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[media] usb: 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: 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 21:59:06 -03:00 committed by Mauro Carvalho Chehab
parent 5c8d8c0192
commit 22511cfa7d
5 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/usb/cx231xx/cx231xx-audio.c
View File

@ -635,7 +635,7 @@ static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
return vmalloc_to_page(pageptr);
}
static struct snd_pcm_ops snd_cx231xx_pcm_capture = {
static const struct snd_pcm_ops snd_cx231xx_pcm_capture = {
.open = snd_cx231xx_capture_open,
.close = snd_cx231xx_pcm_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/usb/em28xx/em28xx-audio.c
View File

@ -695,7 +695,7 @@ static int em28xx_cvol_new(struct snd_card *card, struct em28xx *dev,
/*
* register/unregister code and data
*/
static struct snd_pcm_ops snd_em28xx_pcm_capture = {
static const struct snd_pcm_ops snd_em28xx_pcm_capture = {
.open = snd_em28xx_capture_open,
.close = snd_em28xx_pcm_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/usb/go7007/snd-go7007.c
View File

@ -198,7 +198,7 @@ static struct page *go7007_snd_pcm_page(struct snd_pcm_substream *substream,
return vmalloc_to_page(substream->runtime->dma_area + offset);
}
static struct snd_pcm_ops go7007_snd_capture_ops = {
static const struct snd_pcm_ops go7007_snd_capture_ops = {
.open = go7007_snd_capture_open,
.close = go7007_snd_capture_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/usb/tm6000/tm6000-alsa.c
View File

@ -388,7 +388,7 @@ static struct page *snd_pcm_get_vmalloc_page(struct snd_pcm_substream *subs,
/*
* operators
*/
static struct snd_pcm_ops snd_tm6000_pcm_ops = {
static const struct snd_pcm_ops snd_tm6000_pcm_ops = {
.open = snd_tm6000_pcm_open,
.close = snd_tm6000_close,
.ioctl = snd_pcm_lib_ioctl,

2
drivers/media/usb/usbtv/usbtv-audio.c
View File

@ -332,7 +332,7 @@ static snd_pcm_uframes_t snd_usbtv_pointer(struct snd_pcm_substream *substream)
return chip->snd_buffer_pos;
}
static struct snd_pcm_ops snd_usbtv_pcm_ops = {
static const struct snd_pcm_ops snd_usbtv_pcm_ops = {
.open = snd_usbtv_pcm_open,
.close = snd_usbtv_pcm_close,
.ioctl = snd_pcm_lib_ioctl,