ALSA: fireface: add local framework to message parser

[linux-2.6-microblaze.git] / sound / firewire / fireface / ff-transaction.c

diff --git a/sound/firewire/fireface/ff-transaction.c b/sound/firewire/fireface/ff-transaction.c
index 79f733d..6b89e39 100644 (file)
--- a/sound/firewire/fireface/ff-transaction.c
+++ b/sound/firewire/fireface/ff-transaction.c
@@ -132,11 +132,15 @@ static void handle_msg(struct fw_card *card, struct fw_request *request, int tco
        struct snd_ff *ff = callback_data;
        __le32 *buf = data;
        u32 tstamp = fw_request_get_timestamp(request);
+       unsigned long flag;
 
        fw_send_response(card, request, RCODE_COMPLETE);
 
        offset -= ff->async_handler.offset;
+
+       spin_lock_irqsave(&ff->lock, flag);
        ff->spec->protocol->handle_msg(ff, (unsigned int)offset, buf, length, tstamp);
+       spin_unlock_irqrestore(&ff->lock, flag);
 }
 
 static int allocate_own_address(struct snd_ff *ff, int i)