Commit ddba7fa4 authored by Julia Lawall's avatar Julia Lawall Committed by Mark Brown

ASoC: constify snd_soc_ops structures

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
   8748    1024       0    9772    262c sound/soc/fsl/fsl-asoc-card.o
   8812     952       0    9764    2624 sound/soc/fsl/fsl-asoc-card.o

   text    data     bss     dec     hex filename
   4165     264       8    4437    1155 sound/soc/fsl/imx-wm8962.o
   4229     200       8    4437    1155 sound/soc/fsl/imx-wm8962.o
Signed-off-by: default avatarJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 9b6fdef6
......@@ -183,7 +183,7 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream,
return 0;
}
static struct snd_soc_ops fsl_asoc_card_ops = {
static const struct snd_soc_ops fsl_asoc_card_ops = {
.hw_params = fsl_asoc_card_hw_params,
};
......
......@@ -61,7 +61,7 @@ static int imx_hifi_hw_params(struct snd_pcm_substream *substream,
return 0;
}
static struct snd_soc_ops imx_hifi_ops = {
static const struct snd_soc_ops imx_hifi_ops = {
.hw_params = imx_hifi_hw_params,
};
......
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