1 files changed, 254 insertions, 200 deletions

diff --git a/sound/core/pcm.c b/sound/core/pcm.c
index 184e74b..28ca61e 100644
--- a/sound/core/pcm.c
+++ b/sound/core/pcm.c
@@ -33,23 +33,33 @@ MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>, Abramo Bagnara <abramo@alsa-proj
 MODULE_DESCRIPTION("Midlevel PCM code for ALSA.");
 MODULE_LICENSE("GPL");
 
-snd_pcm_t *snd_pcm_devices[SNDRV_CARDS * SNDRV_PCM_DEVICES];
+static LIST_HEAD(snd_pcm_devices);
 static LIST_HEAD(snd_pcm_notify_list);
 static DECLARE_MUTEX(register_mutex);
 
-static int snd_pcm_free(snd_pcm_t *pcm);
-static int snd_pcm_dev_free(snd_device_t *device);
-static int snd_pcm_dev_register(snd_device_t *device);
-static int snd_pcm_dev_disconnect(snd_device_t *device);
-static int snd_pcm_dev_unregister(snd_device_t *device);
+static int snd_pcm_free(struct snd_pcm *pcm);
+static int snd_pcm_dev_free(struct snd_device *device);
+static int snd_pcm_dev_register(struct snd_device *device);
+static int snd_pcm_dev_disconnect(struct snd_device *device);
+static int snd_pcm_dev_unregister(struct snd_device *device);
 
-static int snd_pcm_control_ioctl(snd_card_t * card,
-				 snd_ctl_file_t * control,
-				 unsigned int cmd, unsigned long arg)
+static struct snd_pcm *snd_pcm_search(struct snd_card *card, int device)
 {
-	unsigned int tmp;
+	struct list_head *p;
+	struct snd_pcm *pcm;
+
+	list_for_each(p, &snd_pcm_devices) {
+		pcm = list_entry(p, struct snd_pcm, list);
+		if (pcm->card == card && pcm->device == device)
+			return pcm;
+	}
+	return NULL;
+}
 
-	tmp = card->number * SNDRV_PCM_DEVICES;
+static int snd_pcm_control_ioctl(struct snd_card *card,
+				 struct snd_ctl_file *control,
+				 unsigned int cmd, unsigned long arg)
+{
 	switch (cmd) {
 	case SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE:
 		{
@@ -57,51 +67,66 @@ static int snd_pcm_control_ioctl(snd_card_t * card,
 
 			if (get_user(device, (int __user *)arg))
 				return -EFAULT;
+			down(&register_mutex);
 			device = device < 0 ? 0 : device + 1;
 			while (device < SNDRV_PCM_DEVICES) {
-				if (snd_pcm_devices[tmp + device])
+				if (snd_pcm_search(card, device))
 					break;
 				device++;
 			}
 			if (device == SNDRV_PCM_DEVICES)
 				device = -1;
+			up(&register_mutex);
 			if (put_user(device, (int __user *)arg))
 				return -EFAULT;
 			return 0;
 		}
 	case SNDRV_CTL_IOCTL_PCM_INFO:
 		{
-			snd_pcm_info_t __user *info;
+			struct snd_pcm_info __user *info;
 			unsigned int device, subdevice;
-			snd_pcm_stream_t stream;
-			snd_pcm_t *pcm;
-			snd_pcm_str_t *pstr;
-			snd_pcm_substream_t *substream;
-			info = (snd_pcm_info_t __user *)arg;
+			int stream;
+			struct snd_pcm *pcm;
+			struct snd_pcm_str *pstr;
+			struct snd_pcm_substream *substream;
+			int err;
+
+			info = (struct snd_pcm_info __user *)arg;
 			if (get_user(device, &info->device))
 				return -EFAULT;
-			if (device >= SNDRV_PCM_DEVICES)
-				return -ENXIO;
-			pcm = snd_pcm_devices[tmp + device];
-			if (pcm == NULL)
-				return -ENXIO;
 			if (get_user(stream, &info->stream))
 				return -EFAULT;
 			if (stream < 0 || stream > 1)
 				return -EINVAL;
-			pstr = &pcm->streams[stream];
-			if (pstr->substream_count == 0)
-				return -ENOENT;
 			if (get_user(subdevice, &info->subdevice))
 				return -EFAULT;
-			if (subdevice >= pstr->substream_count)
-				return -ENXIO;
-			for (substream = pstr->substream; substream; substream = substream->next)
+			down(&register_mutex);
+			pcm = snd_pcm_search(card, device);
+			if (pcm == NULL) {
+				err = -ENXIO;
+				goto _error;
+			}
+			pstr = &pcm->streams[stream];
+			if (pstr->substream_count == 0) {
+				err = -ENOENT;
+				goto _error;
+			}
+			if (subdevice >= pstr->substream_count) {
+				err = -ENXIO;
+				goto _error;
+			}
+			for (substream = pstr->substream; substream;
+			     substream = substream->next)
 				if (substream->number == (int)subdevice)
 					break;
-			if (substream == NULL)
-				return -ENXIO;
-			return snd_pcm_info_user(substream, info);
+			if (substream == NULL) {
+				err = -ENXIO;
+				goto _error;
+			}
+			err = snd_pcm_info_user(substream, info);
+		_error:
+			up(&register_mutex);
+			return err;
 		}
 	case SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE:
 		{
@@ -126,30 +151,6 @@ static int snd_pcm_control_ioctl(snd_card_t * card,
 #define FORMAT(v) [SNDRV_PCM_FORMAT_##v] = #v
 #define SUBFORMAT(v) [SNDRV_PCM_SUBFORMAT_##v] = #v 
 
-static char *snd_pcm_stream_names[] = {
-	STREAM(PLAYBACK),
-	STREAM(CAPTURE),
-};
-
-static char *snd_pcm_state_names[] = {
-	STATE(OPEN),
-	STATE(SETUP),
-	STATE(PREPARED),
-	STATE(RUNNING),
-	STATE(XRUN),
-	STATE(DRAINING),
-	STATE(PAUSED),
-	STATE(SUSPENDED),
-};
-
-static char *snd_pcm_access_names[] = {
-	ACCESS(MMAP_INTERLEAVED), 
-	ACCESS(MMAP_NONINTERLEAVED),
-	ACCESS(MMAP_COMPLEX),
-	ACCESS(RW_INTERLEAVED),
-	ACCESS(RW_NONINTERLEAVED),
-};
-
 static char *snd_pcm_format_names[] = {
 	FORMAT(S8),
 	FORMAT(U8),
@@ -191,6 +192,36 @@ static char *snd_pcm_format_names[] = {
 	FORMAT(U18_3BE),
 };
 
+const char *snd_pcm_format_name(snd_pcm_format_t format)
+{
+	return snd_pcm_format_names[format];
+}
+
+#ifdef CONFIG_PROC_FS
+static char *snd_pcm_stream_names[] = {
+	STREAM(PLAYBACK),
+	STREAM(CAPTURE),
+};
+
+static char *snd_pcm_state_names[] = {
+	STATE(OPEN),
+	STATE(SETUP),
+	STATE(PREPARED),
+	STATE(RUNNING),
+	STATE(XRUN),
+	STATE(DRAINING),
+	STATE(PAUSED),
+	STATE(SUSPENDED),
+};
+
+static char *snd_pcm_access_names[] = {
+	ACCESS(MMAP_INTERLEAVED), 
+	ACCESS(MMAP_NONINTERLEAVED),
+	ACCESS(MMAP_COMPLEX),
+	ACCESS(RW_INTERLEAVED),
+	ACCESS(RW_NONINTERLEAVED),
+};
+
 static char *snd_pcm_subformat_names[] = {
 	SUBFORMAT(STD), 
 };
@@ -200,7 +231,7 @@ static char *snd_pcm_tstamp_mode_names[] = {
 	TSTAMP(MMAP),
 };
 
-static const char *snd_pcm_stream_name(snd_pcm_stream_t stream)
+static const char *snd_pcm_stream_name(int stream)
 {
 	snd_assert(stream <= SNDRV_PCM_STREAM_LAST, return NULL);
 	return snd_pcm_stream_names[stream];
@@ -208,23 +239,15 @@ static const char *snd_pcm_stream_name(snd_pcm_stream_t stream)
 
 static const char *snd_pcm_access_name(snd_pcm_access_t access)
 {
-	snd_assert(access <= SNDRV_PCM_ACCESS_LAST, return NULL);
 	return snd_pcm_access_names[access];
 }
 
-const char *snd_pcm_format_name(snd_pcm_format_t format)
-{
-	snd_assert(format <= SNDRV_PCM_FORMAT_LAST, return NULL);
-	return snd_pcm_format_names[format];
-}
-
 static const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat)
 {
-	snd_assert(subformat <= SNDRV_PCM_SUBFORMAT_LAST, return NULL);
 	return snd_pcm_subformat_names[subformat];
 }
 
-static const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode)
+static const char *snd_pcm_tstamp_mode_name(int mode)
 {
 	snd_assert(mode <= SNDRV_PCM_TSTAMP_LAST, return NULL);
 	return snd_pcm_tstamp_mode_names[mode];
@@ -232,7 +255,6 @@ static const char *snd_pcm_tstamp_mode_name(snd_pcm_tstamp_t mode)
 
 static const char *snd_pcm_state_name(snd_pcm_state_t state)
 {
-	snd_assert(state <= SNDRV_PCM_STATE_LAST, return NULL);
 	return snd_pcm_state_names[state];
 }
 
@@ -267,10 +289,10 @@ static const char *snd_pcm_oss_format_name(int format)
 }
 #endif
 
-#ifdef CONFIG_PROC_FS
-static void snd_pcm_proc_info_read(snd_pcm_substream_t *substream, snd_info_buffer_t *buffer)
+static void snd_pcm_proc_info_read(struct snd_pcm_substream *substream,
+				   struct snd_info_buffer *buffer)
 {
-	snd_pcm_info_t *info;
+	struct snd_pcm_info *info;
 	int err;
 
 	if (! substream)
@@ -302,20 +324,25 @@ static void snd_pcm_proc_info_read(snd_pcm_substream_t *substream, snd_info_buff
 	kfree(info);
 }
 
-static void snd_pcm_stream_proc_info_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_stream_proc_info_read(struct snd_info_entry *entry,
+					  struct snd_info_buffer *buffer)
 {
-	snd_pcm_proc_info_read(((snd_pcm_str_t *)entry->private_data)->substream, buffer);
+	snd_pcm_proc_info_read(((struct snd_pcm_str *)entry->private_data)->substream,
+			       buffer);
 }
 
-static void snd_pcm_substream_proc_info_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_substream_proc_info_read(struct snd_info_entry *entry,
+					     struct snd_info_buffer *buffer)
 {
-	snd_pcm_proc_info_read((snd_pcm_substream_t *)entry->private_data, buffer);
+	snd_pcm_proc_info_read((struct snd_pcm_substream *)entry->private_data,
+			       buffer);
 }
 
-static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_substream_proc_hw_params_read(struct snd_info_entry *entry,
+						  struct snd_info_buffer *buffer)
 {
-	snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data;
-	snd_pcm_runtime_t *runtime = substream->runtime;
+	struct snd_pcm_substream *substream = entry->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	if (!runtime) {
 		snd_iprintf(buffer, "closed\n");
 		return;
@@ -347,10 +374,11 @@ static void snd_pcm_substream_proc_hw_params_read(snd_info_entry_t *entry, snd_i
 	snd_pcm_stream_unlock_irq(substream);
 }
 
-static void snd_pcm_substream_proc_sw_params_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_substream_proc_sw_params_read(struct snd_info_entry *entry,
+						  struct snd_info_buffer *buffer)
 {
-	snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data;
-	snd_pcm_runtime_t *runtime = substream->runtime;
+	struct snd_pcm_substream *substream = entry->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
 	if (!runtime) {
 		snd_iprintf(buffer, "closed\n");
 		return;
@@ -374,11 +402,12 @@ static void snd_pcm_substream_proc_sw_params_read(snd_info_entry_t *entry, snd_i
 	snd_pcm_stream_unlock_irq(substream);
 }
 
-static void snd_pcm_substream_proc_status_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_substream_proc_status_read(struct snd_info_entry *entry,
+					       struct snd_info_buffer *buffer)
 {
-	snd_pcm_substream_t *substream = (snd_pcm_substream_t *)entry->private_data;
-	snd_pcm_runtime_t *runtime = substream->runtime;
-	snd_pcm_status_t status;
+	struct snd_pcm_substream *substream = entry->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_pcm_status status;
 	int err;
 	if (!runtime) {
 		snd_iprintf(buffer, "closed\n");
@@ -402,28 +431,29 @@ static void snd_pcm_substream_proc_status_read(snd_info_entry_t *entry, snd_info
 	snd_iprintf(buffer, "hw_ptr      : %ld\n", runtime->status->hw_ptr);
 	snd_iprintf(buffer, "appl_ptr    : %ld\n", runtime->control->appl_ptr);
 }
-#endif
 
 #ifdef CONFIG_SND_DEBUG
-static void snd_pcm_xrun_debug_read(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_xrun_debug_read(struct snd_info_entry *entry,
+				    struct snd_info_buffer *buffer)
 {
-	snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data;
+	struct snd_pcm_str *pstr = entry->private_data;
 	snd_iprintf(buffer, "%d\n", pstr->xrun_debug);
 }
 
-static void snd_pcm_xrun_debug_write(snd_info_entry_t *entry, snd_info_buffer_t *buffer)
+static void snd_pcm_xrun_debug_write(struct snd_info_entry *entry,
+				     struct snd_info_buffer *buffer)
 {
-	snd_pcm_str_t *pstr = (snd_pcm_str_t *)entry->private_data;
+	struct snd_pcm_str *pstr = entry->private_data;
 	char line[64];
 	if (!snd_info_get_line(buffer, line, sizeof(line)))
 		pstr->xrun_debug = simple_strtoul(line, NULL, 10);
 }
 #endif
 
-static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr)
+static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr)
 {
-	snd_pcm_t *pcm = pstr->pcm;
-	snd_info_entry_t *entry;
+	struct snd_pcm *pcm = pstr->pcm;
+	struct snd_info_entry *entry;
 	char name[16];
 
 	sprintf(name, "pcm%i%c", pcm->device, 
@@ -447,7 +477,8 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr)
 	pstr->proc_info_entry = entry;
 
 #ifdef CONFIG_SND_DEBUG
-	if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug", pstr->proc_root)) != NULL) {
+	if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug",
+						pstr->proc_root)) != NULL) {
 		entry->c.text.read_size = 64;
 		entry->c.text.read = snd_pcm_xrun_debug_read;
 		entry->c.text.write_size = 64;
@@ -464,7 +495,7 @@ static int snd_pcm_stream_proc_init(snd_pcm_str_t *pstr)
 	return 0;
 }
 
-static int snd_pcm_stream_proc_done(snd_pcm_str_t *pstr)
+static int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr)
 {
 #ifdef CONFIG_SND_DEBUG
 	if (pstr->proc_xrun_debug_entry) {
@@ -483,10 +514,10 @@ static int snd_pcm_stream_proc_done(snd_pcm_str_t *pstr)
 	return 0;
 }
 
-static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
+static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream)
 {
-	snd_info_entry_t *entry;
-	snd_card_t *card;
+	struct snd_info_entry *entry;
+	struct snd_card *card;
 	char name[16];
 
 	card = substream->pcm->card;
@@ -540,7 +571,7 @@ static int snd_pcm_substream_proc_init(snd_pcm_substream_t *substream)
 	return 0;
 }
 		
-static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream)
+static int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream)
 {
 	if (substream->proc_info_entry) {
 		snd_info_unregister(substream->proc_info_entry);
@@ -564,6 +595,12 @@ static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream)
 	}
 	return 0;
 }
+#else /* !CONFIG_PROC_FS */
+static inline int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) { return 0; }
+static inline int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) { return 0; }
+static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { return 0; }
+static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { return 0; }
+#endif /* CONFIG_PROC_FS */
 
 /**
  * snd_pcm_new_stream - create a new PCM stream
@@ -578,11 +615,11 @@ static int snd_pcm_substream_proc_done(snd_pcm_substream_t *substream)
  *
  * Returns zero if successful, or a negative error code on failure.
  */
-int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count)
+int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count)
 {
 	int idx, err;
-	snd_pcm_str_t *pstr = &pcm->streams[stream];
-	snd_pcm_substream_t *substream, *prev;
+	struct snd_pcm_str *pstr = &pcm->streams[stream];
+	struct snd_pcm_substream *substream, *prev;
 
 #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
 	init_MUTEX(&pstr->oss.setup_mutex);
@@ -590,17 +627,20 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count)
 	pstr->stream = stream;
 	pstr->pcm = pcm;
 	pstr->substream_count = substream_count;
-	pstr->reg = &snd_pcm_reg[stream];
 	if (substream_count > 0) {
 		err = snd_pcm_stream_proc_init(pstr);
-		if (err < 0)
+		if (err < 0) {
+			snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n");
 			return err;
+		}
 	}
 	prev = NULL;
 	for (idx = 0, prev = NULL; idx < substream_count; idx++) {
 		substream = kzalloc(sizeof(*substream), GFP_KERNEL);
-		if (substream == NULL)
+		if (substream == NULL) {
+			snd_printk(KERN_ERR "Cannot allocate PCM substream\n");
 			return -ENOMEM;
+		}
 		substream->pcm = pcm;
 		substream->pstr = pstr;
 		substream->number = idx;
@@ -613,6 +653,7 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count)
 			prev->next = substream;
 		err = snd_pcm_substream_proc_init(substream);
 		if (err < 0) {
+			snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n");
 			kfree(substream);
 			return err;
 		}
@@ -642,13 +683,13 @@ int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count)
  *
  * Returns zero if successful, or a negative error code on failure.
  */
-int snd_pcm_new(snd_card_t * card, char *id, int device,
+int snd_pcm_new(struct snd_card *card, char *id, int device,
 		int playback_count, int capture_count,
-	        snd_pcm_t ** rpcm)
+	        struct snd_pcm ** rpcm)
 {
-	snd_pcm_t *pcm;
+	struct snd_pcm *pcm;
 	int err;
-	static snd_device_ops_t ops = {
+	static struct snd_device_ops ops = {
 		.dev_free = snd_pcm_dev_free,
 		.dev_register =	snd_pcm_dev_register,
 		.dev_disconnect = snd_pcm_dev_disconnect,
@@ -659,13 +700,14 @@ int snd_pcm_new(snd_card_t * card, char *id, int device,
 	*rpcm = NULL;
 	snd_assert(card != NULL, return -ENXIO);
 	pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
-	if (pcm == NULL)
+	if (pcm == NULL) {
+		snd_printk(KERN_ERR "Cannot allocate PCM\n");
 		return -ENOMEM;
+	}
 	pcm->card = card;
 	pcm->device = device;
-	if (id) {
+	if (id)
 		strlcpy(pcm->id, id, sizeof(pcm->id));
-	}
 	if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, playback_count)) < 0) {
 		snd_pcm_free(pcm);
 		return err;
@@ -684,11 +726,11 @@ int snd_pcm_new(snd_card_t * card, char *id, int device,
 	return 0;
 }
 
-static void snd_pcm_free_stream(snd_pcm_str_t * pstr)
+static void snd_pcm_free_stream(struct snd_pcm_str * pstr)
 {
-	snd_pcm_substream_t *substream, *substream_next;
+	struct snd_pcm_substream *substream, *substream_next;
 #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
-	snd_pcm_oss_setup_t *setup, *setupn;
+	struct snd_pcm_oss_setup *setup, *setupn;
 #endif
 	substream = pstr->substream;
 	while (substream) {
@@ -707,7 +749,7 @@ static void snd_pcm_free_stream(snd_pcm_str_t * pstr)
 #endif
 }
 
-static int snd_pcm_free(snd_pcm_t *pcm)
+static int snd_pcm_free(struct snd_pcm *pcm)
 {
 	snd_assert(pcm != NULL, return -ENXIO);
 	if (pcm->private_free)
@@ -719,26 +761,26 @@ static int snd_pcm_free(snd_pcm_t *pcm)
 	return 0;
 }
 
-static int snd_pcm_dev_free(snd_device_t *device)
+static int snd_pcm_dev_free(struct snd_device *device)
 {
-	snd_pcm_t *pcm = device->device_data;
+	struct snd_pcm *pcm = device->device_data;
 	return snd_pcm_free(pcm);
 }
 
 static void snd_pcm_tick_timer_func(unsigned long data)
 {
-	snd_pcm_substream_t *substream = (snd_pcm_substream_t*) data;
+	struct snd_pcm_substream *substream = (struct snd_pcm_substream *) data;
 	snd_pcm_tick_elapsed(substream);
 }
 
-int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
-			   snd_pcm_substream_t **rsubstream)
+int snd_pcm_open_substream(struct snd_pcm *pcm, int stream,
+			   struct snd_pcm_substream **rsubstream)
 {
-	snd_pcm_str_t * pstr;
-	snd_pcm_substream_t * substream;
-	snd_pcm_runtime_t * runtime;
-	snd_ctl_file_t *kctl;
-	snd_card_t *card;
+	struct snd_pcm_str * pstr;
+	struct snd_pcm_substream *substream;
+	struct snd_pcm_runtime *runtime;
+	struct snd_ctl_file *kctl;
+	struct snd_card *card;
 	struct list_head *list;
 	int prefer_subdevice = -1;
 	size_t size;
@@ -800,7 +842,7 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
 	if (runtime == NULL)
 		return -ENOMEM;
 
-	size = PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t));
+	size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status));
 	runtime->status = snd_malloc_pages(size, GFP_KERNEL);
 	if (runtime->status == NULL) {
 		kfree(runtime);
@@ -808,10 +850,11 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
 	}
 	memset((void*)runtime->status, 0, size);
 
-	size = PAGE_ALIGN(sizeof(snd_pcm_mmap_control_t));
+	size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control));
 	runtime->control = snd_malloc_pages(size, GFP_KERNEL);
 	if (runtime->control == NULL) {
-		snd_free_pages((void*)runtime->status, PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t)));
+		snd_free_pages((void*)runtime->status,
+			       PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)));
 		kfree(runtime);
 		return -ENOMEM;
 	}
@@ -832,39 +875,39 @@ int snd_pcm_open_substream(snd_pcm_t *pcm, int stream,
 	return 0;
 }
 
-void snd_pcm_release_substream(snd_pcm_substream_t *substream)
+void snd_pcm_release_substream(struct snd_pcm_substream *substream)
 {
-	snd_pcm_runtime_t * runtime;
+	struct snd_pcm_runtime *runtime;
 	substream->file = NULL;
 	runtime = substream->runtime;
 	snd_assert(runtime != NULL, return);
 	if (runtime->private_free != NULL)
 		runtime->private_free(runtime);
-	snd_free_pages((void*)runtime->status, PAGE_ALIGN(sizeof(snd_pcm_mmap_status_t)));
-	snd_free_pages((void*)runtime->control, PAGE_ALIGN(sizeof(snd_pcm_mmap_control_t)));
+	snd_free_pages((void*)runtime->status,
+		       PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)));
+	snd_free_pages((void*)runtime->control,
+		       PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)));
 	kfree(runtime->hw_constraints.rules);
 	kfree(runtime);
 	substream->runtime = NULL;
 	substream->pstr->substream_opened--;
 }
 
-static int snd_pcm_dev_register(snd_device_t *device)
+static int snd_pcm_dev_register(struct snd_device *device)
 {
-	int idx, cidx, err;
-	unsigned short minor;
-	snd_pcm_substream_t *substream;
+	int cidx, err;
+	struct snd_pcm_substream *substream;
 	struct list_head *list;
 	char str[16];
-	snd_pcm_t *pcm = device->device_data;
+	struct snd_pcm *pcm = device->device_data;
 
 	snd_assert(pcm != NULL && device != NULL, return -ENXIO);
 	down(&register_mutex);
-	idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
-	if (snd_pcm_devices[idx]) {
+	if (snd_pcm_search(pcm->card, pcm->device)) {
 		up(&register_mutex);
 		return -EBUSY;
 	}
-	snd_pcm_devices[idx] = pcm;
+	list_add_tail(&pcm->list, &snd_pcm_devices);
 	for (cidx = 0; cidx < 2; cidx++) {
 		int devtype = -1;
 		if (pcm->streams[cidx].substream == NULL)
@@ -872,17 +915,19 @@ static int snd_pcm_dev_register(snd_device_t *device)
 		switch (cidx) {
 		case SNDRV_PCM_STREAM_PLAYBACK:
 			sprintf(str, "pcmC%iD%ip", pcm->card->number, pcm->device);
-			minor = SNDRV_MINOR_PCM_PLAYBACK + idx;
 			devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK;
 			break;
 		case SNDRV_PCM_STREAM_CAPTURE:
 			sprintf(str, "pcmC%iD%ic", pcm->card->number, pcm->device);
-			minor = SNDRV_MINOR_PCM_CAPTURE + idx;
 			devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE;
 			break;
 		}
-		if ((err = snd_register_device(devtype, pcm->card, pcm->device, pcm->streams[cidx].reg, str)) < 0) {
-			snd_pcm_devices[idx] = NULL;
+		if ((err = snd_register_device(devtype, pcm->card,
+					       pcm->device,
+					       &snd_pcm_f_ops[cidx],
+					       pcm, str)) < 0)
+		{
+			list_del(&pcm->list);
 			up(&register_mutex);
 			return err;
 		}
@@ -890,48 +935,46 @@ static int snd_pcm_dev_register(snd_device_t *device)
 			snd_pcm_timer_init(substream);
 	}
 	list_for_each(list, &snd_pcm_notify_list) {
-		snd_pcm_notify_t *notify;
-		notify = list_entry(list, snd_pcm_notify_t, list);
+		struct snd_pcm_notify *notify;
+		notify = list_entry(list, struct snd_pcm_notify, list);
 		notify->n_register(pcm);
 	}
 	up(&register_mutex);
 	return 0;
 }
 
-static int snd_pcm_dev_disconnect(snd_device_t *device)
+static int snd_pcm_dev_disconnect(struct snd_device *device)
 {
-	snd_pcm_t *pcm = device->device_data;
+	struct snd_pcm *pcm = device->device_data;
 	struct list_head *list;
-	snd_pcm_substream_t *substream;
-	int idx, cidx;
+	struct snd_pcm_substream *substream;
+	int cidx;
 
 	down(&register_mutex);
-	idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
-	snd_pcm_devices[idx] = NULL;
+	list_del_init(&pcm->list);
 	for (cidx = 0; cidx < 2; cidx++)
 		for (substream = pcm->streams[cidx].substream; substream; substream = substream->next)
 			if (substream->runtime)
 				substream->runtime->status->state = SNDRV_PCM_STATE_DISCONNECTED;
 	list_for_each(list, &snd_pcm_notify_list) {
-		snd_pcm_notify_t *notify;
-		notify = list_entry(list, snd_pcm_notify_t, list);
+		struct snd_pcm_notify *notify;
+		notify = list_entry(list, struct snd_pcm_notify, list);
 		notify->n_disconnect(pcm);
 	}
 	up(&register_mutex);
 	return 0;
 }
 
-static int snd_pcm_dev_unregister(snd_device_t *device)
+static int snd_pcm_dev_unregister(struct snd_device *device)
 {
-	int idx, cidx, devtype;
-	snd_pcm_substream_t *substream;
+	int cidx, devtype;
+	struct snd_pcm_substream *substream;
 	struct list_head *list;
-	snd_pcm_t *pcm = device->device_data;
+	struct snd_pcm *pcm = device->device_data;
 
 	snd_assert(pcm != NULL, return -ENXIO);
 	down(&register_mutex);
-	idx = (pcm->card->number * SNDRV_PCM_DEVICES) + pcm->device;
-	snd_pcm_devices[idx] = NULL;
+	list_del(&pcm->list);
 	for (cidx = 0; cidx < 2; cidx++) {
 		devtype = -1;
 		switch (cidx) {
@@ -947,84 +990,99 @@ static int snd_pcm_dev_unregister(snd_device_t *device)
 			snd_pcm_timer_done(substream);
 	}
 	list_for_each(list, &snd_pcm_notify_list) {
-		snd_pcm_notify_t *notify;
-		notify = list_entry(list, snd_pcm_notify_t, list);
+		struct snd_pcm_notify *notify;
+		notify = list_entry(list, struct snd_pcm_notify, list);
 		notify->n_unregister(pcm);
 	}
 	up(&register_mutex);
 	return snd_pcm_free(pcm);
 }
 
-int snd_pcm_notify(snd_pcm_notify_t *notify, int nfree)
+int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree)
 {
-	int idx;
+	struct list_head *p;
 
 	snd_assert(notify != NULL && notify->n_register != NULL && notify->n_unregister != NULL, return -EINVAL);
 	down(&register_mutex);
 	if (nfree) {
 		list_del(&notify->list);
-		for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) {
-			if (snd_pcm_devices[idx] == NULL)
-				continue;
-			notify->n_unregister(snd_pcm_devices[idx]);
-		}
+		list_for_each(p, &snd_pcm_devices)
+			notify->n_unregister(list_entry(p,
+							struct snd_pcm, list));
 	} else {
 		list_add_tail(&notify->list, &snd_pcm_notify_list);
-		for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) {
-			if (snd_pcm_devices[idx] == NULL)
-				continue;
-			notify->n_register(snd_pcm_devices[idx]);
-		}
+		list_for_each(p, &snd_pcm_devices)
+			notify->n_register(list_entry(p, struct snd_pcm, list));
 	}
 	up(&register_mutex);
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 /*
  *  Info interface
  */
 
-static void snd_pcm_proc_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+static void snd_pcm_proc_read(struct snd_info_entry *entry,
+			      struct snd_info_buffer *buffer)
 {
-	int idx;
-	snd_pcm_t *pcm;
+	struct list_head *p;
+	struct snd_pcm *pcm;
 
 	down(&register_mutex);
-	for (idx = 0; idx < SNDRV_CARDS * SNDRV_PCM_DEVICES; idx++) {
-		pcm = snd_pcm_devices[idx];
-		if (pcm == NULL)
-			continue;
-		snd_iprintf(buffer, "%02i-%02i: %s : %s", idx / SNDRV_PCM_DEVICES,
-			    idx % SNDRV_PCM_DEVICES, pcm->id, pcm->name);
+	list_for_each(p, &snd_pcm_devices) {
+		pcm = list_entry(p, struct snd_pcm, list);
+		snd_iprintf(buffer, "%02i-%02i: %s : %s",
+			    pcm->card->number, pcm->device, pcm->id, pcm->name);
 		if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream)
-			snd_iprintf(buffer, " : playback %i", pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count);
+			snd_iprintf(buffer, " : playback %i",
+				    pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count);
 		if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream)
-			snd_iprintf(buffer, " : capture %i", pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count);
+			snd_iprintf(buffer, " : capture %i",
+				    pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count);
 		snd_iprintf(buffer, "\n");
 	}
 	up(&register_mutex);
 }
 
-/*
- *  ENTRY functions
- */
-
-static snd_info_entry_t *snd_pcm_proc_entry = NULL;
+static struct snd_info_entry *snd_pcm_proc_entry = NULL;
 
-static int __init alsa_pcm_init(void)
+static void snd_pcm_proc_init(void)
 {
-	snd_info_entry_t *entry;
+	struct snd_info_entry *entry;
 
-	snd_ctl_register_ioctl(snd_pcm_control_ioctl);
-	snd_ctl_register_ioctl_compat(snd_pcm_control_ioctl);
 	if ((entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL)) != NULL) {
-		snd_info_set_text_ops(entry, NULL, SNDRV_CARDS * SNDRV_PCM_DEVICES * 128, snd_pcm_proc_read);
+		snd_info_set_text_ops(entry, NULL, SNDRV_CARDS * SNDRV_PCM_DEVICES * 128,
+				      snd_pcm_proc_read);
 		if (snd_info_register(entry) < 0) {
 			snd_info_free_entry(entry);
 			entry = NULL;
 		}
 	}
 	snd_pcm_proc_entry = entry;
+}
+
+static void snd_pcm_proc_done(void)
+{
+	if (snd_pcm_proc_entry)
+		snd_info_unregister(snd_pcm_proc_entry);
+}
+
+#else /* !CONFIG_PROC_FS */
+#define snd_pcm_proc_init()
+#define snd_pcm_proc_done()
+#endif /* CONFIG_PROC_FS */
+
+
+/*
+ *  ENTRY functions
+ */
+
+static int __init alsa_pcm_init(void)
+{
+	snd_ctl_register_ioctl(snd_pcm_control_ioctl);
+	snd_ctl_register_ioctl_compat(snd_pcm_control_ioctl);
+	snd_pcm_proc_init();
 	return 0;
 }
 
@@ -1032,16 +1090,12 @@ static void __exit alsa_pcm_exit(void)
 {
 	snd_ctl_unregister_ioctl(snd_pcm_control_ioctl);
 	snd_ctl_unregister_ioctl_compat(snd_pcm_control_ioctl);
-	if (snd_pcm_proc_entry) {
-		snd_info_unregister(snd_pcm_proc_entry);
-		snd_pcm_proc_entry = NULL;
-	}
+	snd_pcm_proc_done();
 }
 
 module_init(alsa_pcm_init)
 module_exit(alsa_pcm_exit)
 
-EXPORT_SYMBOL(snd_pcm_devices);
 EXPORT_SYMBOL(snd_pcm_new);
 EXPORT_SYMBOL(snd_pcm_new_stream);
 EXPORT_SYMBOL(snd_pcm_notify);