ALSA: hda/realtek - Minor cleanup

Use an inline function for the common pattern for assigning a capsrc.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/hda/patch_realtek.c

@@ -277,6 +277,12 @@ static bool alc_dyn_adc_pcm_resetup(struct hda_codec *codec, int cur)
 	return false;
 }
 
+static inline hda_nid_t get_capsrc(struct alc_spec *spec, int idx)
+{
+	return spec->capsrc_nids ?
+		spec->capsrc_nids[idx] : spec->adc_nids[idx];
+}
+
 /* select the given imux item; either unmute exclusively or select the route */
 static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx,
 			  unsigned int idx, bool force)
@@ -303,8 +309,7 @@ static int alc_mux_select(struct hda_codec *codec, unsigned int adc_idx,
 		adc_idx = spec->dyn_adc_idx[idx];
 	}
 
-	nid = spec->capsrc_nids ?
-		spec->capsrc_nids[adc_idx] : spec->adc_nids[adc_idx];
+	nid = get_capsrc(spec, adc_idx);
 
 	/* no selection? */
 	num_conns = snd_hda_get_conn_list(codec, nid, NULL);
@@ -1058,8 +1063,7 @@ static bool alc_rebuild_imux_for_auto_mic(struct hda_codec *codec)
 			hda_nid_t pin = spec->imux_pins[i];
 			int c;
 			for (c = 0; c < spec->num_adc_nids; c++) {
-				hda_nid_t cap = spec->capsrc_nids ?
-				spec->capsrc_nids[c] : spec->adc_nids[c];
+				hda_nid_t cap = get_capsrc(spec, c);
 				int idx = get_connection_index(codec, cap, pin);
 				if (idx >= 0) {
 					imux->items[i].index = idx;
@@ -1969,10 +1973,8 @@ static int alc_build_controls(struct hda_codec *codec)
 		if (!kctl)
 			kctl = snd_hda_find_mixer_ctl(codec, "Input Source");
 		for (i = 0; kctl && i < kctl->count; i++) {
-			const hda_nid_t *nids = spec->capsrc_nids;
-			if (!nids)
-				nids = spec->adc_nids;
-			err = snd_hda_add_nid(codec, kctl, i, nids[i]);
+			err = snd_hda_add_nid(codec, kctl, i,
+					      get_capsrc(spec, i));
 			if (err < 0)
 				return err;
 		}
@@ -2759,8 +2761,7 @@ static int alc_auto_create_input_ctls(struct hda_codec *codec)
 		}
 
 		for (c = 0; c < num_adcs; c++) {
-			hda_nid_t cap = spec->capsrc_nids ?
-				spec->capsrc_nids[c] : spec->adc_nids[c];
+			hda_nid_t cap = get_capsrc(spec, c);
 			idx = get_connection_index(codec, cap, pin);
 			if (idx >= 0) {
 				spec->imux_pins[imux->num_items] = pin;
@@ -3706,8 +3707,7 @@ static int init_capsrc_for_pin(struct hda_codec *codec, hda_nid_t pin)
 	if (!pin)
 		return 0;
 	for (i = 0; i < spec->num_adc_nids; i++) {
-		hda_nid_t cap = spec->capsrc_nids ?
-			spec->capsrc_nids[i] : spec->adc_nids[i];
+		hda_nid_t cap = get_capsrc(spec, i);
 		int idx;
 
 		idx = get_connection_index(codec, cap, pin);