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
--- sound/usb/6fire/pcm.c | 2 +- sound/usb/caiaq/audio.c | 2 +- sound/usb/hiface/pcm.c | 2 +- sound/usb/misc/ua101.c | 4 ++-- sound/usb/usx2y/usx2yhwdeppcm.c | 2 +- 5 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/sound/usb/6fire/pcm.c b/sound/usb/6fire/pcm.c index 36f4115..224a6a5 100644 --- a/sound/usb/6fire/pcm.c +++ b/sound/usb/6fire/pcm.c @@ -555,7 +555,7 @@ static snd_pcm_uframes_t usb6fire_pcm_pointer( return ret; }
-static struct snd_pcm_ops pcm_ops = { +static const struct snd_pcm_ops pcm_ops = { .open = usb6fire_pcm_open, .close = usb6fire_pcm_close, .ioctl = snd_pcm_lib_ioctl, diff --git a/sound/usb/hiface/pcm.c b/sound/usb/hiface/pcm.c index 2c44139..23e66ed 100644 --- a/sound/usb/hiface/pcm.c +++ b/sound/usb/hiface/pcm.c @@ -511,7 +511,7 @@ static snd_pcm_uframes_t hiface_pcm_pointer(struct snd_pcm_substream *alsa_sub) return bytes_to_frames(alsa_sub->runtime, dma_offset); }
-static struct snd_pcm_ops pcm_ops = { +static const struct snd_pcm_ops pcm_ops = { .open = hiface_pcm_open, .close = hiface_pcm_close, .ioctl = snd_pcm_lib_ioctl, diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c index 90766a9..1f28cb2a 100644 --- a/sound/usb/usx2y/usx2yhwdeppcm.c +++ b/sound/usb/usx2y/usx2yhwdeppcm.c @@ -587,7 +587,7 @@ static int snd_usX2Y_usbpcm_close(struct snd_pcm_substream *substream) }
-static struct snd_pcm_ops snd_usX2Y_usbpcm_ops = +static const struct snd_pcm_ops snd_usX2Y_usbpcm_ops = { .open = snd_usX2Y_usbpcm_open, .close = snd_usX2Y_usbpcm_close, diff --git a/sound/usb/misc/ua101.c b/sound/usb/misc/ua101.c index c19a5dd..71a0e9e 100644 --- a/sound/usb/misc/ua101.c +++ b/sound/usb/misc/ua101.c @@ -890,7 +890,7 @@ static snd_pcm_uframes_t playback_pcm_pointer(struct snd_pcm_substream *subs) return ua101_pcm_pointer(ua, &ua->playback); }
-static struct snd_pcm_ops capture_pcm_ops = { +static const struct snd_pcm_ops capture_pcm_ops = { .open = capture_pcm_open, .close = capture_pcm_close, .ioctl = snd_pcm_lib_ioctl, @@ -903,7 +903,7 @@ static struct snd_pcm_ops capture_pcm_ops = { .mmap = snd_pcm_lib_mmap_vmalloc, };
-static struct snd_pcm_ops playback_pcm_ops = { +static const struct snd_pcm_ops playback_pcm_ops = { .open = playback_pcm_open, .close = playback_pcm_close, .ioctl = snd_pcm_lib_ioctl, diff --git a/sound/usb/caiaq/audio.c b/sound/usb/caiaq/audio.c index 8f66ba7..af5ad84 100644 --- a/sound/usb/caiaq/audio.c +++ b/sound/usb/caiaq/audio.c @@ -338,7 +338,7 @@ unlock: }
/* operators for both playback and capture */ -static struct snd_pcm_ops snd_usb_caiaq_ops = { +static const struct snd_pcm_ops snd_usb_caiaq_ops = { .open = snd_usb_caiaq_substream_open, .close = snd_usb_caiaq_substream_close, .ioctl = snd_pcm_lib_ioctl,