ALSA: fireworks: serialize transactions to update connections at bus reset

[cascardo/linux.git] / sound / firewire / fireworks / fireworks.c

diff --git a/sound/firewire/fireworks/fireworks.c b/sound/firewire/fireworks/fireworks.c
index d5b19bc..8f27b67 100644 (file)
--- 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)