ALSA: seq: Don't allow resizing pool in use

[pandora-kernel.git] / sound / core / seq / seq_clientmgr.c

diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 8cc1831..04522dc 100644 (file)
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1917,6 +1917,9 @@ static int snd_seq_ioctl_set_client_pool(struct snd_seq_client *client,
            (! snd_seq_write_pool_allocated(client) ||
             info.output_pool != client->pool->size)) {
                if (snd_seq_write_pool_allocated(client)) {
+                       /* is the pool in use? */
+                       if (atomic_read(&client->pool->counter))
+                               return -EBUSY;
                        /* remove all existing cells */
                        snd_seq_pool_mark_closing(client->pool);
                        snd_seq_queue_client_leave_cells(client->number);