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/pci/oxygen/oxygen_pcm.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c index aa2ebd1..042a243 100644 --- a/sound/pci/oxygen/oxygen_pcm.c +++ b/sound/pci/oxygen/oxygen_pcm.c @@ -631,7 +631,7 @@ static snd_pcm_uframes_t oxygen_pointer(struct snd_pcm_substream *substream) return bytes_to_frames(runtime, curr_addr - (u32)runtime->dma_addr); }
-static struct snd_pcm_ops oxygen_rec_a_ops = { +static const struct snd_pcm_ops oxygen_rec_a_ops = { .open = oxygen_rec_a_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl, @@ -642,7 +642,7 @@ static struct snd_pcm_ops oxygen_rec_a_ops = { .pointer = oxygen_pointer, };
-static struct snd_pcm_ops oxygen_rec_b_ops = { +static const struct snd_pcm_ops oxygen_rec_b_ops = { .open = oxygen_rec_b_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl, @@ -653,7 +653,7 @@ static struct snd_pcm_ops oxygen_rec_b_ops = { .pointer = oxygen_pointer, };
-static struct snd_pcm_ops oxygen_rec_c_ops = { +static const struct snd_pcm_ops oxygen_rec_c_ops = { .open = oxygen_rec_c_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl, @@ -664,7 +664,7 @@ static struct snd_pcm_ops oxygen_rec_c_ops = { .pointer = oxygen_pointer, };
-static struct snd_pcm_ops oxygen_spdif_ops = { +static const struct snd_pcm_ops oxygen_spdif_ops = { .open = oxygen_spdif_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl, @@ -675,7 +675,7 @@ static struct snd_pcm_ops oxygen_spdif_ops = { .pointer = oxygen_pointer, };
-static struct snd_pcm_ops oxygen_multich_ops = { +static const struct snd_pcm_ops oxygen_multich_ops = { .open = oxygen_multich_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl, @@ -686,7 +686,7 @@ static struct snd_pcm_ops oxygen_multich_ops = { .pointer = oxygen_pointer, };
-static struct snd_pcm_ops oxygen_ac97_ops = { +static const struct snd_pcm_ops oxygen_ac97_ops = { .open = oxygen_ac97_open, .close = oxygen_close, .ioctl = snd_pcm_lib_ioctl,