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path: root/sound/core/seq/seq_clientmgr.c
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Diffstat (limited to 'sound/core/seq/seq_clientmgr.c')
-rw-r--r--sound/core/seq/seq_clientmgr.c98
1 files changed, 62 insertions, 36 deletions
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 47cfa5186e3..225c73152ee 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -22,6 +22,7 @@
*/
#include <linux/init.h>
+#include <linux/export.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/minors.h>
@@ -122,7 +123,7 @@ static inline int snd_seq_write_pool_allocated(struct snd_seq_client *client)
static struct snd_seq_client *clientptr(int clientid)
{
if (clientid < 0 || clientid >= SNDRV_SEQ_MAX_CLIENTS) {
- snd_printd("Seq: oops. Trying to get pointer to client %d\n",
+ pr_debug("ALSA: seq: oops. Trying to get pointer to client %d\n",
clientid);
return NULL;
}
@@ -135,7 +136,7 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid)
struct snd_seq_client *client;
if (clientid < 0 || clientid >= SNDRV_SEQ_MAX_CLIENTS) {
- snd_printd("Seq: oops. Trying to get pointer to client %d\n",
+ pr_debug("ALSA: seq: oops. Trying to get pointer to client %d\n",
clientid);
return NULL;
}
@@ -148,7 +149,7 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid)
return NULL;
}
spin_unlock_irqrestore(&clients_lock, flags);
-#ifdef CONFIG_KMOD
+#ifdef CONFIG_MODULES
if (!in_interrupt()) {
static char client_requested[SNDRV_SEQ_GLOBAL_CLIENTS];
static char card_requested[SNDRV_CARDS];
@@ -266,7 +267,8 @@ static int seq_free_client1(struct snd_seq_client *client)
{
unsigned long flags;
- snd_assert(client != NULL, return -EINVAL);
+ if (!client)
+ return 0;
snd_seq_delete_all_ports(client);
snd_seq_queue_client_leave(client->number);
spin_lock_irqsave(&clients_lock, flags);
@@ -289,8 +291,8 @@ static void seq_free_client(struct snd_seq_client * client)
mutex_lock(&register_mutex);
switch (client->type) {
case NO_CLIENT:
- snd_printk(KERN_WARNING "Seq: Trying to free unused client %d\n",
- client->number);
+ pr_warn("ALSA: seq: Trying to free unused client %d\n",
+ client->number);
break;
case USER_CLIENT:
case KERNEL_CLIENT:
@@ -299,7 +301,7 @@ static void seq_free_client(struct snd_seq_client * client)
break;
default:
- snd_printk(KERN_ERR "Seq: Trying to free client %d with undefined type = %d\n",
+ pr_err("ALSA: seq: Trying to free client %d with undefined type = %d\n",
client->number, client->type);
}
mutex_unlock(&register_mutex);
@@ -317,6 +319,11 @@ static int snd_seq_open(struct inode *inode, struct file *file)
int c, mode; /* client id */
struct snd_seq_client *client;
struct snd_seq_user_client *user;
+ int err;
+
+ err = nonseekable_open(inode, file);
+ if (err < 0)
+ return err;
if (mutex_lock_interruptible(&register_mutex))
return -ERESTARTSYS;
@@ -403,7 +410,8 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count,
return -EFAULT;
/* check client structures are in place */
- snd_assert(client != NULL, return -ENXIO);
+ if (snd_BUG_ON(!client))
+ return -ENXIO;
if (!client->accept_input || (fifo = client->data.user.fifo) == NULL)
return -ENXIO;
@@ -652,7 +660,7 @@ static int deliver_to_subscribers(struct snd_seq_client *client,
int atomic, int hop)
{
struct snd_seq_subscribers *subs;
- int err = 0, num_ev = 0;
+ int err, result = 0, num_ev = 0;
struct snd_seq_event event_saved;
struct snd_seq_client_port *src_port;
struct snd_seq_port_subs_info *grp;
@@ -677,8 +685,12 @@ static int deliver_to_subscribers(struct snd_seq_client *client,
subs->info.flags & SNDRV_SEQ_PORT_SUBS_TIME_REAL);
err = snd_seq_deliver_single_event(client, event,
0, atomic, hop);
- if (err < 0)
- break;
+ if (err < 0) {
+ /* save first error that occurs and continue */
+ if (!result)
+ result = err;
+ continue;
+ }
num_ev++;
/* restore original event record */
*event = event_saved;
@@ -689,7 +701,7 @@ static int deliver_to_subscribers(struct snd_seq_client *client,
up_read(&grp->list_mutex);
*event = event_saved; /* restore */
snd_seq_port_unlock(src_port);
- return (err < 0) ? err : num_ev;
+ return (result < 0) ? result : num_ev;
}
@@ -701,7 +713,7 @@ static int port_broadcast_event(struct snd_seq_client *client,
struct snd_seq_event *event,
int atomic, int hop)
{
- int num_ev = 0, err = 0;
+ int num_ev = 0, err, result = 0;
struct snd_seq_client *dest_client;
struct snd_seq_client_port *port;
@@ -716,14 +728,18 @@ static int port_broadcast_event(struct snd_seq_client *client,
err = snd_seq_deliver_single_event(NULL, event,
SNDRV_SEQ_FILTER_BROADCAST,
atomic, hop);
- if (err < 0)
- break;
+ if (err < 0) {
+ /* save first error that occurs and continue */
+ if (!result)
+ result = err;
+ continue;
+ }
num_ev++;
}
read_unlock(&dest_client->ports_lock);
snd_seq_client_unlock(dest_client);
event->dest.port = SNDRV_SEQ_ADDRESS_BROADCAST; /* restore */
- return (err < 0) ? err : num_ev;
+ return (result < 0) ? result : num_ev;
}
/*
@@ -733,7 +749,7 @@ static int port_broadcast_event(struct snd_seq_client *client,
static int broadcast_event(struct snd_seq_client *client,
struct snd_seq_event *event, int atomic, int hop)
{
- int err = 0, num_ev = 0;
+ int err, result = 0, num_ev = 0;
int dest;
struct snd_seq_addr addr;
@@ -752,12 +768,16 @@ static int broadcast_event(struct snd_seq_client *client,
err = snd_seq_deliver_single_event(NULL, event,
SNDRV_SEQ_FILTER_BROADCAST,
atomic, hop);
- if (err < 0)
- break;
+ if (err < 0) {
+ /* save first error that occurs and continue */
+ if (!result)
+ result = err;
+ continue;
+ }
num_ev += err;
}
event->dest = addr; /* restore */
- return (err < 0) ? err : num_ev;
+ return (result < 0) ? result : num_ev;
}
@@ -765,7 +785,7 @@ static int broadcast_event(struct snd_seq_client *client,
static int multicast_event(struct snd_seq_client *client, struct snd_seq_event *event,
int atomic, int hop)
{
- snd_printd("seq: multicast not supported yet.\n");
+ pr_debug("ALSA: seq: multicast not supported yet.\n");
return 0; /* ignored */
}
#endif /* SUPPORT_BROADCAST */
@@ -786,7 +806,7 @@ static int snd_seq_deliver_event(struct snd_seq_client *client, struct snd_seq_e
hop++;
if (hop >= SNDRV_SEQ_MAX_HOPS) {
- snd_printd("too long delivery path (%d:%d->%d:%d)\n",
+ pr_debug("ALSA: seq: too long delivery path (%d:%d->%d:%d)\n",
event->source.client, event->source.port,
event->dest.client, event->dest.port);
return -EMLINK;
@@ -825,7 +845,8 @@ int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop)
struct snd_seq_client *client;
int result;
- snd_assert(cell != NULL, return -EINVAL);
+ if (snd_BUG_ON(!cell))
+ return -EINVAL;
client = snd_seq_client_use_ptr(cell->event.source.client);
if (client == NULL) {
@@ -994,7 +1015,8 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
return -ENXIO;
/* check client structures are in place */
- snd_assert(client != NULL, return -ENXIO);
+ if (snd_BUG_ON(!client))
+ return -ENXIO;
if (!client->accept_output || client->pool == NULL)
return -ENXIO;
@@ -1043,7 +1065,7 @@ static ssize_t snd_seq_write(struct file *file, const char __user *buf,
} else {
#ifdef CONFIG_COMPAT
if (client->convert32 && snd_seq_ev_is_varusr(&event)) {
- void *ptr = compat_ptr(event.data.raw32.d[1]);
+ void *ptr = (void __force *)compat_ptr(event.data.raw32.d[1]);
event.data.ext.ptr = ptr;
}
#endif
@@ -1076,7 +1098,8 @@ static unsigned int snd_seq_poll(struct file *file, poll_table * wait)
unsigned int mask = 0;
/* check client structures are in place */
- snd_assert(client != NULL, return -ENXIO);
+ if (snd_BUG_ON(!client))
+ return -ENXIO;
if ((snd_seq_file_flags(file) & SNDRV_SEQ_LFLG_INPUT) &&
client->data.user.fifo) {
@@ -2185,7 +2208,7 @@ static int snd_seq_do_ioctl(struct snd_seq_client *client, unsigned int cmd,
if (p->cmd == cmd)
return p->func(client, arg);
}
- snd_printd("seq unknown ioctl() 0x%x (type='%c', number=0x%2x)\n",
+ pr_debug("ALSA: seq unknown ioctl() 0x%x (type='%c', number=0x%02x)\n",
cmd, _IOC_TYPE(cmd), _IOC_NR(cmd));
return -ENOTTY;
}
@@ -2195,7 +2218,8 @@ static long snd_seq_ioctl(struct file *file, unsigned int cmd, unsigned long arg
{
struct snd_seq_client *client = file->private_data;
- snd_assert(client != NULL, return -ENXIO);
+ if (snd_BUG_ON(!client))
+ return -ENXIO;
return snd_seq_do_ioctl(client, cmd, (void __user *) arg);
}
@@ -2216,7 +2240,8 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index,
struct snd_seq_client *client;
va_list args;
- snd_assert(! in_interrupt(), return -EBUSY);
+ if (snd_BUG_ON(in_interrupt()))
+ return -EBUSY;
if (card && client_index >= SNDRV_SEQ_CLIENTS_PER_CARD)
return -EINVAL;
@@ -2265,7 +2290,8 @@ int snd_seq_delete_kernel_client(int client)
{
struct snd_seq_client *ptr;
- snd_assert(! in_interrupt(), return -EBUSY);
+ if (snd_BUG_ON(in_interrupt()))
+ return -EBUSY;
ptr = clientptr(client);
if (ptr == NULL)
@@ -2288,7 +2314,8 @@ static int kernel_client_enqueue(int client, struct snd_seq_event *ev,
struct snd_seq_client *cptr;
int result;
- snd_assert(ev != NULL, return -EINVAL);
+ if (snd_BUG_ON(!ev))
+ return -EINVAL;
if (ev->type == SNDRV_SEQ_EVENT_NONE)
return 0; /* ignore this */
@@ -2354,7 +2381,8 @@ int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event * ev,
struct snd_seq_client *cptr;
int result;
- snd_assert(ev != NULL, return -EINVAL);
+ if (snd_BUG_ON(!ev))
+ return -EINVAL;
/* fill in client number */
ev->queue = SNDRV_SEQ_QUEUE_DIRECT;
@@ -2392,7 +2420,7 @@ int snd_seq_kernel_client_ctl(int clientid, unsigned int cmd, void *arg)
if (client == NULL)
return -ENXIO;
fs = snd_enter_user();
- result = snd_seq_do_ioctl(client, cmd, (void __user *)arg);
+ result = snd_seq_do_ioctl(client, cmd, (void __force __user *)arg);
snd_leave_user(fs);
return result;
}
@@ -2482,9 +2510,6 @@ static void snd_seq_info_dump_ports(struct snd_info_buffer *buffer,
}
-void snd_seq_info_pool(struct snd_info_buffer *buffer,
- struct snd_seq_pool *pool, char *space);
-
/* exported to seq_info.c */
void snd_seq_info_clients_read(struct snd_info_entry *entry,
struct snd_info_buffer *buffer)
@@ -2540,6 +2565,7 @@ static const struct file_operations snd_seq_f_ops =
.write = snd_seq_write,
.open = snd_seq_open,
.release = snd_seq_release,
+ .llseek = no_llseek,
.poll = snd_seq_poll,
.unlocked_ioctl = snd_seq_ioctl,
.compat_ioctl = snd_seq_ioctl_compat,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 07:13:07 +0000