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ALSA: ad1889: constify snd_pcm_ops structures

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Check for snd_pcm_ops structures that are only stored in the ops field of a
snd_soc_platform_driver structure or passed as the third argument to
snd_pcm_set_ops.  The corresponding field or parameter is declared const,
so snd_pcm_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_pcm_ops i@p = { ... };

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

@ok2@
identifier r.i;
expression e1, e2;
position p;
@@
snd_pcm_set_ops(e1, e2, &i@p)

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

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

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Julia Lawall 2016-09-02 00:13:12 +02:00 committed by Takashi Iwai
parent 5116ffc32d
commit d602efcaf5
1 changed files with 2 additions and 2 deletions
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4
sound/pci/ad1889.c
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@ -571,7 +571,7 @@ snd_ad1889_capture_pointer(struct snd_pcm_substream *ss)
return bytes_to_frames(ss->runtime, ptr);
}
static struct snd_pcm_ops snd_ad1889_playback_ops = {
static const struct snd_pcm_ops snd_ad1889_playback_ops = {
.open = snd_ad1889_playback_open,
.close = snd_ad1889_playback_close,
.ioctl = snd_pcm_lib_ioctl,
@ -582,7 +582,7 @@ static struct snd_pcm_ops snd_ad1889_playback_ops = {
.pointer = snd_ad1889_playback_pointer,
};
static struct snd_pcm_ops snd_ad1889_capture_ops = {
static const struct snd_pcm_ops snd_ad1889_capture_ops = {
.open = snd_ad1889_capture_open,
.close = snd_ad1889_capture_close,
.ioctl = snd_pcm_lib_ioctl,