From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Thu, 1 Sep 2016 22:13:13 +0000 (+0200)
Subject: ALSA: oxygen: constify snd_pcm_ops structures
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bc9a910b15d0cc6f2f540fc0446381d47f215fc7;p=linux-beck.git

ALSA: oxygen: 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: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/oxygen/oxygen_pcm.c b/sound/pci/oxygen/oxygen_pcm.c
index aa2ebd1d6d12..042a2439fea5 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,