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Diffstat (limited to 'sound/core/seq/seq_ports.c')
-rw-r--r--sound/core/seq/seq_ports.c229
1 files changed, 120 insertions, 109 deletions
diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c
index 57ec31df0d1..794a341bf0e 100644
--- a/sound/core/seq/seq_ports.c
+++ b/sound/core/seq/seq_ports.c
@@ -1,7 +1,7 @@
/*
* ALSA sequencer Ports
* Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
- * Jaroslav Kysela <perex@suse.cz>
+ * Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
@@ -20,9 +20,9 @@
*
*/
-#include <sound/driver.h>
#include <sound/core.h>
#include <linux/slab.h>
+#include <linux/module.h>
#include "seq_system.h"
#include "seq_ports.h"
#include "seq_clientmgr.h"
@@ -56,16 +56,15 @@ much elements are in array.
*/
/* return pointer to port structure - port is locked if found */
-client_port_t *snd_seq_port_use_ptr(client_t *client, int num)
+struct snd_seq_client_port *snd_seq_port_use_ptr(struct snd_seq_client *client,
+ int num)
{
- struct list_head *p;
- client_port_t *port;
+ struct snd_seq_client_port *port;
if (client == NULL)
return NULL;
read_lock(&client->ports_lock);
- list_for_each(p, &client->ports_list_head) {
- port = list_entry(p, client_port_t, list);
+ list_for_each_entry(port, &client->ports_list_head, list) {
if (port->addr.port == num) {
if (port->closing)
break; /* deleting now */
@@ -80,17 +79,16 @@ client_port_t *snd_seq_port_use_ptr(client_t *client, int num)
/* search for the next port - port is locked if found */
-client_port_t *snd_seq_port_query_nearest(client_t *client, snd_seq_port_info_t *pinfo)
+struct snd_seq_client_port *snd_seq_port_query_nearest(struct snd_seq_client *client,
+ struct snd_seq_port_info *pinfo)
{
int num;
- struct list_head *p;
- client_port_t *port, *found;
+ struct snd_seq_client_port *port, *found;
num = pinfo->addr.port;
found = NULL;
read_lock(&client->ports_lock);
- list_for_each(p, &client->ports_list_head) {
- port = list_entry(p, client_port_t, list);
+ list_for_each_entry(port, &client->ports_list_head, list) {
if (port->addr.port < num)
continue;
if (port->addr.port == num) {
@@ -111,8 +109,8 @@ client_port_t *snd_seq_port_query_nearest(client_t *client, snd_seq_port_info_t
}
-/* initialize port_subs_info_t */
-static void port_subs_info_init(port_subs_info_t *grp)
+/* initialize snd_seq_port_subs_info */
+static void port_subs_info_init(struct snd_seq_port_subs_info *grp)
{
INIT_LIST_HEAD(&grp->list_head);
grp->count = 0;
@@ -125,25 +123,26 @@ static void port_subs_info_init(port_subs_info_t *grp)
/* create a port, port number is returned (-1 on failure) */
-client_port_t *snd_seq_create_port(client_t *client, int port)
+struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client,
+ int port)
{
unsigned long flags;
- client_port_t *new_port;
- struct list_head *l;
+ struct snd_seq_client_port *new_port, *p;
int num = -1;
/* sanity check */
- snd_assert(client, return NULL);
+ if (snd_BUG_ON(!client))
+ return NULL;
if (client->num_ports >= SNDRV_SEQ_MAX_PORTS - 1) {
- snd_printk(KERN_WARNING "too many ports for client %d\n", client->number);
+ pr_warn("ALSA: seq: too many ports for client %d\n", client->number);
return NULL;
}
/* create a new port */
new_port = kzalloc(sizeof(*new_port), GFP_KERNEL);
if (! new_port) {
- snd_printd("malloc failed for registering client port\n");
+ pr_debug("ALSA: seq: malloc failed for registering client port\n");
return NULL; /* failure, out of memory */
}
/* init port data */
@@ -156,38 +155,44 @@ client_port_t *snd_seq_create_port(client_t *client, int port)
port_subs_info_init(&new_port->c_dest);
num = port >= 0 ? port : 0;
- down(&client->ports_mutex);
+ mutex_lock(&client->ports_mutex);
write_lock_irqsave(&client->ports_lock, flags);
- list_for_each(l, &client->ports_list_head) {
- client_port_t *p = list_entry(l, client_port_t, list);
+ list_for_each_entry(p, &client->ports_list_head, list) {
if (p->addr.port > num)
break;
if (port < 0) /* auto-probe mode */
num = p->addr.port + 1;
}
/* insert the new port */
- list_add_tail(&new_port->list, l);
+ list_add_tail(&new_port->list, &p->list);
client->num_ports++;
new_port->addr.port = num; /* store the port number in the port */
write_unlock_irqrestore(&client->ports_lock, flags);
- up(&client->ports_mutex);
+ mutex_unlock(&client->ports_mutex);
sprintf(new_port->name, "port-%d", num);
return new_port;
}
/* */
-enum group_type_t {
+enum group_type {
SRC_LIST, DEST_LIST
};
-static int subscribe_port(client_t *client, client_port_t *port, port_subs_info_t *grp, snd_seq_port_subscribe_t *info, int send_ack);
-static int unsubscribe_port(client_t *client, client_port_t *port, port_subs_info_t *grp, snd_seq_port_subscribe_t *info, int send_ack);
+static int subscribe_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+ struct snd_seq_port_subscribe *info, int send_ack);
+static int unsubscribe_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+ struct snd_seq_port_subscribe *info, int send_ack);
-static client_port_t *get_client_port(snd_seq_addr_t *addr, client_t **cp)
+static struct snd_seq_client_port *get_client_port(struct snd_seq_addr *addr,
+ struct snd_seq_client **cp)
{
- client_port_t *p;
+ struct snd_seq_client_port *p;
*cp = snd_seq_client_use_ptr(addr->client);
if (*cp) {
p = snd_seq_port_use_ptr(*cp, addr->port);
@@ -204,22 +209,23 @@ static client_port_t *get_client_port(snd_seq_addr_t *addr, client_t **cp)
* remove all subscribers on the list
* this is called from port_delete, for each src and dest list.
*/
-static void clear_subscriber_list(client_t *client, client_port_t *port,
- port_subs_info_t *grp, int grptype)
+static void clear_subscriber_list(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+ int grptype)
{
struct list_head *p, *n;
- down_write(&grp->list_mutex);
list_for_each_safe(p, n, &grp->list_head) {
- subscribers_t *subs;
- client_t *c;
- client_port_t *aport;
+ struct snd_seq_subscribers *subs;
+ struct snd_seq_client *c;
+ struct snd_seq_client_port *aport;
if (grptype == SRC_LIST) {
- subs = list_entry(p, subscribers_t, src_list);
+ subs = list_entry(p, struct snd_seq_subscribers, src_list);
aport = get_client_port(&subs->info.dest, &c);
} else {
- subs = list_entry(p, subscribers_t, dest_list);
+ subs = list_entry(p, struct snd_seq_subscribers, dest_list);
aport = get_client_port(&subs->info.sender, &c);
}
list_del(p);
@@ -233,25 +239,25 @@ static void clear_subscriber_list(client_t *client, client_port_t *port,
kfree(subs);
} else {
/* ok we got the connected port */
- port_subs_info_t *agrp;
+ struct snd_seq_port_subs_info *agrp;
agrp = (grptype == SRC_LIST) ? &aport->c_dest : &aport->c_src;
down_write(&agrp->list_mutex);
if (grptype == SRC_LIST)
list_del(&subs->dest_list);
else
list_del(&subs->src_list);
+ up_write(&agrp->list_mutex);
unsubscribe_port(c, aport, agrp, &subs->info, 1);
kfree(subs);
- up_write(&agrp->list_mutex);
snd_seq_port_unlock(aport);
snd_seq_client_unlock(c);
}
}
- up_write(&grp->list_mutex);
}
/* delete port data */
-static int port_delete(client_t *client, client_port_t *port)
+static int port_delete(struct snd_seq_client *client,
+ struct snd_seq_client_port *port)
{
/* set closing flag and wait for all port access are gone */
port->closing = 1;
@@ -264,8 +270,8 @@ static int port_delete(client_t *client, client_port_t *port)
if (port->private_free)
port->private_free(port->private_data);
- snd_assert(port->c_src.count == 0,);
- snd_assert(port->c_dest.count == 0,);
+ snd_BUG_ON(port->c_src.count != 0);
+ snd_BUG_ON(port->c_dest.count != 0);
kfree(port);
return 0;
@@ -273,26 +279,24 @@ static int port_delete(client_t *client, client_port_t *port)
/* delete a port with the given port id */
-int snd_seq_delete_port(client_t *client, int port)
+int snd_seq_delete_port(struct snd_seq_client *client, int port)
{
unsigned long flags;
- struct list_head *l;
- client_port_t *found = NULL;
+ struct snd_seq_client_port *found = NULL, *p;
- down(&client->ports_mutex);
+ mutex_lock(&client->ports_mutex);
write_lock_irqsave(&client->ports_lock, flags);
- list_for_each(l, &client->ports_list_head) {
- client_port_t *p = list_entry(l, client_port_t, list);
+ list_for_each_entry(p, &client->ports_list_head, list) {
if (p->addr.port == port) {
/* ok found. delete from the list at first */
- list_del(l);
+ list_del(&p->list);
client->num_ports--;
found = p;
break;
}
}
write_unlock_irqrestore(&client->ports_lock, flags);
- up(&client->ports_mutex);
+ mutex_unlock(&client->ports_mutex);
if (found)
return port_delete(client, found);
else
@@ -300,21 +304,20 @@ int snd_seq_delete_port(client_t *client, int port)
}
/* delete the all ports belonging to the given client */
-int snd_seq_delete_all_ports(client_t *client)
+int snd_seq_delete_all_ports(struct snd_seq_client *client)
{
unsigned long flags;
- struct list_head deleted_list, *p, *n;
+ struct list_head deleted_list;
+ struct snd_seq_client_port *port, *tmp;
/* move the port list to deleted_list, and
* clear the port list in the client data.
*/
- down(&client->ports_mutex);
+ mutex_lock(&client->ports_mutex);
write_lock_irqsave(&client->ports_lock, flags);
if (! list_empty(&client->ports_list_head)) {
- __list_add(&deleted_list,
- client->ports_list_head.prev,
- client->ports_list_head.next);
- INIT_LIST_HEAD(&client->ports_list_head);
+ list_add(&deleted_list, &client->ports_list_head);
+ list_del_init(&client->ports_list_head);
} else {
INIT_LIST_HEAD(&deleted_list);
}
@@ -322,20 +325,21 @@ int snd_seq_delete_all_ports(client_t *client)
write_unlock_irqrestore(&client->ports_lock, flags);
/* remove each port in deleted_list */
- list_for_each_safe(p, n, &deleted_list) {
- client_port_t *port = list_entry(p, client_port_t, list);
- list_del(p);
+ list_for_each_entry_safe(port, tmp, &deleted_list, list) {
+ list_del(&port->list);
snd_seq_system_client_ev_port_exit(port->addr.client, port->addr.port);
port_delete(client, port);
}
- up(&client->ports_mutex);
+ mutex_unlock(&client->ports_mutex);
return 0;
}
/* set port info fields */
-int snd_seq_set_port_info(client_port_t * port, snd_seq_port_info_t * info)
+int snd_seq_set_port_info(struct snd_seq_client_port * port,
+ struct snd_seq_port_info * info)
{
- snd_assert(port && info, return -EINVAL);
+ if (snd_BUG_ON(!port || !info))
+ return -EINVAL;
/* set port name */
if (info->name[0])
@@ -361,9 +365,11 @@ int snd_seq_set_port_info(client_port_t * port, snd_seq_port_info_t * info)
}
/* get port info fields */
-int snd_seq_get_port_info(client_port_t * port, snd_seq_port_info_t * info)
+int snd_seq_get_port_info(struct snd_seq_client_port * port,
+ struct snd_seq_port_info * info)
{
- snd_assert(port && info, return -EINVAL);
+ if (snd_BUG_ON(!port || !info))
+ return -EINVAL;
/* get port name */
strlcpy(info->name, port->name, sizeof(info->name));
@@ -407,11 +413,14 @@ int snd_seq_get_port_info(client_port_t * port, snd_seq_port_info_t * info)
* initialization or termination of devices (see seq_midi.c).
*
* If callback_all option is set, the callback function is invoked
- * at each connnection/disconnection.
+ * at each connection/disconnection.
*/
-static int subscribe_port(client_t *client, client_port_t *port, port_subs_info_t *grp,
- snd_seq_port_subscribe_t *info, int send_ack)
+static int subscribe_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+ struct snd_seq_port_subscribe *info,
+ int send_ack)
{
int err = 0;
@@ -432,9 +441,11 @@ static int subscribe_port(client_t *client, client_port_t *port, port_subs_info_
return err;
}
-static int unsubscribe_port(client_t *client, client_port_t *port,
- port_subs_info_t *grp,
- snd_seq_port_subscribe_t *info, int send_ack)
+static int unsubscribe_port(struct snd_seq_client *client,
+ struct snd_seq_client_port *port,
+ struct snd_seq_port_subs_info *grp,
+ struct snd_seq_port_subscribe *info,
+ int send_ack)
{
int err = 0;
@@ -453,15 +464,15 @@ static int unsubscribe_port(client_t *client, client_port_t *port,
/* check if both addresses are identical */
-static inline int addr_match(snd_seq_addr_t *r, snd_seq_addr_t *s)
+static inline int addr_match(struct snd_seq_addr *r, struct snd_seq_addr *s)
{
return (r->client == s->client) && (r->port == s->port);
}
/* check the two subscribe info match */
/* if flags is zero, checks only sender and destination addresses */
-static int match_subs_info(snd_seq_port_subscribe_t *r,
- snd_seq_port_subscribe_t *s)
+static int match_subs_info(struct snd_seq_port_subscribe *r,
+ struct snd_seq_port_subscribe *s)
{
if (addr_match(&r->sender, &s->sender) &&
addr_match(&r->dest, &s->dest)) {
@@ -475,15 +486,16 @@ static int match_subs_info(snd_seq_port_subscribe_t *r,
/* connect two ports */
-int snd_seq_port_connect(client_t *connector,
- client_t *src_client, client_port_t *src_port,
- client_t *dest_client, client_port_t *dest_port,
- snd_seq_port_subscribe_t *info)
+int snd_seq_port_connect(struct snd_seq_client *connector,
+ struct snd_seq_client *src_client,
+ struct snd_seq_client_port *src_port,
+ struct snd_seq_client *dest_client,
+ struct snd_seq_client_port *dest_port,
+ struct snd_seq_port_subscribe *info)
{
- port_subs_info_t *src = &src_port->c_src;
- port_subs_info_t *dest = &dest_port->c_dest;
- subscribers_t *subs;
- struct list_head *p;
+ struct snd_seq_port_subs_info *src = &src_port->c_src;
+ struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
+ struct snd_seq_subscribers *subs, *s;
int err, src_called = 0;
unsigned long flags;
int exclusive;
@@ -496,7 +508,7 @@ int snd_seq_port_connect(client_t *connector,
atomic_set(&subs->ref_count, 2);
down_write(&src->list_mutex);
- down_write(&dest->list_mutex);
+ down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
exclusive = info->flags & SNDRV_SEQ_PORT_SUBS_EXCLUSIVE ? 1 : 0;
err = -EBUSY;
@@ -507,13 +519,11 @@ int snd_seq_port_connect(client_t *connector,
if (src->exclusive || dest->exclusive)
goto __error;
/* check whether already exists */
- list_for_each(p, &src->list_head) {
- subscribers_t *s = list_entry(p, subscribers_t, src_list);
+ list_for_each_entry(s, &src->list_head, src_list) {
if (match_subs_info(info, &s->info))
goto __error;
}
- list_for_each(p, &dest->list_head) {
- subscribers_t *s = list_entry(p, subscribers_t, dest_list);
+ list_for_each_entry(s, &dest->list_head, dest_list) {
if (match_subs_info(info, &s->info))
goto __error;
}
@@ -554,24 +564,24 @@ int snd_seq_port_connect(client_t *connector,
/* remove the connection */
-int snd_seq_port_disconnect(client_t *connector,
- client_t *src_client, client_port_t *src_port,
- client_t *dest_client, client_port_t *dest_port,
- snd_seq_port_subscribe_t *info)
+int snd_seq_port_disconnect(struct snd_seq_client *connector,
+ struct snd_seq_client *src_client,
+ struct snd_seq_client_port *src_port,
+ struct snd_seq_client *dest_client,
+ struct snd_seq_client_port *dest_port,
+ struct snd_seq_port_subscribe *info)
{
- port_subs_info_t *src = &src_port->c_src;
- port_subs_info_t *dest = &dest_port->c_dest;
- subscribers_t *subs;
- struct list_head *p;
+ struct snd_seq_port_subs_info *src = &src_port->c_src;
+ struct snd_seq_port_subs_info *dest = &dest_port->c_dest;
+ struct snd_seq_subscribers *subs;
int err = -ENOENT;
unsigned long flags;
down_write(&src->list_mutex);
- down_write(&dest->list_mutex);
+ down_write_nested(&dest->list_mutex, SINGLE_DEPTH_NESTING);
/* look for the connection */
- list_for_each(p, &src->list_head) {
- subs = list_entry(p, subscribers_t, src_list);
+ list_for_each_entry(subs, &src->list_head, src_list) {
if (match_subs_info(info, &subs->info)) {
write_lock_irqsave(&src->list_lock, flags);
// write_lock(&dest->list_lock); // no lock yet
@@ -597,15 +607,13 @@ int snd_seq_port_disconnect(client_t *connector,
/* get matched subscriber */
-subscribers_t *snd_seq_port_get_subscription(port_subs_info_t *src_grp,
- snd_seq_addr_t *dest_addr)
+struct snd_seq_subscribers *snd_seq_port_get_subscription(struct snd_seq_port_subs_info *src_grp,
+ struct snd_seq_addr *dest_addr)
{
- struct list_head *p;
- subscribers_t *s, *found = NULL;
+ struct snd_seq_subscribers *s, *found = NULL;
down_read(&src_grp->list_mutex);
- list_for_each(p, &src_grp->list_head) {
- s = list_entry(p, subscribers_t, src_list);
+ list_for_each_entry(s, &src_grp->list_head, src_list) {
if (addr_match(dest_addr, &s->info.dest)) {
found = s;
break;
@@ -623,11 +631,11 @@ subscribers_t *snd_seq_port_get_subscription(port_subs_info_t *src_grp,
*/
/* exported */
int snd_seq_event_port_attach(int client,
- snd_seq_port_callback_t *pcbp,
+ struct snd_seq_port_callback *pcbp,
int cap, int type, int midi_channels,
int midi_voices, char *portname)
{
- snd_seq_port_info_t portinfo;
+ struct snd_seq_port_info portinfo;
int ret;
/* Set up the port */
@@ -653,6 +661,7 @@ int snd_seq_event_port_attach(int client,
return ret;
}
+EXPORT_SYMBOL(snd_seq_event_port_attach);
/*
* Detach the driver from a port.
@@ -660,7 +669,7 @@ int snd_seq_event_port_attach(int client,
/* exported */
int snd_seq_event_port_detach(int client, int port)
{
- snd_seq_port_info_t portinfo;
+ struct snd_seq_port_info portinfo;
int err;
memset(&portinfo, 0, sizeof(portinfo));
@@ -672,3 +681,5 @@ int snd_seq_event_port_detach(int client, int port)
return err;
}
+
+EXPORT_SYMBOL(snd_seq_event_port_detach);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:07:11 +0000