ASoC: core: refactor soc_link_dai_widgets()

In soc_link_dai_widgets() we refer to local widget variables as
playback/capture_widget, but they are really sink/source widgets,
so change the names accordingly
Suggested-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/soc-core.c

@@ -1283,35 +1283,35 @@ static int soc_link_dai_widgets(struct snd_soc_card *card,
 {
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
-	struct snd_soc_dapm_widget *play_w, *capture_w;
+	struct snd_soc_dapm_widget *sink, *source;
 	int ret;
 
 	if (rtd->num_codecs > 1)
 		dev_warn(card->dev, "ASoC: Multiple codecs not supported yet\n");
 
 	/* link the DAI widgets */
-	play_w = codec_dai->playback_widget;
-	capture_w = cpu_dai->capture_widget;
-	if (play_w && capture_w) {
+	sink = codec_dai->playback_widget;
+	source = cpu_dai->capture_widget;
+	if (sink && source) {
 		ret = snd_soc_dapm_new_pcm(card, dai_link->params,
-					   dai_link->num_params, capture_w,
-					   play_w);
+					   dai_link->num_params,
+					   source, sink);
 		if (ret != 0) {
 			dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
-				play_w->name, capture_w->name, ret);
+				sink->name, source->name, ret);
 			return ret;
 		}
 	}
 
-	play_w = cpu_dai->playback_widget;
-	capture_w = codec_dai->capture_widget;
-	if (play_w && capture_w) {
+	sink = cpu_dai->playback_widget;
+	source = codec_dai->capture_widget;
+	if (sink && source) {
 		ret = snd_soc_dapm_new_pcm(card, dai_link->params,
-					   dai_link->num_params, capture_w,
-					   play_w);
+					   dai_link->num_params,
+					   source, sink);
 		if (ret != 0) {
 			dev_err(card->dev, "ASoC: Can't link %s to %s: %d\n",
-				play_w->name, capture_w->name, ret);
+				sink->name, source->name, ret);
 			return ret;
 		}
 	}