diff options
Diffstat (limited to '')
-rw-r--r-- | sound/core/seq/oss/seq_oss.c | 37 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_init.c | 15 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_midi.c | 39 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_rw.c | 3 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_synth.c | 18 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_timer.c | 2 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_timer.h | 10 | ||||
-rw-r--r-- | sound/core/seq/oss/seq_oss_writeq.c | 3 | ||||
-rw-r--r-- | sound/core/seq/seq_clientmgr.c | 66 | ||||
-rw-r--r-- | sound/core/seq/seq_dummy.c | 11 | ||||
-rw-r--r-- | sound/core/seq/seq_fifo.c | 3 | ||||
-rw-r--r-- | sound/core/seq/seq_memory.c | 8 | ||||
-rw-r--r-- | sound/core/seq/seq_midi.c | 27 | ||||
-rw-r--r-- | sound/core/seq/seq_midi_emul.c | 2 | ||||
-rw-r--r-- | sound/core/seq/seq_ports.c | 47 | ||||
-rw-r--r-- | sound/core/seq/seq_queue.c | 62 | ||||
-rw-r--r-- | sound/core/seq/seq_queue.h | 11 | ||||
-rw-r--r-- | sound/core/seq/seq_timer.c | 10 | ||||
-rw-r--r-- | sound/core/seq/seq_virmidi.c | 20 | ||||
-rw-r--r-- | sound/core/seq_device.c | 23 |
20 files changed, 247 insertions, 170 deletions
diff --git a/sound/core/seq/oss/seq_oss.c b/sound/core/seq/oss/seq_oss.c index 17f913657304..77c1214acd90 100644 --- a/sound/core/seq/oss/seq_oss.c +++ b/sound/core/seq/oss/seq_oss.c @@ -67,13 +67,16 @@ static int __init alsa_seq_oss_init(void) { int rc; - if ((rc = register_device()) < 0) + rc = register_device(); + if (rc < 0) goto error; - if ((rc = register_proc()) < 0) { + rc = register_proc(); + if (rc < 0) { unregister_device(); goto error; } - if ((rc = snd_seq_oss_create_client()) < 0) { + rc = snd_seq_oss_create_client(); + if (rc < 0) { unregister_proc(); unregister_device(); goto error; @@ -133,7 +136,8 @@ odev_release(struct inode *inode, struct file *file) { struct seq_oss_devinfo *dp; - if ((dp = file->private_data) == NULL) + dp = file->private_data; + if (!dp) return 0; mutex_lock(®ister_mutex); @@ -168,10 +172,19 @@ static long odev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { struct seq_oss_devinfo *dp; + long rc; + dp = file->private_data; if (snd_BUG_ON(!dp)) return -ENXIO; - return snd_seq_oss_ioctl(dp, cmd, arg); + + if (cmd != SNDCTL_SEQ_SYNC && + mutex_lock_interruptible(®ister_mutex)) + return -ERESTARTSYS; + rc = snd_seq_oss_ioctl(dp, cmd, arg); + if (cmd != SNDCTL_SEQ_SYNC) + mutex_unlock(®ister_mutex); + return rc; } #ifdef CONFIG_COMPAT @@ -217,16 +230,18 @@ register_device(void) int rc; mutex_lock(®ister_mutex); - if ((rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_SEQUENCER, - NULL, 0, - &seq_oss_f_ops, NULL)) < 0) { + rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_SEQUENCER, + NULL, 0, + &seq_oss_f_ops, NULL); + if (rc < 0) { pr_err("ALSA: seq_oss: can't register device seq\n"); mutex_unlock(®ister_mutex); return rc; } - if ((rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MUSIC, - NULL, 0, - &seq_oss_f_ops, NULL)) < 0) { + rc = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MUSIC, + NULL, 0, + &seq_oss_f_ops, NULL); + if (rc < 0) { pr_err("ALSA: seq_oss: can't register device music\n"); snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_SEQUENCER, NULL, 0); mutex_unlock(®ister_mutex); diff --git a/sound/core/seq/oss/seq_oss_init.c b/sound/core/seq/oss/seq_oss_init.c index 4534a154b8c8..42d4e7535a82 100644 --- a/sound/core/seq/oss/seq_oss_init.c +++ b/sound/core/seq/oss/seq_oss_init.c @@ -66,7 +66,7 @@ snd_seq_oss_create_client(void) struct snd_seq_port_info *port; struct snd_seq_port_callback port_callback; - port = kmalloc(sizeof(*port), GFP_KERNEL); + port = kzalloc(sizeof(*port), GFP_KERNEL); if (!port) { rc = -ENOMEM; goto __error; @@ -80,8 +80,7 @@ snd_seq_oss_create_client(void) system_client = rc; - /* create annoucement receiver port */ - memset(port, 0, sizeof(*port)); + /* create announcement receiver port */ strcpy(port->name, "Receiver"); port->addr.client = system_client; port->capability = SNDRV_SEQ_PORT_CAP_WRITE; /* receive only */ @@ -94,10 +93,10 @@ snd_seq_oss_create_client(void) port_callback.event_input = receive_announce; port->kernel = &port_callback; - call_ctl(SNDRV_SEQ_IOCTL_CREATE_PORT, port); - if ((system_port = port->addr.port) >= 0) { + if (call_ctl(SNDRV_SEQ_IOCTL_CREATE_PORT, port) >= 0) { struct snd_seq_port_subscribe subs; + system_port = port->addr.port; memset(&subs, 0, sizeof(subs)); subs.sender.client = SNDRV_SEQ_CLIENT_SYSTEM; subs.sender.port = SNDRV_SEQ_PORT_SYSTEM_ANNOUNCE; @@ -354,7 +353,8 @@ alloc_seq_queue(struct seq_oss_devinfo *dp) qinfo.owner = system_client; qinfo.locked = 1; strcpy(qinfo.name, "OSS Sequencer Emulation"); - if ((rc = call_ctl(SNDRV_SEQ_IOCTL_CREATE_QUEUE, &qinfo)) < 0) + rc = call_ctl(SNDRV_SEQ_IOCTL_CREATE_QUEUE, &qinfo); + if (rc < 0) return rc; dp->queue = qinfo.queue; return 0; @@ -485,7 +485,8 @@ snd_seq_oss_system_info_read(struct snd_info_buffer *buf) snd_iprintf(buf, "\nNumber of applications: %d\n", num_clients); for (i = 0; i < num_clients; i++) { snd_iprintf(buf, "\nApplication %d: ", i); - if ((dp = client_table[i]) == NULL) { + dp = client_table[i]; + if (!dp) { snd_iprintf(buf, "*empty*\n"); continue; } diff --git a/sound/core/seq/oss/seq_oss_midi.c b/sound/core/seq/oss/seq_oss_midi.c index 2ddfe2226651..07efb38f58ac 100644 --- a/sound/core/seq/oss/seq_oss_midi.c +++ b/sound/core/seq/oss/seq_oss_midi.c @@ -152,7 +152,8 @@ snd_seq_oss_midi_check_new_port(struct snd_seq_port_info *pinfo) /* * look for the identical slot */ - if ((mdev = find_slot(pinfo->addr.client, pinfo->addr.port)) != NULL) { + mdev = find_slot(pinfo->addr.client, pinfo->addr.port); + if (mdev) { /* already exists */ snd_use_lock_free(&mdev->use_lock); return 0; @@ -173,7 +174,7 @@ snd_seq_oss_midi_check_new_port(struct snd_seq_port_info *pinfo) snd_use_lock_init(&mdev->use_lock); /* copy and truncate the name of synth device */ - strlcpy(mdev->name, pinfo->name, sizeof(mdev->name)); + strscpy(mdev->name, pinfo->name, sizeof(mdev->name)); /* create MIDI coder */ if (snd_midi_event_new(MAX_MIDI_EVENT_BUF, &mdev->coder) < 0) { @@ -218,7 +219,8 @@ snd_seq_oss_midi_check_exit_port(int client, int port) unsigned long flags; int index; - if ((mdev = find_slot(client, port)) != NULL) { + mdev = find_slot(client, port); + if (mdev) { spin_lock_irqsave(®ister_lock, flags); midi_devs[mdev->seq_device] = NULL; spin_unlock_irqrestore(®ister_lock, flags); @@ -250,7 +252,8 @@ snd_seq_oss_midi_clear_all(void) spin_lock_irqsave(®ister_lock, flags); for (i = 0; i < max_midi_devs; i++) { - if ((mdev = midi_devs[i]) != NULL) { + mdev = midi_devs[i]; + if (mdev) { snd_midi_event_free(mdev->coder); kfree(mdev); midi_devs[i] = NULL; @@ -267,7 +270,9 @@ snd_seq_oss_midi_clear_all(void) void snd_seq_oss_midi_setup(struct seq_oss_devinfo *dp) { + spin_lock_irq(®ister_lock); dp->max_mididev = max_midi_devs; + spin_unlock_irq(®ister_lock); } /* @@ -318,7 +323,8 @@ snd_seq_oss_midi_open(struct seq_oss_devinfo *dp, int dev, int fmode) struct seq_oss_midi *mdev; struct snd_seq_port_subscribe subs; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; /* already used? */ @@ -384,7 +390,8 @@ snd_seq_oss_midi_close(struct seq_oss_devinfo *dp, int dev) struct seq_oss_midi *mdev; struct snd_seq_port_subscribe subs; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; if (! mdev->opened || mdev->devinfo != dp) { snd_use_lock_free(&mdev->use_lock); @@ -421,7 +428,8 @@ snd_seq_oss_midi_filemode(struct seq_oss_devinfo *dp, int dev) struct seq_oss_midi *mdev; int mode; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return 0; mode = 0; @@ -443,7 +451,8 @@ snd_seq_oss_midi_reset(struct seq_oss_devinfo *dp, int dev) { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return; if (! mdev->opened) { snd_use_lock_free(&mdev->use_lock); @@ -491,7 +500,8 @@ snd_seq_oss_midi_get_addr(struct seq_oss_devinfo *dp, int dev, struct snd_seq_ad { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return; addr->client = mdev->client; addr->port = mdev->port; @@ -511,7 +521,8 @@ snd_seq_oss_midi_input(struct snd_seq_event *ev, int direct, void *private_data) if (dp->readq == NULL) return 0; - if ((mdev = find_slot(ev->source.client, ev->source.port)) == NULL) + mdev = find_slot(ev->source.client, ev->source.port); + if (!mdev) return 0; if (! (mdev->opened & PERM_READ)) { snd_use_lock_free(&mdev->use_lock); @@ -623,7 +634,8 @@ snd_seq_oss_midi_putc(struct seq_oss_devinfo *dp, int dev, unsigned char c, stru { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENODEV; if (snd_midi_event_encode_byte(mdev->coder, c, ev)) { snd_seq_oss_fill_addr(dp, ev, mdev->client, mdev->port); @@ -642,12 +654,13 @@ snd_seq_oss_midi_make_info(struct seq_oss_devinfo *dp, int dev, struct midi_info { struct seq_oss_midi *mdev; - if ((mdev = get_mididev(dp, dev)) == NULL) + mdev = get_mididev(dp, dev); + if (!mdev) return -ENXIO; inf->device = dev; inf->dev_type = 0; /* FIXME: ?? */ inf->capabilities = 0; /* FIXME: ?? */ - strlcpy(inf->name, mdev->name, sizeof(inf->name)); + strscpy(inf->name, mdev->name, sizeof(inf->name)); snd_use_lock_free(&mdev->use_lock); return 0; } diff --git a/sound/core/seq/oss/seq_oss_rw.c b/sound/core/seq/oss/seq_oss_rw.c index 537d5f423e20..8a142fd54a19 100644 --- a/sound/core/seq/oss/seq_oss_rw.c +++ b/sound/core/seq/oss/seq_oss_rw.c @@ -132,7 +132,8 @@ snd_seq_oss_write(struct seq_oss_devinfo *dp, const char __user *buf, int count, } /* insert queue */ - if ((err = insert_queue(dp, &rec, opt)) < 0) + err = insert_queue(dp, &rec, opt); + if (err < 0) break; result += ev_size; diff --git a/sound/core/seq/oss/seq_oss_synth.c b/sound/core/seq/oss/seq_oss_synth.c index 11554d0412f0..e3394919daa0 100644 --- a/sound/core/seq/oss/seq_oss_synth.c +++ b/sound/core/seq/oss/seq_oss_synth.c @@ -107,7 +107,7 @@ snd_seq_oss_synth_probe(struct device *_dev) snd_use_lock_init(&rec->use_lock); /* copy and truncate the name of synth device */ - strlcpy(rec->name, dev->name, sizeof(rec->name)); + strscpy(rec->name, dev->name, sizeof(rec->name)); /* registration */ spin_lock_irqsave(®ister_lock, flags); @@ -451,7 +451,8 @@ snd_seq_oss_synth_load_patch(struct seq_oss_devinfo *dp, int dev, int fmt, if (info->is_midi) return 0; - if ((rec = get_synthdev(dp, dev)) == NULL) + rec = get_synthdev(dp, dev); + if (!rec) return -ENXIO; if (rec->oper.load_patch == NULL) @@ -569,7 +570,8 @@ snd_seq_oss_synth_ioctl(struct seq_oss_devinfo *dp, int dev, unsigned int cmd, u info = get_synthinfo_nospec(dp, dev); if (!info || info->is_midi) return -ENXIO; - if ((rec = get_synthdev(dp, dev)) == NULL) + rec = get_synthdev(dp, dev); + if (!rec) return -ENXIO; if (rec->oper.ioctl == NULL) rc = -ENXIO; @@ -611,20 +613,22 @@ snd_seq_oss_synth_make_info(struct seq_oss_devinfo *dp, int dev, struct synth_in if (info->is_midi) { struct midi_info minf; - snd_seq_oss_midi_make_info(dp, info->midi_mapped, &minf); + if (snd_seq_oss_midi_make_info(dp, info->midi_mapped, &minf)) + return -ENXIO; inf->synth_type = SYNTH_TYPE_MIDI; inf->synth_subtype = 0; inf->nr_voices = 16; inf->device = dev; - strlcpy(inf->name, minf.name, sizeof(inf->name)); + strscpy(inf->name, minf.name, sizeof(inf->name)); } else { - if ((rec = get_synthdev(dp, dev)) == NULL) + rec = get_synthdev(dp, dev); + if (!rec) return -ENXIO; inf->synth_type = rec->synth_type; inf->synth_subtype = rec->synth_subtype; inf->nr_voices = rec->nr_voices; inf->device = dev; - strlcpy(inf->name, rec->name, sizeof(inf->name)); + strscpy(inf->name, rec->name, sizeof(inf->name)); snd_use_lock_free(&rec->use_lock); } return 0; diff --git a/sound/core/seq/oss/seq_oss_timer.c b/sound/core/seq/oss/seq_oss_timer.c index a35d429e4c27..f9f57232a83f 100644 --- a/sound/core/seq/oss/seq_oss_timer.c +++ b/sound/core/seq/oss/seq_oss_timer.c @@ -79,7 +79,7 @@ snd_seq_oss_process_timer_event(struct seq_oss_timer *rec, union evrec *ev) case TMR_WAIT_REL: parm += rec->cur_tick; rec->realtime = 0; - /* fall through */ + fallthrough; case TMR_WAIT_ABS: if (parm == 0) { rec->realtime = 1; diff --git a/sound/core/seq/oss/seq_oss_timer.h b/sound/core/seq/oss/seq_oss_timer.h index 2d86125b5d0f..dee190b4ec6b 100644 --- a/sound/core/seq/oss/seq_oss_timer.h +++ b/sound/core/seq/oss/seq_oss_timer.h @@ -44,14 +44,4 @@ snd_seq_oss_timer_cur_tick(struct seq_oss_timer *timer) return timer->cur_tick; } - -/* - * is realtime event? - */ -static inline int -snd_seq_oss_timer_is_realtime(struct seq_oss_timer *timer) -{ - return timer->realtime; -} - #endif diff --git a/sound/core/seq/oss/seq_oss_writeq.c b/sound/core/seq/oss/seq_oss_writeq.c index 0a02a59103b4..3e3209ce53b1 100644 --- a/sound/core/seq/oss/seq_oss_writeq.c +++ b/sound/core/seq/oss/seq_oss_writeq.c @@ -27,7 +27,8 @@ snd_seq_oss_writeq_new(struct seq_oss_devinfo *dp, int maxlen) struct seq_oss_writeq *q; struct snd_seq_client_pool pool; - if ((q = kzalloc(sizeof(*q), GFP_KERNEL)) == NULL) + q = kzalloc(sizeof(*q), GFP_KERNEL); + if (!q) return NULL; q->dp = dp; q->maxlen = maxlen; diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index cc93157fa950..2d707afa1ef1 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -121,13 +121,13 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid) spin_unlock_irqrestore(&clients_lock, flags); #ifdef CONFIG_MODULES if (!in_interrupt()) { - static char client_requested[SNDRV_SEQ_GLOBAL_CLIENTS]; - static char card_requested[SNDRV_CARDS]; + static DECLARE_BITMAP(client_requested, SNDRV_SEQ_GLOBAL_CLIENTS); + static DECLARE_BITMAP(card_requested, SNDRV_CARDS); + if (clientid < SNDRV_SEQ_GLOBAL_CLIENTS) { int idx; - if (!client_requested[clientid]) { - client_requested[clientid] = 1; + if (!test_and_set_bit(clientid, client_requested)) { for (idx = 0; idx < 15; idx++) { if (seq_client_load[idx] < 0) break; @@ -142,10 +142,8 @@ struct snd_seq_client *snd_seq_client_use_ptr(int clientid) int card = (clientid - SNDRV_SEQ_GLOBAL_CLIENTS) / SNDRV_SEQ_CLIENTS_PER_CARD; if (card < snd_ecards_limit) { - if (! card_requested[card]) { - card_requested[card] = 1; + if (!test_and_set_bit(card, card_requested)) snd_request_card(card); - } snd_seq_device_load_drivers(); } } @@ -279,7 +277,6 @@ static int seq_free_client1(struct snd_seq_client *client) snd_seq_delete_all_ports(client); snd_seq_queue_client_leave(client->number); snd_use_lock_sync(&client->use_lock); - snd_seq_queue_client_termination(client->number); if (client->pool) snd_seq_pool_delete(&client->pool); spin_lock_irq(&clients_lock); @@ -417,7 +414,10 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count, if (snd_BUG_ON(!client)) return -ENXIO; - if (!client->accept_input || (fifo = client->data.user.fifo) == NULL) + if (!client->accept_input) + return -ENXIO; + fifo = client->data.user.fifo; + if (!fifo) return -ENXIO; if (atomic_read(&fifo->overflow) > 0) { @@ -436,9 +436,9 @@ static ssize_t snd_seq_read(struct file *file, char __user *buf, size_t count, int nonblock; nonblock = (file->f_flags & O_NONBLOCK) || result > 0; - if ((err = snd_seq_fifo_cell_out(fifo, &cell, nonblock)) < 0) { + err = snd_seq_fifo_cell_out(fifo, &cell, nonblock); + if (err < 0) break; - } if (snd_seq_ev_is_variable(&cell->event)) { struct snd_seq_event tmpev; tmpev = cell->event; @@ -971,7 +971,8 @@ static int snd_seq_client_enqueue_event(struct snd_seq_client *client, return err; /* we got a cell. enqueue it. */ - if ((err = snd_seq_enqueue_event(cell, atomic, hop)) < 0) { + err = snd_seq_enqueue_event(cell, atomic, hop); + if (err < 0) { snd_seq_cell_free(cell); return err; } @@ -1313,7 +1314,8 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client, void *arg) return -EINVAL; } if (client->type == KERNEL_CLIENT) { - if ((callback = info->kernel) != NULL) { + callback = info->kernel; + if (callback) { if (callback->owner) port->owner = callback->owner; port->private_data = callback->private_data; @@ -1467,13 +1469,17 @@ static int snd_seq_ioctl_subscribe_port(struct snd_seq_client *client, struct snd_seq_client *receiver = NULL, *sender = NULL; struct snd_seq_client_port *sport = NULL, *dport = NULL; - if ((receiver = snd_seq_client_use_ptr(subs->dest.client)) == NULL) + receiver = snd_seq_client_use_ptr(subs->dest.client); + if (!receiver) goto __end; - if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL) + sender = snd_seq_client_use_ptr(subs->sender.client); + if (!sender) goto __end; - if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL) + sport = snd_seq_port_use_ptr(sender, subs->sender.port); + if (!sport) goto __end; - if ((dport = snd_seq_port_use_ptr(receiver, subs->dest.port)) == NULL) + dport = snd_seq_port_use_ptr(receiver, subs->dest.port); + if (!dport) goto __end; result = check_subscription_permission(client, sport, dport, subs); @@ -1509,13 +1515,17 @@ static int snd_seq_ioctl_unsubscribe_port(struct snd_seq_client *client, struct snd_seq_client *receiver = NULL, *sender = NULL; struct snd_seq_client_port *sport = NULL, *dport = NULL; - if ((receiver = snd_seq_client_use_ptr(subs->dest.client)) == NULL) + receiver = snd_seq_client_use_ptr(subs->dest.client); + if (!receiver) goto __end; - if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL) + sender = snd_seq_client_use_ptr(subs->sender.client); + if (!sender) goto __end; - if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL) + sport = snd_seq_port_use_ptr(sender, subs->sender.port); + if (!sport) goto __end; - if ((dport = snd_seq_port_use_ptr(receiver, subs->dest.port)) == NULL) + dport = snd_seq_port_use_ptr(receiver, subs->dest.port); + if (!dport) goto __end; result = check_subscription_permission(client, sport, dport, subs); @@ -1585,7 +1595,7 @@ static int snd_seq_ioctl_get_queue_info(struct snd_seq_client *client, info->queue = q->queue; info->owner = q->owner; info->locked = q->locked; - strlcpy(info->name, q->name, sizeof(info->name)); + strscpy(info->name, q->name, sizeof(info->name)); queuefree(q); return 0; @@ -1927,9 +1937,11 @@ static int snd_seq_ioctl_get_subscription(struct snd_seq_client *client, struct snd_seq_client_port *sport = NULL; result = -EINVAL; - if ((sender = snd_seq_client_use_ptr(subs->sender.client)) == NULL) + sender = snd_seq_client_use_ptr(subs->sender.client); + if (!sender) goto __end; - if ((sport = snd_seq_port_use_ptr(sender, subs->sender.port)) == NULL) + sport = snd_seq_port_use_ptr(sender, subs->sender.port); + if (!sport) goto __end; result = snd_seq_port_get_subscription(&sport->c_src, &subs->dest, subs); @@ -1956,9 +1968,11 @@ static int snd_seq_ioctl_query_subs(struct snd_seq_client *client, void *arg) struct list_head *p; int i; - if ((cptr = snd_seq_client_use_ptr(subs->root.client)) == NULL) + cptr = snd_seq_client_use_ptr(subs->root.client); + if (!cptr) goto __end; - if ((port = snd_seq_port_use_ptr(cptr, subs->root.port)) == NULL) + port = snd_seq_port_use_ptr(cptr, subs->root.port); + if (!port) goto __end; switch (subs->type) { diff --git a/sound/core/seq/seq_dummy.c b/sound/core/seq/seq_dummy.c index cd5a4cad8881..8c18d8c4177e 100644 --- a/sound/core/seq/seq_dummy.c +++ b/sound/core/seq/seq_dummy.c @@ -20,15 +20,15 @@ are redirected to output port immediately. The routing can be done via aconnect program in alsa-utils. - Each client has a static client number 62 (= SNDRV_SEQ_CLIENT_DUMMY). + Each client has a static client number 14 (= SNDRV_SEQ_CLIENT_DUMMY). If you want to auto-load this module, you may add the following alias in your /etc/conf.modules file. - alias snd-seq-client-62 snd-seq-dummy + alias snd-seq-client-14 snd-seq-dummy - The module is loaded on demand for client 62, or /proc/asound/seq/ + The module is loaded on demand for client 14, or /proc/asound/seq/ is accessed. If you don't need this module to be loaded, alias - snd-seq-client-62 as "off". This will help modprobe. + snd-seq-client-14 as "off". This will help modprobe. The number of ports to be created can be specified via the module parameter "ports". For example, to create four ports, add the @@ -109,7 +109,8 @@ create_port(int idx, int type) struct snd_seq_port_callback pcb; struct snd_seq_dummy_port *rec; - if ((rec = kzalloc(sizeof(*rec), GFP_KERNEL)) == NULL) + rec = kzalloc(sizeof(*rec), GFP_KERNEL); + if (!rec) return NULL; rec->client = my_client; diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c index eaaa8b5830bb..f8e02e98709a 100644 --- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -143,7 +143,8 @@ static struct snd_seq_event_cell *fifo_cell_out(struct snd_seq_fifo *f) { struct snd_seq_event_cell *cell; - if ((cell = f->head) != NULL) { + cell = f->head; + if (cell) { f->head = cell->next; /* reset tail if this was the last element */ diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c index 65db1a7c77b7..b7aee23fc387 100644 --- a/sound/core/seq/seq_memory.c +++ b/sound/core/seq/seq_memory.c @@ -69,7 +69,8 @@ int snd_seq_dump_var_event(const struct snd_seq_event *event, int len, err; struct snd_seq_event_cell *cell; - if ((len = get_var_len(event)) <= 0) + len = get_var_len(event); + if (len <= 0) return len; if (event->data.ext.len & SNDRV_SEQ_EXT_USRPTR) { @@ -133,7 +134,8 @@ int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char int len, newlen; int err; - if ((len = get_var_len(event)) < 0) + len = get_var_len(event); + if (len < 0) return len; newlen = len; if (size_aligned > 0) @@ -290,7 +292,7 @@ int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event, extlen = 0; if (snd_seq_ev_is_variable(event)) { extlen = event->data.ext.len & ~SNDRV_SEQ_EXT_MASK; - ncells = (extlen + sizeof(struct snd_seq_event) - 1) / sizeof(struct snd_seq_event); + ncells = DIV_ROUND_UP(extlen, sizeof(struct snd_seq_event)); } if (ncells >= pool->total_elements) return -ENOMEM; diff --git a/sound/core/seq/seq_midi.c b/sound/core/seq/seq_midi.c index 6825940ea2cf..4589aac09154 100644 --- a/sound/core/seq/seq_midi.c +++ b/sound/core/seq/seq_midi.c @@ -101,7 +101,8 @@ static int dump_midi(struct snd_rawmidi_substream *substream, const char *buf, i if (snd_BUG_ON(!substream || !buf)) return -EINVAL; runtime = substream->runtime; - if ((tmp = runtime->avail) < count) { + tmp = runtime->avail; + if (tmp < count) { if (printk_ratelimit()) pr_err("ALSA: seq_midi: MIDI output buffer overrun\n"); return -ENOMEM; @@ -167,10 +168,11 @@ static int midisynth_subscribe(void *private_data, struct snd_seq_port_subscribe struct snd_rawmidi_params params; /* open midi port */ - if ((err = snd_rawmidi_kernel_open(msynth->card, msynth->device, - msynth->subdevice, - SNDRV_RAWMIDI_LFLG_INPUT, - &msynth->input_rfile)) < 0) { + err = snd_rawmidi_kernel_open(msynth->card, msynth->device, + msynth->subdevice, + SNDRV_RAWMIDI_LFLG_INPUT, + &msynth->input_rfile); + if (err < 0) { pr_debug("ALSA: seq_midi: midi input open failed!!!\n"); return err; } @@ -178,7 +180,8 @@ static int midisynth_subscribe(void *private_data, struct snd_seq_port_subscribe memset(¶ms, 0, sizeof(params)); params.avail_min = 1; params.buffer_size = input_buffer_size; - if ((err = snd_rawmidi_input_params(msynth->input_rfile.input, ¶ms)) < 0) { + err = snd_rawmidi_input_params(msynth->input_rfile.input, ¶ms); + if (err < 0) { snd_rawmidi_kernel_release(&msynth->input_rfile); return err; } @@ -209,10 +212,11 @@ static int midisynth_use(void *private_data, struct snd_seq_port_subscribe *info struct snd_rawmidi_params params; /* open midi port */ - if ((err = snd_rawmidi_kernel_open(msynth->card, msynth->device, - msynth->subdevice, - SNDRV_RAWMIDI_LFLG_OUTPUT, - &msynth->output_rfile)) < 0) { + err = snd_rawmidi_kernel_open(msynth->card, msynth->device, + msynth->subdevice, + SNDRV_RAWMIDI_LFLG_OUTPUT, + &msynth->output_rfile); + if (err < 0) { pr_debug("ALSA: seq_midi: midi output open failed!!!\n"); return err; } @@ -220,7 +224,8 @@ static int midisynth_use(void *private_data, struct snd_seq_port_subscribe *info params.avail_min = 1; params.buffer_size = output_buffer_size; params.no_active_sensing = 1; - if ((err = snd_rawmidi_output_params(msynth->output_rfile.output, ¶ms)) < 0) { + err = snd_rawmidi_output_params(msynth->output_rfile.output, ¶ms); + if (err < 0) { snd_rawmidi_kernel_release(&msynth->output_rfile); return err; } diff --git a/sound/core/seq/seq_midi_emul.c b/sound/core/seq/seq_midi_emul.c index 198f285594e3..81d2ef5e5811 100644 --- a/sound/core/seq/seq_midi_emul.c +++ b/sound/core/seq/seq_midi_emul.c @@ -309,7 +309,7 @@ do_control(const struct snd_midi_op *ops, void *drv, break; case MIDI_CTL_MSB_DATA_ENTRY: chan->control[MIDI_CTL_LSB_DATA_ENTRY] = 0; - /* fall through */ + fallthrough; case MIDI_CTL_LSB_DATA_ENTRY: if (chan->param_type == SNDRV_MIDI_PARAM_TYPE_REGISTERED) rpn(ops, drv, chan, chset); diff --git a/sound/core/seq/seq_ports.c b/sound/core/seq/seq_ports.c index 83be6b982a87..25fcf5a2c71c 100644 --- a/sound/core/seq/seq_ports.c +++ b/sound/core/seq/seq_ports.c @@ -139,7 +139,7 @@ struct snd_seq_client_port *snd_seq_create_port(struct snd_seq_client *client, port_subs_info_init(&new_port->c_dest); snd_use_lock_use(&new_port->use_lock); - num = port >= 0 ? port : 0; + num = max(port, 0); mutex_lock(&client->ports_mutex); write_lock_irq(&client->ports_lock); list_for_each_entry(p, &client->ports_list_head, list) { @@ -327,7 +327,7 @@ int snd_seq_set_port_info(struct snd_seq_client_port * port, /* set port name */ if (info->name[0]) - strlcpy(port->name, info->name, sizeof(port->name)); + strscpy(port->name, info->name, sizeof(port->name)); /* set capabilities */ port->capability = info->capability; @@ -356,7 +356,7 @@ int snd_seq_get_port_info(struct snd_seq_client_port * port, return -EINVAL; /* get port name */ - strlcpy(info->name, port->name, sizeof(info->name)); + strscpy(info->name, port->name, sizeof(info->name)); /* get capabilities */ info->capability = port->capability; @@ -514,10 +514,11 @@ static int check_and_subscribe_port(struct snd_seq_client *client, return err; } -static void delete_and_unsubscribe_port(struct snd_seq_client *client, - struct snd_seq_client_port *port, - struct snd_seq_subscribers *subs, - bool is_src, bool ack) +/* called with grp->list_mutex held */ +static void __delete_and_unsubscribe_port(struct snd_seq_client *client, + struct snd_seq_client_port *port, + struct snd_seq_subscribers *subs, + bool is_src, bool ack) { struct snd_seq_port_subs_info *grp; struct list_head *list; @@ -525,7 +526,6 @@ static void delete_and_unsubscribe_port(struct snd_seq_client *client, grp = is_src ? &port->c_src : &port->c_dest; list = is_src ? &subs->src_list : &subs->dest_list; - down_write(&grp->list_mutex); write_lock_irq(&grp->list_lock); empty = list_empty(list); if (!empty) @@ -535,6 +535,18 @@ static void delete_and_unsubscribe_port(struct snd_seq_client *client, if (!empty) unsubscribe_port(client, port, grp, &subs->info, ack); +} + +static void delete_and_unsubscribe_port(struct snd_seq_client *client, + struct snd_seq_client_port *port, + struct snd_seq_subscribers *subs, + bool is_src, bool ack) +{ + struct snd_seq_port_subs_info *grp; + + grp = is_src ? &port->c_src : &port->c_dest; + down_write(&grp->list_mutex); + __delete_and_unsubscribe_port(client, port, subs, is_src, ack); up_write(&grp->list_mutex); } @@ -590,27 +602,30 @@ int snd_seq_port_disconnect(struct snd_seq_client *connector, struct snd_seq_client_port *dest_port, struct snd_seq_port_subscribe *info) { - 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; - down_write(&src->list_mutex); + /* always start from deleting the dest port for avoiding concurrent + * deletions + */ + down_write(&dest->list_mutex); /* look for the connection */ - list_for_each_entry(subs, &src->list_head, src_list) { + list_for_each_entry(subs, &dest->list_head, dest_list) { if (match_subs_info(info, &subs->info)) { - atomic_dec(&subs->ref_count); /* mark as not ready */ + __delete_and_unsubscribe_port(dest_client, dest_port, + subs, false, + connector->number != dest_client->number); err = 0; break; } } - up_write(&src->list_mutex); + up_write(&dest->list_mutex); if (err < 0) return err; delete_and_unsubscribe_port(src_client, src_port, subs, true, connector->number != src_client->number); - delete_and_unsubscribe_port(dest_client, dest_port, subs, false, - connector->number != dest_client->number); kfree(subs); return 0; } @@ -654,7 +669,7 @@ int snd_seq_event_port_attach(int client, /* Set up the port */ memset(&portinfo, 0, sizeof(portinfo)); portinfo.addr.client = client; - strlcpy(portinfo.name, portname ? portname : "Unnamed port", + strscpy(portinfo.name, portname ? portname : "Unnamed port", sizeof(portinfo.name)); portinfo.capability = cap; diff --git a/sound/core/seq/seq_queue.c b/sound/core/seq/seq_queue.c index 71a6ea62c3be..bc933104c3ee 100644 --- a/sound/core/seq/seq_queue.c +++ b/sound/core/seq/seq_queue.c @@ -222,7 +222,8 @@ struct snd_seq_queue *snd_seq_queue_find_name(char *name) struct snd_seq_queue *q; for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) != NULL) { + q = queueptr(i); + if (q) { if (strncmp(q->name, name, sizeof(q->name)) == 0) return q; queuefree(q); @@ -234,12 +235,15 @@ struct snd_seq_queue *snd_seq_queue_find_name(char *name) /* -------------------------------------------------------- */ +#define MAX_CELL_PROCESSES_IN_QUEUE 1000 + void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) { unsigned long flags; struct snd_seq_event_cell *cell; snd_seq_tick_time_t cur_tick; snd_seq_real_time_t cur_time; + int processed = 0; if (q == NULL) return; @@ -262,6 +266,8 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) if (!cell) break; snd_seq_dispatch_event(cell, atomic, hop); + if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE) + goto out; /* the rest processed at the next batch */ } /* Process time queue... */ @@ -271,14 +277,19 @@ void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop) if (!cell) break; snd_seq_dispatch_event(cell, atomic, hop); + if (++processed >= MAX_CELL_PROCESSES_IN_QUEUE) + goto out; /* the rest processed at the next batch */ } + out: /* free lock */ spin_lock_irqsave(&q->check_lock, flags); if (q->check_again) { q->check_again = 0; - spin_unlock_irqrestore(&q->check_lock, flags); - goto __again; + if (processed < MAX_CELL_PROCESSES_IN_QUEUE) { + spin_unlock_irqrestore(&q->check_lock, flags); + goto __again; + } } q->check_blocked = 0; spin_unlock_irqrestore(&q->check_lock, flags); @@ -432,7 +443,8 @@ int snd_seq_queue_timer_open(int queueid) if (queue == NULL) return -EINVAL; tmr = queue->timer; - if ((result = snd_seq_timer_open(queue)) < 0) { + result = snd_seq_timer_open(queue); + if (result < 0) { snd_seq_timer_defaults(tmr); result = snd_seq_timer_open(queue); } @@ -537,33 +549,6 @@ int snd_seq_queue_is_used(int queueid, int client) /*----------------------------------------------------------------*/ -/* notification that client has left the system - - * stop the timer on all queues owned by this client - */ -void snd_seq_queue_client_termination(int client) -{ - unsigned long flags; - int i; - struct snd_seq_queue *q; - bool matched; - - for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) == NULL) - continue; - spin_lock_irqsave(&q->owner_lock, flags); - matched = (q->owner == client); - if (matched) - q->klocked = 1; - spin_unlock_irqrestore(&q->owner_lock, flags); - if (matched) { - if (q->timer->running) - snd_seq_timer_stop(q->timer); - snd_seq_timer_reset(q->timer); - } - queuefree(q); - } -} - /* final stage notification - * remove cells for no longer exist client (for non-owned queue) * or delete this queue (for owned queue) @@ -575,7 +560,8 @@ void snd_seq_queue_client_leave(int client) /* delete own queues from queue list */ for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queue_list_remove(i, client)) != NULL) + q = queue_list_remove(i, client); + if (q) queue_delete(q); } @@ -583,7 +569,8 @@ void snd_seq_queue_client_leave(int client) * they are not owned by this client */ for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) == NULL) + q = queueptr(i); + if (!q) continue; if (test_bit(client, q->clients_bitmap)) { snd_seq_prioq_leave(q->tickq, client, 0); @@ -605,7 +592,8 @@ void snd_seq_queue_client_leave_cells(int client) struct snd_seq_queue *q; for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) == NULL) + q = queueptr(i); + if (!q) continue; snd_seq_prioq_leave(q->tickq, client, 0); snd_seq_prioq_leave(q->timeq, client, 0); @@ -620,7 +608,8 @@ void snd_seq_queue_remove_cells(int client, struct snd_seq_remove_events *info) struct snd_seq_queue *q; for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) == NULL) + q = queueptr(i); + if (!q) continue; if (test_bit(client, q->clients_bitmap) && (! (info->remove_mode & SNDRV_SEQ_REMOVE_DEST) || @@ -751,7 +740,8 @@ void snd_seq_info_queues_read(struct snd_info_entry *entry, int owner; for (i = 0; i < SNDRV_SEQ_MAX_QUEUES; i++) { - if ((q = queueptr(i)) == NULL) + q = queueptr(i); + if (!q) continue; tmr = q->timer; diff --git a/sound/core/seq/seq_queue.h b/sound/core/seq/seq_queue.h index 9254c8dbe5e3..c69105dc1a10 100644 --- a/sound/core/seq/seq_queue.h +++ b/sound/core/seq/seq_queue.h @@ -26,10 +26,10 @@ struct snd_seq_queue { struct snd_seq_timer *timer; /* time keeper for this queue */ int owner; /* client that 'owns' the timer */ - unsigned int locked:1, /* timer is only accesibble by owner if set */ - klocked:1, /* kernel lock (after START) */ - check_again:1, - check_blocked:1; + bool locked; /* timer is only accesibble by owner if set */ + bool klocked; /* kernel lock (after START) */ + bool check_again; /* concurrent access happened during check */ + bool check_blocked; /* queue being checked */ unsigned int flags; /* status flags */ unsigned int info_flags; /* info for sync */ @@ -59,9 +59,6 @@ struct snd_seq_queue *snd_seq_queue_alloc(int client, int locked, unsigned int f /* delete queue (destructor) */ int snd_seq_queue_delete(int client, int queueid); -/* notification that client has left the system */ -void snd_seq_queue_client_termination(int client); - /* final stage */ void snd_seq_queue_client_leave(int client); diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c index 1645e4142e30..9863be6fd43e 100644 --- a/sound/core/seq/seq_timer.c +++ b/sound/core/seq/seq_timer.c @@ -297,8 +297,16 @@ int snd_seq_timer_open(struct snd_seq_queue *q) return err; } spin_lock_irq(&tmr->lock); - tmr->timeri = t; + if (tmr->timeri) + err = -EBUSY; + else + tmr->timeri = t; spin_unlock_irq(&tmr->lock); + if (err < 0) { + snd_timer_close(t); + snd_timer_instance_free(t); + return err; + } return 0; } diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c index 77d7037d1476..f5cae49500c8 100644 --- a/sound/core/seq/seq_virmidi.c +++ b/sound/core/seq/seq_virmidi.c @@ -263,6 +263,16 @@ static int snd_virmidi_output_close(struct snd_rawmidi_substream *substream) } /* + * drain output work queue + */ +static void snd_virmidi_output_drain(struct snd_rawmidi_substream *substream) +{ + struct snd_virmidi *vmidi = substream->runtime->private_data; + + flush_work(&vmidi->output_work); +} + +/* * subscribe callback - allow output to rawmidi device */ static int snd_virmidi_subscribe(void *private_data, @@ -336,6 +346,7 @@ static const struct snd_rawmidi_ops snd_virmidi_output_ops = { .open = snd_virmidi_output_open, .close = snd_virmidi_output_close, .trigger = snd_virmidi_output_trigger, + .drain = snd_virmidi_output_drain, }; /* @@ -482,10 +493,11 @@ int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmi int err; *rrmidi = NULL; - if ((err = snd_rawmidi_new(card, "VirMidi", device, - 16, /* may be configurable */ - 16, /* may be configurable */ - &rmidi)) < 0) + err = snd_rawmidi_new(card, "VirMidi", device, + 16, /* may be configurable */ + 16, /* may be configurable */ + &rmidi); + if (err < 0) return err; strcpy(rmidi->name, rmidi->id); rdev = kzalloc(sizeof(*rdev), GFP_KERNEL); diff --git a/sound/core/seq_device.c b/sound/core/seq_device.c index 7ed13cb32ef8..7f3fd8eb016f 100644 --- a/sound/core/seq_device.c +++ b/sound/core/seq_device.c @@ -133,10 +133,19 @@ void snd_seq_device_load_drivers(void) flush_work(&autoload_work); } EXPORT_SYMBOL(snd_seq_device_load_drivers); -#define cancel_autoload_drivers() cancel_work_sync(&autoload_work) + +static inline void cancel_autoload_drivers(void) +{ + cancel_work_sync(&autoload_work); +} #else -#define queue_autoload_drivers() /* NOP */ -#define cancel_autoload_drivers() /* NOP */ +static inline void queue_autoload_drivers(void) +{ +} + +static inline void cancel_autoload_drivers(void) +{ +} #endif /* @@ -147,6 +156,8 @@ static int snd_seq_device_dev_free(struct snd_device *device) struct snd_seq_device *dev = device->device_data; cancel_autoload_drivers(); + if (dev->private_free) + dev->private_free(dev); put_device(&dev->dev); return 0; } @@ -174,11 +185,7 @@ static int snd_seq_device_dev_disconnect(struct snd_device *device) static void snd_seq_dev_release(struct device *dev) { - struct snd_seq_device *sdev = to_seq_dev(dev); - - if (sdev->private_free) - sdev->private_free(sdev); - kfree(sdev); + kfree(to_seq_dev(dev)); } /* |