From f46c329644b1f7144d336fce037dd9f84ee1995f Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 17 Jul 2012 16:48:27 +0200
Subject: ALSA: hda - Fix index number conflicts of phantom jacks

Since some jack controls may be renamed as phantom jacks, the existing
check for index conflicts doesn't work because it simply compares the
name with the last used name, assuming that the controls with the same
name continue.  Thus, it would result in the duplicated controls when
two or more phantom jacks with the very same type exist, and the
driver gives up with an error.

This patch fixes the problem by checking the index number conflicts
more intensively (but dumbly).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/hda_jack.c | 45 ++++++++++++++++++++++++++++++---------------
 1 file changed, 30 insertions(+), 15 deletions(-)

(limited to 'sound')

diff --git a/sound/pci/hda/hda_jack.c b/sound/pci/hda/hda_jack.c
index 60c976f06280..aaccc0236bda 100644
--- a/sound/pci/hda/hda_jack.c
+++ b/sound/pci/hda/hda_jack.c
@@ -314,9 +314,28 @@ int snd_hda_jack_add_kctl(struct hda_codec *codec, hda_nid_t nid,
 }
 EXPORT_SYMBOL_HDA(snd_hda_jack_add_kctl);
 
+/* get the unique index number for the given kctl name */
+static int get_unique_index(struct hda_codec *codec, const char *name, int idx)
+{
+	struct hda_jack_tbl *jack;
+	int i, len = strlen(name);
+ again:
+	jack = codec->jacktbl.list;
+	for (i = 0; i < codec->jacktbl.used; i++, jack++) {
+		/* jack->kctl.id contains "XXX Jack" name string with index */
+		if (jack->kctl &&
+		    !strncmp(name, jack->kctl->id.name, len) &&
+		    !strcmp(" Jack", jack->kctl->id.name + len) &&
+		    jack->kctl->id.index == idx) {
+			idx++;
+			goto again;
+		}
+	}
+	return idx;
+}
+
 static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
-			 const struct auto_pin_cfg *cfg,
-			 char *lastname, int *lastidx)
+			 const struct auto_pin_cfg *cfg)
 {
 	unsigned int def_conf, conn;
 	char name[44];
@@ -336,10 +355,7 @@ static int add_jack_kctl(struct hda_codec *codec, hda_nid_t nid,
 	if (phantom_jack)
 		/* Example final name: "Internal Mic Phantom Jack" */
 		strncat(name, " Phantom", sizeof(name) - strlen(name) - 1);
-	if (!strcmp(name, lastname) && idx == *lastidx)
-		idx++;
-	strncpy(lastname, name, sizeof(name));
-	*lastidx = idx;
+	idx = get_unique_index(codec, name, idx);
 	err = __snd_hda_jack_add_kctl(codec, nid, name, idx, phantom_jack);
 	if (err < 0)
 		return err;
@@ -356,42 +372,41 @@ int snd_hda_jack_add_kctls(struct hda_codec *codec,
 			   const struct auto_pin_cfg *cfg)
 {
 	const hda_nid_t *p;
-	int i, err, lastidx = 0;
-	char lastname[44] = "";
+	int i, err;
 
 	for (i = 0, p = cfg->line_out_pins; i < cfg->line_outs; i++, p++) {
-		err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
+		err = add_jack_kctl(codec, *p, cfg);
 		if (err < 0)
 			return err;
 	}
 	for (i = 0, p = cfg->hp_pins; i < cfg->hp_outs; i++, p++) {
 		if (*p == *cfg->line_out_pins) /* might be duplicated */
 			break;
-		err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
+		err = add_jack_kctl(codec, *p, cfg);
 		if (err < 0)
 			return err;
 	}
 	for (i = 0, p = cfg->speaker_pins; i < cfg->speaker_outs; i++, p++) {
 		if (*p == *cfg->line_out_pins) /* might be duplicated */
 			break;
-		err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
+		err = add_jack_kctl(codec, *p, cfg);
 		if (err < 0)
 			return err;
 	}
 	for (i = 0; i < cfg->num_inputs; i++) {
-		err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg, lastname, &lastidx);
+		err = add_jack_kctl(codec, cfg->inputs[i].pin, cfg);
 		if (err < 0)
 			return err;
 	}
 	for (i = 0, p = cfg->dig_out_pins; i < cfg->dig_outs; i++, p++) {
-		err = add_jack_kctl(codec, *p, cfg, lastname, &lastidx);
+		err = add_jack_kctl(codec, *p, cfg);
 		if (err < 0)
 			return err;
 	}
-	err = add_jack_kctl(codec, cfg->dig_in_pin, cfg, lastname, &lastidx);
+	err = add_jack_kctl(codec, cfg->dig_in_pin, cfg);
 	if (err < 0)
 		return err;
-	err = add_jack_kctl(codec, cfg->mono_out_pin, cfg, lastname, &lastidx);
+	err = add_jack_kctl(codec, cfg->mono_out_pin, cfg);
 	if (err < 0)
 		return err;
 	return 0;
-- 
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