From f44ac8378d3d84b912b34f08afaff64182ee1b41 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Wed, 30 Jul 2008 15:01:45 +0200
Subject: [PATCH] ALSA: hda - Allocate name string of each codec

Allocate dynamically the name string of each codec instead of
pointing to a static string.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/hda_codec.c | 37 +++++++++++++++++++++++++------------
 sound/pci/hda/hda_codec.h |  2 ++
 sound/pci/hda/hda_proc.c  |  5 ++---
 3 files changed, 29 insertions(+), 15 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 39a49d4a864a..53e36495fae5 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -446,7 +446,7 @@ int __devinit snd_hda_bus_new(struct snd_card *card,
 
 #ifdef CONFIG_SND_HDA_GENERIC
 #define is_generic_config(codec) \
-	(codec->bus->modelname && !strcmp(codec->bus->modelname, "generic"))
+	(codec->modelname && !strcmp(codec->modelname, "generic"))
 #else
 #define is_generic_config(codec)	0
 #endif
@@ -481,15 +481,14 @@ find_codec_preset(struct hda_codec *codec)
 }
 
 /*
- * snd_hda_get_codec_name - store the codec name
+ * get_codec_name - store the codec name
  */
-void snd_hda_get_codec_name(struct hda_codec *codec,
-			    char *name, int namelen)
+static int get_codec_name(struct hda_codec *codec)
 {
 	const struct hda_vendor_id *c;
 	const char *vendor = NULL;
 	u16 vendor_id = codec->vendor_id >> 16;
-	char tmp[16];
+	char tmp[16], name[32];
 
 	for (c = hda_vendor_ids; c->id; c++) {
 		if (c->id == vendor_id) {
@@ -502,10 +501,15 @@ void snd_hda_get_codec_name(struct hda_codec *codec,
 		vendor = tmp;
 	}
 	if (codec->preset && codec->preset->name)
-		snprintf(name, namelen, "%s %s", vendor, codec->preset->name);
+		snprintf(name, sizeof(name), "%s %s", vendor,
+			 codec->preset->name);
 	else
-		snprintf(name, namelen, "%s ID %x", vendor,
+		snprintf(name, sizeof(name), "%s ID %x", vendor,
 			 codec->vendor_id & 0xffff);
+	codec->name = kstrdup(name, GFP_KERNEL);
+	if (!codec->name)
+		return -ENOMEM;
+	return 0;
 }
 
 /*
@@ -575,6 +579,8 @@ static void snd_hda_codec_free(struct hda_codec *codec)
 		codec->patch_ops.free(codec);
 	free_hda_cache(&codec->amp_cache);
 	free_hda_cache(&codec->cmd_cache);
+	kfree(codec->name);
+	kfree(codec->modelname);
 	kfree(codec->wcaps);
 	kfree(codec);
 }
@@ -661,12 +667,19 @@ int __devinit snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr,
 			snd_hda_codec_read(codec, nid, 0,
 					   AC_VERB_GET_SUBSYSTEM_ID, 0);
 	}
+	if (bus->modelname)
+		codec->modelname = kstrdup(bus->modelname, GFP_KERNEL);
 
 	codec->preset = find_codec_preset(codec);
+	if (!codec->name) {
+		err = get_codec_name(codec);
+		if (err < 0)
+			return err;
+	}
 	/* audio codec should override the mixer name */
-	if (codec->afg || !*bus->card->mixername)
-		snd_hda_get_codec_name(codec, bus->card->mixername,
-				       sizeof(bus->card->mixername));
+	if (codec->afg || !*codec->bus->card->mixername)
+		strlcpy(codec->bus->card->mixername, codec->name,
+			sizeof(codec->bus->card->mixername));
 
 	if (is_generic_config(codec)) {
 		err = snd_hda_parse_generic_codec(codec);
@@ -2370,11 +2383,11 @@ int snd_hda_check_board_config(struct hda_codec *codec,
 			       int num_configs, const char **models,
 			       const struct snd_pci_quirk *tbl)
 {
-	if (codec->bus->modelname && models) {
+	if (codec->modelname && models) {
 		int i;
 		for (i = 0; i < num_configs; i++) {
 			if (models[i] &&
-			    !strcmp(codec->bus->modelname, models[i])) {
+			    !strcmp(codec->modelname, models[i])) {
 				snd_printd(KERN_INFO "hda_codec: model '%s' is "
 					   "selected\n", models[i]);
 				return i;
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 77064b0cb821..53f3b08b24cd 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -719,6 +719,8 @@ struct hda_codec {
 
 	/* detected preset */
 	const struct hda_codec_preset *preset;
+	const char *name;	/* codec name */
+	const char *modelname;	/* model name for preset */
 
 	/* set by patch */
 	struct hda_codec_ops patch_ops;
diff --git a/sound/pci/hda/hda_proc.c b/sound/pci/hda/hda_proc.c
index 743d77922bce..64ab19f14f79 100644
--- a/sound/pci/hda/hda_proc.c
+++ b/sound/pci/hda/hda_proc.c
@@ -511,12 +511,11 @@ static void print_codec_info(struct snd_info_entry *entry,
 			     struct snd_info_buffer *buffer)
 {
 	struct hda_codec *codec = entry->private_data;
-	char buf[32];
 	hda_nid_t nid;
 	int i, nodes;
 
-	snd_hda_get_codec_name(codec, buf, sizeof(buf));
-	snd_iprintf(buffer, "Codec: %s\n", buf);
+	snd_iprintf(buffer, "Codec: %s\n",
+		    codec->name ? codec->name : "Not Set");
 	snd_iprintf(buffer, "Address: %d\n", codec->addr);
 	snd_iprintf(buffer, "Vendor Id: 0x%x\n", codec->vendor_id);
 	snd_iprintf(buffer, "Subsystem Id: 0x%x\n", codec->subsystem_id);
-- 
2.39.5