As the comments of snd_soc_instantiate_cards() said, snd_soc_instantiate_cards() must be called with client_mutex.

Signed-off-by: Axel Lin axel.lin@gmail.com --- sound/soc/soc-core.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index eb950f7..0d69b91 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3299,7 +3299,9 @@ int snd_soc_register_dais(struct device *dev, pr_debug("Registered DAI '%s'\n", dai->name); }

+ mutex_lock(&client_mutex); snd_soc_instantiate_cards(); + mutex_unlock(&client_mutex); return 0;

err: