ALSA: hda: ext: remove always-true conditions on host and link release

By construction a host and link DMA are always decoupled. This
decoupling happens in the assign() phase. There's no point in checking
if the two parts are decoupled, this is by-design always-true.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20220919121041.43463-9-pierre-louis.bossart@linux.intel.comSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/hda/ext/hdac_ext_stream.c

@@ -382,7 +382,8 @@ void snd_hdac_ext_stream_release(struct hdac_ext_stream *hext_stream, int type)
 
 	case HDAC_EXT_STREAM_TYPE_HOST:
 		spin_lock_irq(&bus->reg_lock);
-		if (hext_stream->decoupled && !hext_stream->link_locked)
+		/* couple link only if not in use */
+		if (!hext_stream->link_locked)
 			snd_hdac_ext_stream_decouple_locked(bus, hext_stream, false);
 		snd_hdac_stream_release_locked(&hext_stream->hstream);
 		spin_unlock_irq(&bus->reg_lock);
@@ -390,7 +391,8 @@ void snd_hdac_ext_stream_release(struct hdac_ext_stream *hext_stream, int type)
 
 	case HDAC_EXT_STREAM_TYPE_LINK:
 		spin_lock_irq(&bus->reg_lock);
-		if (hext_stream->decoupled && !hext_stream->hstream.opened)
+		/* couple host only if not in use */
+		if (!hext_stream->hstream.opened)
 			snd_hdac_ext_stream_decouple_locked(bus, hext_stream, false);
 		hext_stream->link_locked = 0;
 		hext_stream->link_substream = NULL;