ASoC: pcm: Reverse iterate DAIs when shutting them down

During startup snd_soc_dai_startup() is launched in ascending order and
the exact same thing is done during shutdown procedure. Reverse the
order in the latter so that it is symmetric to the former.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20240426095733.3946951-2-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: crojewsk-intel

include/sound/soc.h

@@ -1235,6 +1235,10 @@ struct snd_soc_pcm_runtime {
 	     ((i) < (rtd)->dai_link->num_cpus + (rtd)->dai_link->num_codecs) &&	\
 		     ((dai) = (rtd)->dais[i]);				\
 	     (i)++)
+#define for_each_rtd_dais_reverse(rtd, i, dai)					\
+	for ((i) = (rtd)->dai_link->num_cpus + (rtd)->dai_link->num_codecs - 1;	\
+	     (i) >= 0 && ((dai) = (rtd)->dais[i]);				\
+	     (i)--)
 #define for_each_rtd_ch_maps(rtd, i, ch_maps) for_each_link_ch_maps(rtd->dai_link, i, ch_maps)
 
 void snd_soc_close_delayed_work(struct snd_soc_pcm_runtime *rtd);

sound/soc/soc-pcm.c

@@ -724,7 +724,7 @@ static int soc_pcm_clean(struct snd_soc_pcm_runtime *rtd,
 		}
 	}
 
-	for_each_rtd_dais(rtd, i, dai)
+	for_each_rtd_dais_reverse(rtd, i, dai)
 		snd_soc_dai_shutdown(dai, substream, rollback);
 
 	snd_soc_link_shutdown(substream, rollback);