ALSA: pci: constify local structures

For structure types defined in the same file or local header files, find
top-level static structure declarations that have the following
properties:
1. Never reassigned.
2. Address never taken
3. Not passed to a top-level macro call
4. No pointer or array-typed field passed to a function or stored in a
variable.
Declare structures having all of these properties as const.

Done using Coccinelle.
Based on a suggestion by Joe Perches <joe@perches.com>.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/ctxfi/ctatc.c

@@ -1623,7 +1623,7 @@ static int atc_resume(struct ct_atc *atc)
 }
 #endif
 
-static struct ct_atc atc_preset = {
+static const struct ct_atc atc_preset = {
 	.map_audio_buffer = ct_map_audio_buffer,
 	.unmap_audio_buffer = ct_unmap_audio_buffer,
 	.pcm_playback_prepare = atc_pcm_playback_prepare,

sound/pci/hda/patch_ca0132.c

@@ -4018,7 +4018,7 @@ static int ca0132_build_controls(struct hda_codec *codec)
 /*
  * PCM
  */
-static struct hda_pcm_stream ca0132_pcm_analog_playback = {
+static const struct hda_pcm_stream ca0132_pcm_analog_playback = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 6,
@@ -4029,7 +4029,7 @@ static struct hda_pcm_stream ca0132_pcm_analog_playback = {
 	},
 };
 
-static struct hda_pcm_stream ca0132_pcm_analog_capture = {
+static const struct hda_pcm_stream ca0132_pcm_analog_capture = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
@@ -4040,7 +4040,7 @@ static struct hda_pcm_stream ca0132_pcm_analog_capture = {
 	},
 };
 
-static struct hda_pcm_stream ca0132_pcm_digital_playback = {
+static const struct hda_pcm_stream ca0132_pcm_digital_playback = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
@@ -4052,7 +4052,7 @@ static struct hda_pcm_stream ca0132_pcm_digital_playback = {
 	},
 };
 
-static struct hda_pcm_stream ca0132_pcm_digital_capture = {
+static const struct hda_pcm_stream ca0132_pcm_digital_capture = {
 	.substreams = 1,
 	.channels_min = 2,
 	.channels_max = 2,
@@ -4614,7 +4614,7 @@ static void ca0132_free(struct hda_codec *codec)
 	kfree(codec->spec);
 }
 
-static struct hda_codec_ops ca0132_patch_ops = {
+static const struct hda_codec_ops ca0132_patch_ops = {
 	.build_controls = ca0132_build_controls,
 	.build_pcms = ca0132_build_pcms,
 	.init = ca0132_init,

sound/pci/riptide/riptide.c

@@ -644,7 +644,7 @@ static struct lbuspath lbus_play_paths[] = {
 	 .mono = lbus_play_mono3,
 	 },
 };
-static struct lbuspath lbus_rec_path = {
+static const struct lbuspath lbus_rec_path = {
 	.noconv = lbus_rec_noconv1,
 	.stereo = lbus_rec_stereo1,
 	.mono = lbus_rec_mono1,