ALSA: ASoC: Refactor DAPM event handler

The DAPM event callback code has many layers of indentation, taking it
over 80 columns. Refactor the code to give less indentation in order to
avoid checkpatch issues on further changes and exploding indentation.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/soc/soc-dapm.c

@@ -586,47 +586,50 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
 			power_change = (w->power == power) ? 0: 1;
 			w->power = power;
 
+			if (!power_change)
+				continue;
+
 			/* call any power change event handlers */
-			if (power_change) {
-				if (w->event) {
+			if (w->event)
 				pr_debug("power %s event for %s flags %x\n",
-						 w->power ? "on" : "off", w->name, w->event_flags);
-					if (power) {
-						/* power up event */
-						if (w->event_flags & SND_SOC_DAPM_PRE_PMU) {
-							ret = w->event(w,
-								NULL, SND_SOC_DAPM_PRE_PMU);
+					 w->power ? "on" : "off",
+					 w->name, w->event_flags);
+
+			/* power up pre event */
+			if (power && w->event &&
+			    (w->event_flags & SND_SOC_DAPM_PRE_PMU)) {
+				ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU);
 				if (ret < 0)
 					return ret;
 			}
-						dapm_update_bits(w);
-						if (w->event_flags & SND_SOC_DAPM_POST_PMU){
-							ret = w->event(w,
-								NULL, SND_SOC_DAPM_POST_PMU);
+
+			/* power down pre event */
+			if (!power && w->event &&
+			    (w->event_flags & SND_SOC_DAPM_PRE_PMD)) {
+				ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD);
 				if (ret < 0)
 					return ret;
 			}
-					} else {
-						/* power down event */
-						if (w->event_flags & SND_SOC_DAPM_PRE_PMD) {
+
+			dapm_update_bits(w);
+
+			/* power up post event */
+			if (power && w->event &&
+			    (w->event_flags & SND_SOC_DAPM_POST_PMU)) {
 				ret = w->event(w,
-								NULL, SND_SOC_DAPM_PRE_PMD);
+					       NULL, SND_SOC_DAPM_POST_PMU);
 				if (ret < 0)
 					return ret;
 			}
-						dapm_update_bits(w);
-						if (w->event_flags & SND_SOC_DAPM_POST_PMD) {
-							ret = w->event(w,
-								NULL, SND_SOC_DAPM_POST_PMD);
+
+			/* power down post event */
+			if (!power && w->event &&
+			    (w->event_flags & SND_SOC_DAPM_POST_PMD)) {
+				ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD);
 				if (ret < 0)
 					return ret;
 			}
 		}
-				} else
-					/* no event handler */
-					dapm_update_bits(w);
-			}
-		}
 	}
 
 	return ret;