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-rw-r--r--sound/firewire/fireworks/fireworks.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index d5b19bc11e59..8f27b67503c8 100644
--- a/sound/firewire/fireworks/fireworks.c
+++ b/sound/firewire/fireworks/fireworks.c
@@ -301,7 +301,10 @@ static void efw_update(struct fw_unit *unit)
struct snd_efw *efw = dev_get_drvdata(&unit->device);
snd_efw_transaction_bus_reset(efw->unit);
+
+ mutex_lock(&efw->mutex);
snd_efw_stream_update_duplex(efw);
+ mutex_unlock(&efw->mutex);
}
static void efw_remove(struct fw_unit *unit)