From 9315d904c7e8f38886e2820fa6cb8d0fa723ea21 Mon Sep 17 00:00:00 2001 From: Srinivas Kandagatla Date: Thu, 6 Jun 2019 12:22:22 +0100 Subject: soundwire: stream: fix bad unlock balance the msg lock is taken for multi-link cases only but released unconditionally, leading to an unlock balance warning for single-link usages This patch fixes this. ===================================== WARNING: bad unlock balance detected! 5.1.0-16506-gc1c383a6f0a2-dirty #1523 Tainted: G W ------------------------------------- aplay/2954 is trying to release lock (&bus->msg_lock) at: do_bank_switch+0x21c/0x480 but there are no more locks to release! Signed-off-by: Srinivas Kandagatla Acked-by: Pierre-Louis Bossart Acked-by: Sanyog Kale [vkoul: edited the change log as suggested by Pierre] Signed-off-by: Vinod Koul --- drivers/soundwire/stream.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/soundwire') diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 544925ff0b40..1d5294b8783b 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -814,7 +814,8 @@ static int do_bank_switch(struct sdw_stream_runtime *stream) goto error; } - mutex_unlock(&bus->msg_lock); + if (bus->multi_link) + mutex_unlock(&bus->msg_lock); } return ret; -- cgit v1.2.3-59-g8ed1b