Allow using global timers as a timer source when card id is equal to -1
in the timer_source parameter.

Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com>
---
 sound/drivers/aloop.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/drivers/aloop.c b/sound/drivers/aloop.c
index d6dd4b8c750a..a1e5e7fe9c72 100644
--- a/sound/drivers/aloop.c
+++ b/sound/drivers/aloop.c
@@ -1130,6 +1130,8 @@ static int loopback_parse_timer_id(const char *str,
 			}
 		}
 	}
+	if (card_idx == -1)
+		tid->dev_class = SNDRV_TIMER_CLASS_GLOBAL;
 	if (!err && tid) {
 		tid->card = card_idx;
 		tid->device = dev;
-- 
2.34.1