,
};

diff --git a/sound/soc/tegra/tegra_rt5677.c b/sound/soc/tegra/tegra_rt5677.c
index 1470873ecde6..ebf58d0e0f10 100644
--- a/sound/soc/tegra/tegra_rt5677.c
+++ b/sound/soc/tegra/tegra_rt5677.c
@@ -93,7 +93,7 @@ static int tegra_rt5677_event_hp(struct snd_soc_dapm_widget *w,
return 0;
}

-static struct snd_soc_ops tegra_rt5677_ops = {
+static const struct snd_soc_ops tegra_rt5677_ops = {
.hw_params = tegra_rt5677_asoc_hw_params,
};

diff --git a/sound/soc/tegra/tegra_sgtl5000.c b/sound/soc/tegra/tegra_sgtl5000.c
index 1e76869dd488..4bbab098f50b 100644
--- a/sound/soc/tegra/tegra_sgtl5000.c
+++ b/sound/soc/tegra/tegra_sgtl5000.c
@@ -82,7 +82,7 @@ static int tegra_sgtl5000_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_sgtl5000_ops = {
+static const struct snd_soc_ops tegra_sgtl5000_ops = {
.hw_params = tegra_sgtl5000_hw_params,
};

diff --git a/sound/soc/tegra/tegra_wm8753.c b/sound/soc/tegra/tegra_wm8753.c
index f0cd01dbfc38..bdedd1028569 100644
--- a/sound/soc/tegra/tegra_wm8753.c
+++ b/sound/soc/tegra/tegra_wm8753.c
@@ -89,7 +89,7 @@ static int tegra_wm8753_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_wm8753_ops = {
+static const struct snd_soc_ops tegra_wm8753_ops = {
.hw_params = tegra_wm8753_hw_params,
};

diff --git a/sound/soc/tegra/tegra_wm8903.c b/sound/soc/tegra/tegra_wm8903.c
index e485278e027a..2013e9c4bba0 100644
--- a/sound/soc/tegra/tegra_wm8903.c
+++ b/sound/soc/tegra/tegra_wm8903.c
@@ -96,7 +96,7 @@ static int tegra_wm8903_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops tegra_wm8903_ops = {
+static const struct snd_soc_ops tegra_wm8903_ops = {
.hw_params = tegra_wm8903_hw_params,
};

diff --git a/sound/soc/tegra/trimslice.c b/sound/soc/tegra/trimslice.c
index 2cea203c4f5f..870f84ab5005 100644
--- a/sound/soc/tegra/trimslice.c
+++ b/sound/soc/tegra/trimslice.c
@@ -74,7 +74,7 @@ static int trimslice_asoc_hw_params(struct snd_pcm_substream *substream,
return 0;
}

-static struct snd_soc_ops trimslice_asoc_ops = {
+static const struct snd_soc_ops trimslice_asoc_ops = {
.hw_params = trimslice_asoc_hw_params,
};

--
2.8.1