--- zzzz-none-000/linux-3.10.107/sound/core/seq/seq_memory.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/sound/core/seq/seq_memory.c	2021-02-04 17:41:59.000000000 +0000
@@ -101,9 +101,9 @@
 			len -= size;
 		}
 		return 0;
-	} if (! (event->data.ext.len & SNDRV_SEQ_EXT_CHAINED)) {
-		return func(private_data, event->data.ext.ptr, len);
 	}
+	if (!(event->data.ext.len & SNDRV_SEQ_EXT_CHAINED))
+		return func(private_data, event->data.ext.ptr, len);
 
 	cell = (struct snd_seq_event_cell *)event->data.ext.ptr;
 	for (; len > 0 && cell; cell = cell->next) {
@@ -236,7 +236,7 @@
 	init_waitqueue_entry(&wait, current);
 	spin_lock_irqsave(&pool->lock, flags);
 	if (pool->ptr == NULL) {	/* not initialized */
-		snd_printd("seq: pool is not initialized\n");
+		pr_debug("ALSA: seq: pool is not initialized\n");
 		err = -EINVAL;
 		goto __error;
 	}
@@ -383,17 +383,20 @@
 
 	if (snd_BUG_ON(!pool))
 		return -EINVAL;
-	if (pool->ptr)			/* should be atomic? */
-		return 0;
 
-	pool->ptr = vmalloc(sizeof(struct snd_seq_event_cell) * pool->size);
-	if (pool->ptr == NULL) {
-		snd_printd("seq: malloc for sequencer events failed\n");
+	cellptr = vmalloc(sizeof(struct snd_seq_event_cell) * pool->size);
+	if (!cellptr)
 		return -ENOMEM;
-	}
 
 	/* add new cells to the free cell list */
 	spin_lock_irqsave(&pool->lock, flags);
+	if (pool->ptr) {
+		spin_unlock_irqrestore(&pool->lock, flags);
+		vfree(cellptr);
+		return 0;
+	}
+
+	pool->ptr = cellptr;
 	pool->free = NULL;
 
 	for (cell = 0; cell < pool->size; cell++) {
@@ -464,10 +467,8 @@
 
 	/* create pool block */
 	pool = kzalloc(sizeof(*pool), GFP_KERNEL);
-	if (pool == NULL) {
-		snd_printd("seq: malloc failed for pool\n");
+	if (!pool)
 		return NULL;
-	}
 	spin_lock_init(&pool->lock);
 	pool->ptr = NULL;
 	pool->free = NULL;