diff options
Diffstat (limited to 'sound/firewire/motu/motu-transaction.c')
| -rw-r--r-- | sound/firewire/motu/motu-transaction.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/firewire/motu/motu-transaction.c b/sound/firewire/motu/motu-transaction.c index 416dd9833896..7fc30091e0de 100644 --- a/sound/firewire/motu/motu-transaction.c +++ b/sound/firewire/motu/motu-transaction.c @@ -50,7 +50,27 @@ static void handle_message(struct fw_card *card, struct fw_request *request, int generation, unsigned long long offset, void *data, size_t length, void *callback_data) { + struct snd_motu *motu = callback_data; + __be32 *buf = (__be32 *)data; + unsigned long flags; + + if (tcode != TCODE_WRITE_QUADLET_REQUEST) { + fw_send_response(card, request, RCODE_COMPLETE); + return; + } + + if (offset != motu->async_handler.offset || length != 4) { + fw_send_response(card, request, RCODE_ADDRESS_ERROR); + return; + } + + spin_lock_irqsave(&motu->lock, flags); + motu->msg = be32_to_cpu(*buf); + spin_unlock_irqrestore(&motu->lock, flags); + fw_send_response(card, request, RCODE_COMPLETE); + + wake_up(&motu->hwdep_wait); } int snd_motu_transaction_reregister(struct snd_motu *motu) |