diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/seq/seq_clientmgr.c | 1 | ||||
| -rw-r--r-- | sound/core/seq/seq_fifo.c | 10 | ||||
| -rw-r--r-- | sound/core/seq/seq_lock.c | 9 | ||||
| -rw-r--r-- | sound/core/seq/seq_memory.c | 17 | ||||
| -rw-r--r-- | sound/core/seq/seq_memory.h | 1 | ||||
| -rw-r--r-- | sound/core/timer.c | 18 |
6 files changed, 43 insertions, 13 deletions
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index ce6703ecfcef..8158ba354b48 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1921,6 +1921,7 @@ static int snd_seq_ioctl_set_client_pool(struct snd_seq_client *client, info.output_pool != client->pool->size)) { if (snd_seq_write_pool_allocated(client)) { /* remove all existing cells */ + snd_seq_pool_mark_closing(client->pool); snd_seq_queue_client_leave_cells(client->number); snd_seq_pool_done(client->pool); } diff --git a/sound/core/seq/seq_fifo.c b/sound/core/seq/seq_fifo.c index 1d5acbe0c08b..3490d21ab9e7 100644 --- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -70,6 +70,9 @@ void snd_seq_fifo_delete(struct snd_seq_fifo **fifo) return; *fifo = NULL; + if (f->pool) + snd_seq_pool_mark_closing(f->pool); + snd_seq_fifo_clear(f); /* wake up clients if any */ @@ -135,6 +138,7 @@ int snd_seq_fifo_event_in(struct snd_seq_fifo *f, f->tail = cell; if (f->head == NULL) f->head = cell; + cell->next = NULL; f->cells++; spin_unlock_irqrestore(&f->lock, flags); @@ -214,6 +218,8 @@ void snd_seq_fifo_cell_putback(struct snd_seq_fifo *f, spin_lock_irqsave(&f->lock, flags); cell->next = f->head; f->head = cell; + if (!f->tail) + f->tail = cell; f->cells++; spin_unlock_irqrestore(&f->lock, flags); } @@ -259,6 +265,10 @@ int snd_seq_fifo_resize(struct snd_seq_fifo *f, int poolsize) /* NOTE: overflow flag is not cleared */ spin_unlock_irqrestore(&f->lock, flags); + /* close the old pool and wait until all users are gone */ + snd_seq_pool_mark_closing(oldpool); + snd_use_lock_sync(&f->use_lock); + /* release cells in old pool */ for (cell = oldhead; cell; cell = next) { next = cell->next; diff --git a/sound/core/seq/seq_lock.c b/sound/core/seq/seq_lock.c index 3b693e924db7..12ba83367b1b 100644 --- a/sound/core/seq/seq_lock.c +++ b/sound/core/seq/seq_lock.c @@ -28,19 +28,16 @@ /* wait until all locks are released */ void snd_use_lock_sync_helper(snd_use_lock_t *lockp, const char *file, int line) { - int max_count = 5 * HZ; + int warn_count = 5 * HZ; if (atomic_read(lockp) < 0) { pr_warn("ALSA: seq_lock: lock trouble [counter = %d] in %s:%d\n", atomic_read(lockp), file, line); return; } while (atomic_read(lockp) > 0) { - if (max_count == 0) { - pr_warn("ALSA: seq_lock: timeout [%d left] in %s:%d\n", atomic_read(lockp), file, line); - break; - } + if (warn_count-- == 0) + pr_warn("ALSA: seq_lock: waiting [%d left] in %s:%d\n", atomic_read(lockp), file, line); schedule_timeout_uninterruptible(1); - max_count--; } } diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c index dfa5156f3585..5847c4475bf3 100644 --- a/sound/core/seq/seq_memory.c +++ b/sound/core/seq/seq_memory.c @@ -414,6 +414,18 @@ int snd_seq_pool_init(struct snd_seq_pool *pool) return 0; } +/* refuse the further insertion to the pool */ +void snd_seq_pool_mark_closing(struct snd_seq_pool *pool) +{ + unsigned long flags; + + if (snd_BUG_ON(!pool)) + return; + spin_lock_irqsave(&pool->lock, flags); + pool->closing = 1; + spin_unlock_irqrestore(&pool->lock, flags); +} + /* remove events */ int snd_seq_pool_done(struct snd_seq_pool *pool) { @@ -424,10 +436,6 @@ int snd_seq_pool_done(struct snd_seq_pool *pool) return -EINVAL; /* wait for closing all threads */ - spin_lock_irqsave(&pool->lock, flags); - pool->closing = 1; - spin_unlock_irqrestore(&pool->lock, flags); - if (waitqueue_active(&pool->output_sleep)) wake_up(&pool->output_sleep); @@ -484,6 +492,7 @@ int snd_seq_pool_delete(struct snd_seq_pool **ppool) *ppool = NULL; if (pool == NULL) return 0; + snd_seq_pool_mark_closing(pool); snd_seq_pool_done(pool); kfree(pool); return 0; diff --git a/sound/core/seq/seq_memory.h b/sound/core/seq/seq_memory.h index 4a2ec779b8a7..32f959c17786 100644 --- a/sound/core/seq/seq_memory.h +++ b/sound/core/seq/seq_memory.h @@ -84,6 +84,7 @@ static inline int snd_seq_total_cells(struct snd_seq_pool *pool) int snd_seq_pool_init(struct snd_seq_pool *pool); /* done pool - free events */ +void snd_seq_pool_mark_closing(struct snd_seq_pool *pool); int snd_seq_pool_done(struct snd_seq_pool *pool); /* create pool */ diff --git a/sound/core/timer.c b/sound/core/timer.c index 8800d237369a..b024ef0ec32b 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -1695,9 +1695,21 @@ static int snd_timer_user_params(struct file *file, return -EBADFD; if (copy_from_user(¶ms, _params, sizeof(params))) return -EFAULT; - if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE) && params.ticks < 1) { - err = -EINVAL; - goto _end; + if (!(t->hw.flags & SNDRV_TIMER_HW_SLAVE)) { + u64 resolution; + + if (params.ticks < 1) { + err = -EINVAL; + goto _end; + } + + /* Don't allow resolution less than 1ms */ + resolution = snd_timer_resolution(tu->timeri); + resolution *= params.ticks; + if (resolution < 1000000) { + err = -EINVAL; + goto _end; + } } if (params.queue_size > 0 && (params.queue_size < 32 || params.queue_size > 1024)) { |