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[media] pci: constify snd_pcm_ops structures 

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>
Acked-by: Andrey Utkin <andrey.utkin@corp.bluecherry.net>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Julia Lawall 2016-09-07 21:44:39 -03:00 committed by Mauro Carvalho Chehab
parent b61873922d
commit 5c8d8c0192
9 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/media/pci/cobalt/cobalt-alsa-pcm.c
View File

@ -510,7 +510,7 @@ static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
return vmalloc_to_page(pageptr);
}
static struct snd_pcm_ops snd_cobalt_pcm_capture_ops = {
static const struct snd_pcm_ops snd_cobalt_pcm_capture_ops = {
.open = snd_cobalt_pcm_capture_open,
.close = snd_cobalt_pcm_capture_close,
.ioctl = snd_cobalt_pcm_ioctl,
@ -522,7 +522,7 @@ static struct snd_pcm_ops snd_cobalt_pcm_capture_ops = {
.page = snd_pcm_get_vmalloc_page,
};
static struct snd_pcm_ops snd_cobalt_pcm_playback_ops = {
static const struct snd_pcm_ops snd_cobalt_pcm_playback_ops = {
.open = snd_cobalt_pcm_playback_open,
.close = snd_cobalt_pcm_playback_close,
.ioctl = snd_cobalt_pcm_ioctl,

2
drivers/media/pci/cx18/cx18-alsa-pcm.c
View File

@ -311,7 +311,7 @@ static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
return vmalloc_to_page(pageptr);
}
static struct snd_pcm_ops snd_cx18_pcm_capture_ops = {
static const struct snd_pcm_ops snd_cx18_pcm_capture_ops = {
.open = snd_cx18_pcm_capture_open,
.close = snd_cx18_pcm_capture_close,
.ioctl = snd_cx18_pcm_ioctl,

2
drivers/media/pci/cx23885/cx23885-alsa.c
View File

@ -506,7 +506,7 @@ static struct page *snd_cx23885_page(struct snd_pcm_substream *substream,
/*
* operators
*/
static struct snd_pcm_ops snd_cx23885_pcm_ops = {
static const struct snd_pcm_ops snd_cx23885_pcm_ops = {
.open = snd_cx23885_pcm_open,
.close = snd_cx23885_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/pci/cx25821/cx25821-alsa.c
View File

@ -649,7 +649,7 @@ static struct page *snd_cx25821_page(struct snd_pcm_substream *substream,
/*
* operators
*/
static struct snd_pcm_ops snd_cx25821_pcm_ops = {
static const struct snd_pcm_ops snd_cx25821_pcm_ops = {
.open = snd_cx25821_pcm_open,
.close = snd_cx25821_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/pci/cx88/cx88-alsa.c
View File

@ -599,7 +599,7 @@ static struct page *snd_cx88_page(struct snd_pcm_substream *substream,
/*
* operators
*/
static struct snd_pcm_ops snd_cx88_pcm_ops = {
static const struct snd_pcm_ops snd_cx88_pcm_ops = {
.open = snd_cx88_pcm_open,
.close = snd_cx88_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/pci/ivtv/ivtv-alsa-pcm.c
View File

@ -318,7 +318,7 @@ static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
return vmalloc_to_page(pageptr);
}
static struct snd_pcm_ops snd_ivtv_pcm_capture_ops = {
static const struct snd_pcm_ops snd_ivtv_pcm_capture_ops = {
.open = snd_ivtv_pcm_capture_open,
.close = snd_ivtv_pcm_capture_close,
.ioctl = snd_ivtv_pcm_ioctl,

2
drivers/media/pci/saa7134/saa7134-alsa.c
View File

@ -877,7 +877,7 @@ static struct page *snd_card_saa7134_page(struct snd_pcm_substream *substream,
* ALSA capture callbacks definition
*/
static struct snd_pcm_ops snd_card_saa7134_capture_ops = {
static const struct snd_pcm_ops snd_card_saa7134_capture_ops = {
.open = snd_card_saa7134_capture_open,
.close = snd_card_saa7134_capture_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/pci/solo6x10/solo6x10-g723.c
View File

@ -252,7 +252,7 @@ static int snd_solo_pcm_copy(struct snd_pcm_substream *ss, int channel,
return 0;
}
static struct snd_pcm_ops snd_solo_pcm_ops = {
static const struct snd_pcm_ops snd_solo_pcm_ops = {
.open = snd_solo_pcm_open,
.close = snd_solo_pcm_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/pci/tw686x/tw686x-audio.c
View File

@ -269,7 +269,7 @@ static snd_pcm_uframes_t tw686x_pcm_pointer(struct snd_pcm_substream *ss)
return bytes_to_frames(ss->runtime, ac->ptr);
}
static struct snd_pcm_ops tw686x_pcm_ops = {
static const struct snd_pcm_ops tw686x_pcm_ops = {
.open = tw686x_pcm_open,
.close = tw686x_pcm_close,
.ioctl = snd_pcm_lib_ioctl,