ALSA: 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 <[email protected]>
Signed-off-by: Takashi Iwai <[email protected]>

sound/pci/als300.c

@@ -563,7 +563,7 @@ static snd_pcm_uframes_t snd_als300_pointer(struct snd_pcm_substream *substream)
 	return bytes_to_frames(substream->runtime, current_ptr);
 }
 
-static struct snd_pcm_ops snd_als300_playback_ops = {
+static const struct snd_pcm_ops snd_als300_playback_ops = {
 	.open =		snd_als300_playback_open,
 	.close =	snd_als300_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -574,7 +574,7 @@ static struct snd_pcm_ops snd_als300_playback_ops = {
 	.pointer =	snd_als300_pointer,
 };
 
-static struct snd_pcm_ops snd_als300_capture_ops = {
+static const struct snd_pcm_ops snd_als300_capture_ops = {
 	.open =		snd_als300_capture_open,
 	.close =	snd_als300_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/als4000.c

@@ -672,7 +672,7 @@ static int snd_als4000_capture_close(struct snd_pcm_substream *substream)
 
 /******************************************************************/
 
-static struct snd_pcm_ops snd_als4000_playback_ops = {
+static const struct snd_pcm_ops snd_als4000_playback_ops = {
 	.open =		snd_als4000_playback_open,
 	.close =	snd_als4000_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -683,7 +683,7 @@ static struct snd_pcm_ops snd_als4000_playback_ops = {
 	.pointer =	snd_als4000_playback_pointer
 };
 
-static struct snd_pcm_ops snd_als4000_capture_ops = {
+static const struct snd_pcm_ops snd_als4000_capture_ops = {
 	.open =		snd_als4000_capture_open,
 	.close =	snd_als4000_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/asihpi/asihpi.c

@@ -1138,7 +1138,7 @@ static int snd_card_asihpi_playback_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops snd_card_asihpi_playback_mmap_ops = {
+static const struct snd_pcm_ops snd_card_asihpi_playback_mmap_ops = {
 	.open = snd_card_asihpi_playback_open,
 	.close = snd_card_asihpi_playback_close,
 	.ioctl = snd_card_asihpi_playback_ioctl,
@@ -1305,7 +1305,7 @@ static int snd_card_asihpi_capture_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
+static const struct snd_pcm_ops snd_card_asihpi_capture_mmap_ops = {
 	.open = snd_card_asihpi_capture_open,
 	.close = snd_card_asihpi_capture_close,
 	.ioctl = snd_card_asihpi_capture_ioctl,

sound/pci/atiixp.c

@@ -1148,7 +1148,7 @@ static int snd_atiixp_spdif_close(struct snd_pcm_substream *substream)
 }
 
 /* AC97 playback */
-static struct snd_pcm_ops snd_atiixp_playback_ops = {
+static const struct snd_pcm_ops snd_atiixp_playback_ops = {
 	.open =		snd_atiixp_playback_open,
 	.close =	snd_atiixp_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1160,7 +1160,7 @@ static struct snd_pcm_ops snd_atiixp_playback_ops = {
 };
 
 /* AC97 capture */
-static struct snd_pcm_ops snd_atiixp_capture_ops = {
+static const struct snd_pcm_ops snd_atiixp_capture_ops = {
 	.open =		snd_atiixp_capture_open,
 	.close =	snd_atiixp_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1172,7 +1172,7 @@ static struct snd_pcm_ops snd_atiixp_capture_ops = {
 };
 
 /* SPDIF playback */
-static struct snd_pcm_ops snd_atiixp_spdif_ops = {
+static const struct snd_pcm_ops snd_atiixp_spdif_ops = {
 	.open =		snd_atiixp_spdif_open,
 	.close =	snd_atiixp_spdif_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/atiixp_modem.c

@@ -947,7 +947,7 @@ static int snd_atiixp_capture_close(struct snd_pcm_substream *substream)
 
 
 /* AC97 playback */
-static struct snd_pcm_ops snd_atiixp_playback_ops = {
+static const struct snd_pcm_ops snd_atiixp_playback_ops = {
 	.open =		snd_atiixp_playback_open,
 	.close =	snd_atiixp_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -959,7 +959,7 @@ static struct snd_pcm_ops snd_atiixp_playback_ops = {
 };
 
 /* AC97 capture */
-static struct snd_pcm_ops snd_atiixp_capture_ops = {
+static const struct snd_pcm_ops snd_atiixp_capture_ops = {
 	.open =		snd_atiixp_capture_open,
 	.close =	snd_atiixp_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/aw2/aw2-alsa.c

@@ -179,7 +179,7 @@ static struct pci_driver aw2_driver = {
 module_pci_driver(aw2_driver);
 
 /* operators for playback PCM alsa interface */
-static struct snd_pcm_ops snd_aw2_playback_ops = {
+static const struct snd_pcm_ops snd_aw2_playback_ops = {
 	.open = snd_aw2_pcm_playback_open,
 	.close = snd_aw2_pcm_playback_close,
 	.ioctl = snd_pcm_lib_ioctl,
@@ -191,7 +191,7 @@ static struct snd_pcm_ops snd_aw2_playback_ops = {
 };
 
 /* operators for capture PCM alsa interface */
-static struct snd_pcm_ops snd_aw2_capture_ops = {
+static const struct snd_pcm_ops snd_aw2_capture_ops = {
 	.open = snd_aw2_pcm_capture_open,
 	.close = snd_aw2_pcm_capture_close,
 	.ioctl = snd_pcm_lib_ioctl,

sound/pci/azt3328.c

@@ -2090,7 +2090,7 @@ snd_azf3328_pcm_close(struct snd_pcm_substream *substream
 
 /******************************************************************/
 
-static struct snd_pcm_ops snd_azf3328_playback_ops = {
+static const struct snd_pcm_ops snd_azf3328_playback_ops = {
 	.open =		snd_azf3328_pcm_playback_open,
 	.close =	snd_azf3328_pcm_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -2101,7 +2101,7 @@ static struct snd_pcm_ops snd_azf3328_playback_ops = {
 	.pointer =	snd_azf3328_pcm_pointer
 };
 
-static struct snd_pcm_ops snd_azf3328_capture_ops = {
+static const struct snd_pcm_ops snd_azf3328_capture_ops = {
 	.open =		snd_azf3328_pcm_capture_open,
 	.close =	snd_azf3328_pcm_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -2112,7 +2112,7 @@ static struct snd_pcm_ops snd_azf3328_capture_ops = {
 	.pointer =	snd_azf3328_pcm_pointer
 };
 
-static struct snd_pcm_ops snd_azf3328_i2s_out_ops = {
+static const struct snd_pcm_ops snd_azf3328_i2s_out_ops = {
 	.open =		snd_azf3328_pcm_i2s_out_open,
 	.close =	snd_azf3328_pcm_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/ca0106/ca0106_main.c

@@ -1109,7 +1109,7 @@ snd_ca0106_pcm_pointer_capture(struct snd_pcm_substream *substream)
 }
 
 /* operators */
-static struct snd_pcm_ops snd_ca0106_playback_front_ops = {
+static const struct snd_pcm_ops snd_ca0106_playback_front_ops = {
 	.open =        snd_ca0106_pcm_open_playback_front,
 	.close =       snd_ca0106_pcm_close_playback,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -1120,7 +1120,7 @@ static struct snd_pcm_ops snd_ca0106_playback_front_ops = {
 	.pointer =     snd_ca0106_pcm_pointer_playback,
 };
 
-static struct snd_pcm_ops snd_ca0106_capture_0_ops = {
+static const struct snd_pcm_ops snd_ca0106_capture_0_ops = {
 	.open =        snd_ca0106_pcm_open_0_capture,
 	.close =       snd_ca0106_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -1131,7 +1131,7 @@ static struct snd_pcm_ops snd_ca0106_capture_0_ops = {
 	.pointer =     snd_ca0106_pcm_pointer_capture,
 };
 
-static struct snd_pcm_ops snd_ca0106_capture_1_ops = {
+static const struct snd_pcm_ops snd_ca0106_capture_1_ops = {
 	.open =        snd_ca0106_pcm_open_1_capture,
 	.close =       snd_ca0106_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -1142,7 +1142,7 @@ static struct snd_pcm_ops snd_ca0106_capture_1_ops = {
 	.pointer =     snd_ca0106_pcm_pointer_capture,
 };
 
-static struct snd_pcm_ops snd_ca0106_capture_2_ops = {
+static const struct snd_pcm_ops snd_ca0106_capture_2_ops = {
 	.open =        snd_ca0106_pcm_open_2_capture,
 	.close =       snd_ca0106_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -1153,7 +1153,7 @@ static struct snd_pcm_ops snd_ca0106_capture_2_ops = {
 	.pointer =     snd_ca0106_pcm_pointer_capture,
 };
 
-static struct snd_pcm_ops snd_ca0106_capture_3_ops = {
+static const struct snd_pcm_ops snd_ca0106_capture_3_ops = {
 	.open =        snd_ca0106_pcm_open_3_capture,
 	.close =       snd_ca0106_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -1164,7 +1164,7 @@ static struct snd_pcm_ops snd_ca0106_capture_3_ops = {
 	.pointer =     snd_ca0106_pcm_pointer_capture,
 };
 
-static struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
+static const struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
         .open =         snd_ca0106_pcm_open_playback_center_lfe,
         .close =        snd_ca0106_pcm_close_playback,
         .ioctl =        snd_pcm_lib_ioctl,
@@ -1175,7 +1175,7 @@ static struct snd_pcm_ops snd_ca0106_playback_center_lfe_ops = {
         .pointer =      snd_ca0106_pcm_pointer_playback, 
 };
 
-static struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
+static const struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
         .open =         snd_ca0106_pcm_open_playback_unknown,
         .close =        snd_ca0106_pcm_close_playback,
         .ioctl =        snd_pcm_lib_ioctl,
@@ -1186,7 +1186,7 @@ static struct snd_pcm_ops snd_ca0106_playback_unknown_ops = {
         .pointer =      snd_ca0106_pcm_pointer_playback, 
 };
 
-static struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
+static const struct snd_pcm_ops snd_ca0106_playback_rear_ops = {
         .open =         snd_ca0106_pcm_open_playback_rear,
         .close =        snd_ca0106_pcm_close_playback,
         .ioctl =        snd_pcm_lib_ioctl,

sound/pci/cmipci.c

@@ -1838,7 +1838,7 @@ static int snd_cmipci_capture_spdif_close(struct snd_pcm_substream *substream)
 /*
  */
 
-static struct snd_pcm_ops snd_cmipci_playback_ops = {
+static const struct snd_pcm_ops snd_cmipci_playback_ops = {
 	.open =		snd_cmipci_playback_open,
 	.close =	snd_cmipci_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1849,7 +1849,7 @@ static struct snd_pcm_ops snd_cmipci_playback_ops = {
 	.pointer =	snd_cmipci_playback_pointer,
 };
 
-static struct snd_pcm_ops snd_cmipci_capture_ops = {
+static const struct snd_pcm_ops snd_cmipci_capture_ops = {
 	.open =		snd_cmipci_capture_open,
 	.close =	snd_cmipci_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1860,7 +1860,7 @@ static struct snd_pcm_ops snd_cmipci_capture_ops = {
 	.pointer =	snd_cmipci_capture_pointer,
 };
 
-static struct snd_pcm_ops snd_cmipci_playback2_ops = {
+static const struct snd_pcm_ops snd_cmipci_playback2_ops = {
 	.open =		snd_cmipci_playback2_open,
 	.close =	snd_cmipci_playback2_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1871,7 +1871,7 @@ static struct snd_pcm_ops snd_cmipci_playback2_ops = {
 	.pointer =	snd_cmipci_capture_pointer,	/* channel B */
 };
 
-static struct snd_pcm_ops snd_cmipci_playback_spdif_ops = {
+static const struct snd_pcm_ops snd_cmipci_playback_spdif_ops = {
 	.open =		snd_cmipci_playback_spdif_open,
 	.close =	snd_cmipci_playback_spdif_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -1882,7 +1882,7 @@ static struct snd_pcm_ops snd_cmipci_playback_spdif_ops = {
 	.pointer =	snd_cmipci_playback_pointer,
 };
 
-static struct snd_pcm_ops snd_cmipci_capture_spdif_ops = {
+static const struct snd_pcm_ops snd_cmipci_capture_spdif_ops = {
 	.open =		snd_cmipci_capture_spdif_open,
 	.close =	snd_cmipci_capture_spdif_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/cs4281.c

@@ -951,7 +951,7 @@ static int snd_cs4281_capture_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops snd_cs4281_playback_ops = {
+static const struct snd_pcm_ops snd_cs4281_playback_ops = {
 	.open =		snd_cs4281_playback_open,
 	.close =	snd_cs4281_playback_close,
 	.ioctl =	snd_pcm_lib_ioctl,
@@ -962,7 +962,7 @@ static struct snd_pcm_ops snd_cs4281_playback_ops = {
 	.pointer =	snd_cs4281_pointer,
 };
 
-static struct snd_pcm_ops snd_cs4281_capture_ops = {
+static const struct snd_pcm_ops snd_cs4281_capture_ops = {
 	.open =		snd_cs4281_capture_open,
 	.close =	snd_cs4281_capture_close,
 	.ioctl =	snd_pcm_lib_ioctl,

sound/pci/ctxfi/ctpcm.c

@@ -372,7 +372,7 @@ ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
 }
 
 /* PCM operators for playback */
-static struct snd_pcm_ops ct_pcm_playback_ops = {
+static const struct snd_pcm_ops ct_pcm_playback_ops = {
 	.open	 	= ct_pcm_playback_open,
 	.close		= ct_pcm_playback_close,
 	.ioctl		= snd_pcm_lib_ioctl,
@@ -385,7 +385,7 @@ static struct snd_pcm_ops ct_pcm_playback_ops = {
 };
 
 /* PCM operators for capture */
-static struct snd_pcm_ops ct_pcm_capture_ops = {
+static const struct snd_pcm_ops ct_pcm_capture_ops = {
 	.open	 	= ct_pcm_capture_open,
 	.close		= ct_pcm_capture_close,
 	.ioctl		= snd_pcm_lib_ioctl,

sound/pci/emu10k1/emu10k1x.c

@@ -548,7 +548,7 @@ snd_emu10k1x_pcm_pointer(struct snd_pcm_substream *substream)
 }
 
 /* operators */
-static struct snd_pcm_ops snd_emu10k1x_playback_ops = {
+static const struct snd_pcm_ops snd_emu10k1x_playback_ops = {
 	.open =        snd_emu10k1x_playback_open,
 	.close =       snd_emu10k1x_playback_close,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -694,7 +694,7 @@ snd_emu10k1x_pcm_pointer_capture(struct snd_pcm_substream *substream)
 	return ptr;
 }
 
-static struct snd_pcm_ops snd_emu10k1x_capture_ops = {
+static const struct snd_pcm_ops snd_emu10k1x_capture_ops = {
 	.open =        snd_emu10k1x_pcm_open_capture,
 	.close =       snd_emu10k1x_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,

sound/pci/emu10k1/emupcm.c

@@ -1364,7 +1364,7 @@ static int snd_emu10k1_capture_efx_close(struct snd_pcm_substream *substream)
 	return 0;
 }
 
-static struct snd_pcm_ops snd_emu10k1_playback_ops = {
+static const struct snd_pcm_ops snd_emu10k1_playback_ops = {
 	.open =			snd_emu10k1_playback_open,
 	.close =		snd_emu10k1_playback_close,
 	.ioctl =		snd_pcm_lib_ioctl,
@@ -1376,7 +1376,7 @@ static struct snd_pcm_ops snd_emu10k1_playback_ops = {
 	.page =			snd_pcm_sgbuf_ops_page,
 };
 
-static struct snd_pcm_ops snd_emu10k1_capture_ops = {
+static const struct snd_pcm_ops snd_emu10k1_capture_ops = {
 	.open =			snd_emu10k1_capture_open,
 	.close =		snd_emu10k1_capture_close,
 	.ioctl =		snd_pcm_lib_ioctl,
@@ -1388,7 +1388,7 @@ static struct snd_pcm_ops snd_emu10k1_capture_ops = {
 };
 
 /* EFX playback */
-static struct snd_pcm_ops snd_emu10k1_efx_playback_ops = {
+static const struct snd_pcm_ops snd_emu10k1_efx_playback_ops = {
 	.open =			snd_emu10k1_efx_playback_open,
 	.close =		snd_emu10k1_efx_playback_close,
 	.ioctl =		snd_pcm_lib_ioctl,
@@ -1455,7 +1455,7 @@ int snd_emu10k1_pcm_multi(struct snd_emu10k1 *emu, int device)
 }
 
 
-static struct snd_pcm_ops snd_emu10k1_capture_mic_ops = {
+static const struct snd_pcm_ops snd_emu10k1_capture_mic_ops = {
 	.open =			snd_emu10k1_capture_mic_open,
 	.close =		snd_emu10k1_capture_mic_close,
 	.ioctl =		snd_pcm_lib_ioctl,
@@ -1550,7 +1550,7 @@ static struct snd_kcontrol_new snd_emu10k1_pcm_efx_voices_mask = {
 	.put = snd_emu10k1_pcm_efx_voices_mask_put
 };
 
-static struct snd_pcm_ops snd_emu10k1_capture_efx_ops = {
+static const struct snd_pcm_ops snd_emu10k1_capture_efx_ops = {
 	.open =			snd_emu10k1_capture_efx_open,
 	.close =		snd_emu10k1_capture_efx_close,
 	.ioctl =		snd_pcm_lib_ioctl,
@@ -1791,7 +1791,7 @@ static int snd_emu10k1_fx8010_playback_close(struct snd_pcm_substream *substream
 	return 0;
 }
 
-static struct snd_pcm_ops snd_emu10k1_fx8010_playback_ops = {
+static const struct snd_pcm_ops snd_emu10k1_fx8010_playback_ops = {
 	.open =			snd_emu10k1_fx8010_playback_open,
 	.close =		snd_emu10k1_fx8010_playback_close,
 	.ioctl =		snd_pcm_lib_ioctl,

sound/pci/emu10k1/p16v.c

@@ -601,7 +601,7 @@ snd_p16v_pcm_pointer_capture(struct snd_pcm_substream *substream)
 }
 
 /* operators */
-static struct snd_pcm_ops snd_p16v_playback_front_ops = {
+static const struct snd_pcm_ops snd_p16v_playback_front_ops = {
 	.open =        snd_p16v_pcm_open_playback_front,
 	.close =       snd_p16v_pcm_close_playback,
 	.ioctl =       snd_pcm_lib_ioctl,
@@ -612,7 +612,7 @@ static struct snd_pcm_ops snd_p16v_playback_front_ops = {
 	.pointer =     snd_p16v_pcm_pointer_playback,
 };
 
-static struct snd_pcm_ops snd_p16v_capture_ops = {
+static const struct snd_pcm_ops snd_p16v_capture_ops = {
 	.open =        snd_p16v_pcm_open_capture,
 	.close =       snd_p16v_pcm_close_capture,
 	.ioctl =       snd_pcm_lib_ioctl,