ALSA: firewire-motu: code refactoring for condition to stop streaming

In snd_motu_stream_start_duplex() function, there're two points to stop
packet streaming, however they can be merged.  This commit merges them.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/firewire/motu/motu-stream.c b/sound/firewire/motu/motu-stream.c
index 35b4e0f..a3f45f2 100644 (file)
--- a/sound/firewire/motu/motu-stream.c
+++ b/sound/firewire/motu/motu-stream.c
@@ -217,19 +217,11 @@ int snd_motu_stream_start_duplex(struct snd_motu *motu, unsigned int rate)
        if (motu->substreams_counter == 0)
                return 0;
 
-       /* Some packet queueing errors. */
-       if (amdtp_streaming_error(&motu->rx_stream) ||
-           amdtp_streaming_error(&motu->tx_stream)) {
-               amdtp_stream_stop(&motu->rx_stream);
-               amdtp_stream_stop(&motu->tx_stream);
-               stop_both_streams(motu);
-       }
-
        err = snd_motu_stream_cache_packet_formats(motu);
        if (err < 0)
                return err;
 
-       /* Stop stream if rate is different. */
+       // Stop stream if rate is different.
        err = protocol->get_clock_rate(motu, &curr_rate);
        if (err < 0) {
                dev_err(&motu->unit->device,
@@ -238,7 +230,9 @@ int snd_motu_stream_start_duplex(struct snd_motu *motu, unsigned int rate)
        }
        if (rate == 0)
                rate = curr_rate;
-       if (rate != curr_rate) {
+       if (rate != curr_rate ||
+           amdtp_streaming_error(&motu->rx_stream) ||
+           amdtp_streaming_error(&motu->tx_stream)) {
                amdtp_stream_stop(&motu->rx_stream);
                amdtp_stream_stop(&motu->tx_stream);
                stop_both_streams(motu);