ALSA: hda - Use generic array helpers

Use generic array helpers to simplify array handling in snd-hda-intel.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

7 files changed, 132 insertions, 190 deletions

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index e70303183c3c..39a49d4a864a 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -756,12 +756,12 @@ static void __devinit init_hda_cache(struct hda_cache_rec *cache,
 {
         memset(cache, 0, sizeof(*cache));
         memset(cache->hash, 0xff, sizeof(cache->hash));
-        cache->record_size = record_size;
+        snd_array_init(&cache->buf, record_size, 64);
 }
 
 static void free_hda_cache(struct hda_cache_rec *cache)
 {
-        kfree(cache->buffer);
+        snd_array_free(&cache->buf);
 }
 
 /* query the hash.  allocate an entry if not found. */
@@ -770,38 +770,18 @@ static struct hda_cache_head  *get_alloc_hash(struct hda_cache_rec *cache,
 {
         u16 idx = key % (u16)ARRAY_SIZE(cache->hash);
         u16 cur = cache->hash[idx];
+        struct hda_cache_head *info_head = cache->buf.list;
         struct hda_cache_head *info;
 
         while (cur != 0xffff) {
-                info = (struct hda_cache_head *)(cache->buffer +
-                                                 cur * cache->record_size);
+                info = &info_head[cur];
                 if (info->key == key)
                         return info;
                 cur = info->next;
         }
 
         /* add a new hash entry */
-        if (cache->num_entries >= cache->size) {
-                /* reallocate the array */
-                unsigned int new_size = cache->size + 64;
-                void *new_buffer;
-                new_buffer = kcalloc(new_size, cache->record_size, GFP_KERNEL);
-                if (!new_buffer) {
-                        snd_printk(KERN_ERR "hda_codec: "
-                                   "can't malloc amp_info\n");
-                        return NULL;
-                }
-                if (cache->buffer) {
-                        memcpy(new_buffer, cache->buffer,
-                               cache->size * cache->record_size);
-                        kfree(cache->buffer);
-                }
-                cache->size = new_size;
-                cache->buffer = new_buffer;
-        }
-        cur = cache->num_entries++;
-        info = (struct hda_cache_head *)(cache->buffer +
-                                         cur * cache->record_size);
+        info = snd_array_new(&cache->buf);
         info->key = key;
         info->val = 0;
         info->next = cache->hash[idx];
@@ -942,10 +922,10 @@ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
 /* resume the all amp commands from the cache */
 void snd_hda_codec_resume_amp(struct hda_codec *codec)
 {
-        struct hda_amp_info *buffer = codec->amp_cache.buffer;
+        struct hda_amp_info *buffer = codec->amp_cache.buf.list;
         int i;
 
-        for (i = 0; i < codec->amp_cache.size; i++, buffer++) {
+        for (i = 0; i < codec->amp_cache.buf.used; i++, buffer++) {
                 u32 key = buffer->head.key;
                 hda_nid_t nid;
                 unsigned int idx, dir, ch;
@@ -1779,10 +1759,10 @@ int snd_hda_codec_write_cache(struct hda_codec *codec, hda_nid_t nid,
 /* resume the all commands from the cache */
 void snd_hda_codec_resume_cache(struct hda_codec *codec)
 {
-        struct hda_cache_head *buffer = codec->cmd_cache.buffer;
+        struct hda_cache_head *buffer = codec->cmd_cache.buf.list;
         int i;
 
-        for (i = 0; i < codec->cmd_cache.size; i++, buffer++) {
+        for (i = 0; i < codec->cmd_cache.buf.used; i++, buffer++) {
                 u32 key = buffer->key;
                 if (!key)
                         continue;
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index b9b21766b730..77064b0cb821 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -657,10 +657,7 @@ struct hda_amp_info {
 
 struct hda_cache_rec {
         u16 hash[64];                   /* hash table for index */
-        unsigned int num_entries;       /* number of assigned entries */
-        unsigned int size;              /* allocated size */
-        unsigned int record_size;       /* record size (including header) */
-        void *buffer;                   /* hash table entries */
+        struct snd_array buf;           /* record entries */
 };
 
 /* PCM callbacks */
diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c
index 2b00c4afdf97..02643bce5634 100644
--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -67,8 +67,7 @@ struct ad198x_spec {
 
         /* dynamic controls, init_verbs and input_mux */
         struct auto_pin_cfg autocfg;
-        unsigned int num_kctl_alloc, num_kctl_used;
-        struct snd_kcontrol_new *kctl_alloc;
+        struct snd_array kctls;
         struct hda_input_mux private_imux;
         hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
@@ -154,6 +153,8 @@ static const char *ad_slave_sws[] = {
         NULL
 };
 
+static void ad198x_free_kctls(struct hda_codec *codec);
+
 static int ad198x_build_controls(struct hda_codec *codec)
 {
         struct ad198x_spec *spec = codec->spec;
@@ -202,6 +203,7 @@ static int ad198x_build_controls(struct hda_codec *codec)
                         return err;
         }
 
+        ad198x_free_kctls(codec); /* no longer needed */
         return 0;
 }
 
@@ -375,16 +377,27 @@ static int ad198x_build_pcms(struct hda_codec *codec)
         return 0;
 }
 
-static void ad198x_free(struct hda_codec *codec)
+static void ad198x_free_kctls(struct hda_codec *codec)
 {
         struct ad198x_spec *spec = codec->spec;
-        unsigned int i;
 
-        if (spec->kctl_alloc) {
-                for (i = 0; i < spec->num_kctl_used; i++)
-                        kfree(spec->kctl_alloc[i].name);
-                kfree(spec->kctl_alloc);
+        if (spec->kctls.list) {
+                struct snd_kcontrol_new *kctl = spec->kctls.list;
+                int i;
+                for (i = 0; i < spec->kctls.used; i++)
+                        kfree(kctl[i].name);
         }
+        snd_array_free(&spec->kctls);
+}
+
+static void ad198x_free(struct hda_codec *codec)
+{
+        struct ad198x_spec *spec = codec->spec;
+
+        if (!spec)
+                return;
+
+        ad198x_free_kctls(codec);
         kfree(codec->spec);
 }
 
@@ -2452,9 +2465,6 @@ static struct hda_amp_list ad1988_loopbacks[] = {
  * Automatic parse of I/O pins from the BIOS configuration
  */
 
-#define NUM_CONTROL_ALLOC       32
-#define NUM_VERB_ALLOC          32
-
 enum {
         AD_CTL_WIDGET_VOL,
         AD_CTL_WIDGET_MUTE,
@@ -2472,27 +2482,15 @@ static int add_control(struct ad198x_spec *spec, int type, const char *name,
 {
         struct snd_kcontrol_new *knew;
 
-        if (spec->num_kctl_used >= spec->num_kctl_alloc) {
-                int num = spec->num_kctl_alloc + NUM_CONTROL_ALLOC;
-
-                knew = kcalloc(num + 1, sizeof(*knew), GFP_KERNEL); /* array + terminator */
-                if (! knew)
-                        return -ENOMEM;
-                if (spec->kctl_alloc) {
-                        memcpy(knew, spec->kctl_alloc, sizeof(*knew) * spec->num_kctl_alloc);
-                        kfree(spec->kctl_alloc);
-                }
-                spec->kctl_alloc = knew;
-                spec->num_kctl_alloc = num;
-        }
-
-        knew = &spec->kctl_alloc[spec->num_kctl_used];
+        snd_array_init(&spec->kctls, sizeof(*knew), 32);
+        knew = snd_array_new(&spec->kctls);
+        if (!knew)
+                return -ENOMEM;
         *knew = ad1988_control_templates[type];
         knew->name = kstrdup(name, GFP_KERNEL);
         if (! knew->name)
                 return -ENOMEM;
         knew->private_value = val;
-        spec->num_kctl_used++;
         return 0;
 }
 
@@ -2846,8 +2844,8 @@ static int ad1988_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = AD1988_SPDIF_IN;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++] = ad1988_6stack_init_verbs;
 
diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c
index 7c1eb23f0cec..076010708152 100644
--- a/sound/pci/hda/patch_conexant.c
+++ b/sound/pci/hda/patch_conexant.c
@@ -86,8 +86,6 @@ struct conexant_spec {
 
         /* dynamic controls, init_verbs and input_mux */
         struct auto_pin_cfg autocfg;
-        unsigned int num_kctl_alloc, num_kctl_used;
-        struct snd_kcontrol_new *kctl_alloc;
         struct hda_input_mux private_imux;
         hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
@@ -344,15 +342,6 @@ static int conexant_init(struct hda_codec *codec)
 
 static void conexant_free(struct hda_codec *codec)
 {
-        struct conexant_spec *spec = codec->spec;
-        unsigned int i;
-
-        if (spec->kctl_alloc) {
-                for (i = 0; i < spec->num_kctl_used; i++)
-                        kfree(spec->kctl_alloc[i].name);
-                kfree(spec->kctl_alloc);
-        }
-
         kfree(codec->spec);
 }
 
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 0b6e682c46d0..3e21a7198656 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -284,8 +284,7 @@ struct alc_spec {
 
         /* dynamic controls, init_verbs and input_mux */
         struct auto_pin_cfg autocfg;
-        unsigned int num_kctl_alloc, num_kctl_used;
-        struct snd_kcontrol_new *kctl_alloc;
+        struct snd_array kctls;
         struct hda_input_mux private_imux;
         hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
@@ -1590,6 +1589,9 @@ static const char *alc_slave_sws[] = {
 /*
  * build control elements
  */
+
+static void alc_free_kctls(struct hda_codec *codec);
+
 static int alc_build_controls(struct hda_codec *codec)
 {
         struct alc_spec *spec = codec->spec;
@@ -1636,6 +1638,7 @@ static int alc_build_controls(struct hda_codec *codec)
                         return err;
         }
 
+        alc_free_kctls(codec); /* no longer needed */
         return 0;
 }
 
@@ -2726,19 +2729,27 @@ static int alc_build_pcms(struct hda_codec *codec)
         return 0;
 }
 
+static void alc_free_kctls(struct hda_codec *codec)
+{
+        struct alc_spec *spec = codec->spec;
+
+        if (spec->kctls.list) {
+                struct snd_kcontrol_new *kctl = spec->kctls.list;
+                int i;
+                for (i = 0; i < spec->kctls.used; i++)
+                        kfree(kctl[i].name);
+        }
+        snd_array_free(&spec->kctls);
+}
+
 static void alc_free(struct hda_codec *codec)
 {
         struct alc_spec *spec = codec->spec;
-        unsigned int i;
 
         if (!spec)
                 return;
 
-        if (spec->kctl_alloc) {
-                for (i = 0; i < spec->num_kctl_used; i++)
-                        kfree(spec->kctl_alloc[i].name);
-                kfree(spec->kctl_alloc);
-        }
+        alc_free_kctls(codec);
         kfree(spec);
         codec->spec = NULL; /* to be sure */
 }
@@ -3423,9 +3434,6 @@ static struct alc_config_preset alc880_presets[] = {
  * Automatic parse of I/O pins from the BIOS configuration
  */
 
-#define NUM_CONTROL_ALLOC       32
-#define NUM_VERB_ALLOC          32
-
 enum {
         ALC_CTL_WIDGET_VOL,
         ALC_CTL_WIDGET_MUTE,
@@ -3443,29 +3451,15 @@ static int add_control(struct alc_spec *spec, int type, const char *name,
 {
         struct snd_kcontrol_new *knew;
 
-        if (spec->num_kctl_used >= spec->num_kctl_alloc) {
-                int num = spec->num_kctl_alloc + NUM_CONTROL_ALLOC;
-
-                /* array + terminator */
-                knew = kcalloc(num + 1, sizeof(*knew), GFP_KERNEL);
-                if (!knew)
-                        return -ENOMEM;
-                if (spec->kctl_alloc) {
-                        memcpy(knew, spec->kctl_alloc,
-                               sizeof(*knew) * spec->num_kctl_alloc);
-                        kfree(spec->kctl_alloc);
-                }
-                spec->kctl_alloc = knew;
-                spec->num_kctl_alloc = num;
-        }
-
-        knew = &spec->kctl_alloc[spec->num_kctl_used];
+        snd_array_init(&spec->kctls, sizeof(*knew), 32);
+        knew = snd_array_new(&spec->kctls);
+        if (!knew)
+                return -ENOMEM;
         *knew = alc880_control_templates[type];
         knew->name = kstrdup(name, GFP_KERNEL);
         if (!knew->name)
                 return -ENOMEM;
         knew->private_value = val;
-        spec->num_kctl_used++;
         return 0;
 }
 
@@ -3789,8 +3783,8 @@ static int alc880_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = ALC880_DIGIN_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++] = alc880_volume_init_verbs;
 
@@ -5177,7 +5171,7 @@ static int alc260_parse_auto_config(struct hda_codec *codec)
         err = alc260_auto_create_multi_out_ctls(spec, &spec->autocfg);
         if (err < 0)
                 return err;
-        if (!spec->kctl_alloc)
+        if (!spec->kctls.list)
                 return 0; /* can't find valid BIOS pin config */
         err = alc260_auto_create_analog_input_ctls(spec, &spec->autocfg);
         if (err < 0)
@@ -5187,8 +5181,8 @@ static int alc260_parse_auto_config(struct hda_codec *codec)
 
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC260_DIGOUT_NID;
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++] = alc260_volume_init_verbs;
 
@@ -10256,8 +10250,8 @@ static int alc262_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = ALC262_DIGIN_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++] = alc262_volume_init_verbs;
         spec->num_mux_defs = 1;
@@ -11387,8 +11381,8 @@ static int alc268_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC268_DIGOUT_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         if (spec->autocfg.speaker_pins[0] != 0x1d)
                 spec->mixers[spec->num_mixers++] = alc268_beep_mixer;
@@ -12159,8 +12153,8 @@ static int alc269_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC269_DIGOUT_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         /* create a beep mixer control if the pin 0x1d isn't assigned */
         for (i = 0; i < ARRAY_SIZE(spec->autocfg.input_pins); i++)
@@ -13257,8 +13251,8 @@ static int alc861_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC861_DIGOUT_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++] = alc861_auto_init_verbs;
 
@@ -14368,8 +14362,8 @@ static int alc861vd_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC861VD_DIGOUT_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_init_verbs++]
                 = alc861vd_volume_init_verbs;
@@ -16194,8 +16188,8 @@ static int alc662_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_out_pin)
                 spec->multiout.dig_out_nid = ALC880_DIGOUT_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->num_mux_defs = 1;
         spec->input_mux = &spec->private_imux;
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index c59065513118..3db39adad79a 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -35,7 +35,6 @@
 #include "hda_patch.h"
 #include "hda_beep.h"
 
-#define NUM_CONTROL_ALLOC       32
 #define STAC_PWR_EVENT          0x20
 #define STAC_HP_EVENT           0x30
 #define STAC_VREF_EVENT         0x40
@@ -218,8 +217,7 @@ struct sigmatel_spec {
 
         /* dynamic controls and input_mux */
         struct auto_pin_cfg autocfg;
-        unsigned int num_kctl_alloc, num_kctl_used;
-        struct snd_kcontrol_new *kctl_alloc;
+        struct snd_array kctls;
         struct hda_input_mux private_dimux;
         struct hda_input_mux private_imux;
         struct hda_input_mux private_smux;
@@ -1233,6 +1231,8 @@ static const char *slave_sws[] = {
         NULL
 };
 
+static void stac92xx_free_kctls(struct hda_codec *codec);
+
 static int stac92xx_build_controls(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec = codec->spec;
@@ -1305,6 +1305,7 @@ static int stac92xx_build_controls(struct hda_codec *codec)
                         return err;
         }
 
+        stac92xx_free_kctls(codec); /* no longer needed */
         return 0;       
 }
 
@@ -2592,28 +2593,16 @@ static int stac92xx_add_control_idx(struct sigmatel_spec *spec, int type,
 {
         struct snd_kcontrol_new *knew;
 
-        if (spec->num_kctl_used >= spec->num_kctl_alloc) {
-                int num = spec->num_kctl_alloc + NUM_CONTROL_ALLOC;
-
-                knew = kcalloc(num + 1, sizeof(*knew), GFP_KERNEL); /* array + terminator */
-                if (! knew)
-                        return -ENOMEM;
-                if (spec->kctl_alloc) {
-                        memcpy(knew, spec->kctl_alloc, sizeof(*knew) * spec->num_kctl_alloc);
-                        kfree(spec->kctl_alloc);
-                }
-                spec->kctl_alloc = knew;
-                spec->num_kctl_alloc = num;
-        }
-
-        knew = &spec->kctl_alloc[spec->num_kctl_used];
+        snd_array_init(&spec->kctls, sizeof(*knew), 32);
+        knew = snd_array_new(&spec->kctls);
+        if (!knew)
+                return -ENOMEM;
         *knew = stac92xx_control_templates[type];
         knew->index = idx;
         knew->name = kstrdup(name, GFP_KERNEL);
         if (! knew->name)
                 return -ENOMEM;
         knew->private_value = val;
-        spec->num_kctl_used++;
         return 0;
 }
 
@@ -3434,8 +3423,8 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
         if (dig_in && spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = dig_in;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux;
         spec->dinput_mux = &spec->private_dimux;
@@ -3536,8 +3525,8 @@ static int stac9200_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = 0x04;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux;
         spec->dinput_mux = &spec->private_dimux;
@@ -3698,20 +3687,26 @@ static int stac92xx_init(struct hda_codec *codec)
         return 0;
 }
 
+static void stac92xx_free_kctls(struct hda_codec *codec)
+{
+        struct sigmatel_spec *spec = codec->spec;
+
+        if (spec->kctls.list) {
+                struct snd_kcontrol_new *kctl = spec->kctls.list;
+                int i;
+                for (i = 0; i < spec->kctls.used; i++)
+                        kfree(kctl[i].name);
+        }
+        snd_array_free(&spec->kctls);
+}
+
 static void stac92xx_free(struct hda_codec *codec)
 {
         struct sigmatel_spec *spec = codec->spec;
-        int i;
 
         if (! spec)
                 return;
 
-        if (spec->kctl_alloc) {
-                for (i = 0; i < spec->num_kctl_used; i++)
-                        kfree(spec->kctl_alloc[i].name);
-                kfree(spec->kctl_alloc);
-        }
-
         if (spec->bios_pin_configs)
                 kfree(spec->bios_pin_configs);
 
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 63e4871e5d8f..760e14ae3bff 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -53,9 +53,6 @@
 #define AMP_VAL_IDX_SHIFT       19
 #define AMP_VAL_IDX_MASK        (0x0f<<19)
 
-#define NUM_CONTROL_ALLOC       32
-#define NUM_VERB_ALLOC          32
-
 /* Pin Widget NID */
 #define VT1708_HP_NID           0x13
 #define VT1708_DIGOUT_NID       0x14
@@ -227,8 +224,7 @@ struct via_spec {
 
         /* dynamic controls, init_verbs and input_mux */
         struct auto_pin_cfg autocfg;
-        unsigned int num_kctl_alloc, num_kctl_used;
-        struct snd_kcontrol_new *kctl_alloc;
+        struct snd_array kctls;
         struct hda_input_mux private_imux[2];
         hda_nid_t private_dac_nids[AUTO_CFG_MAX_OUTS];
 
@@ -272,33 +268,31 @@ static int via_add_control(struct via_spec *spec, int type, const char *name,
 {
         struct snd_kcontrol_new *knew;
 
-        if (spec->num_kctl_used >= spec->num_kctl_alloc) {
-                int num = spec->num_kctl_alloc + NUM_CONTROL_ALLOC;
-
-                /* array + terminator */
-                knew = kcalloc(num + 1, sizeof(*knew), GFP_KERNEL);
-                if (!knew)
-                        return -ENOMEM;
-                if (spec->kctl_alloc) {
-                        memcpy(knew, spec->kctl_alloc,
-                               sizeof(*knew) * spec->num_kctl_alloc);
-                        kfree(spec->kctl_alloc);
-                }
-                spec->kctl_alloc = knew;
-                spec->num_kctl_alloc = num;
-        }
-
-        knew = &spec->kctl_alloc[spec->num_kctl_used];
+        snd_array_init(&spec->kctls, sizeof(*knew), 32);
+        knew = snd_array_new(&spec->kctls);
+        if (!knew)
+                return -ENOMEM;
         *knew = vt1708_control_templates[type];
         knew->name = kstrdup(name, GFP_KERNEL);
-
         if (!knew->name)
                 return -ENOMEM;
         knew->private_value = val;
-        spec->num_kctl_used++;
         return 0;
 }
 
+static void via_free_kctls(struct hda_codec *codec)
+{
+        struct via_spec *spec = codec->spec;
+
+        if (spec->kctls.list) {
+                struct snd_kcontrol_new *kctl = spec->kctls.list;
+                int i;
+                for (i = 0; i < spec->kctls.used; i++)
+                        kfree(kctl[i].name);
+        }
+        snd_array_free(&spec->kctls);
+}
+
 /* create input playback/capture controls for the given pin */
 static int via_new_analog_input(struct via_spec *spec, hda_nid_t pin,
                                 const char *ctlname, int idx, int mix_nid)
@@ -896,6 +890,7 @@ static int via_build_controls(struct hda_codec *codec)
                 if (err < 0)
                         return err;
         }
+        via_free_kctls(codec); /* no longer needed */
         return 0;
 }
 
@@ -941,17 +936,11 @@ static int via_build_pcms(struct hda_codec *codec)
 static void via_free(struct hda_codec *codec)
 {
         struct via_spec *spec = codec->spec;
-        unsigned int i;
 
         if (!spec)
                 return;
 
-        if (spec->kctl_alloc) {
-                for (i = 0; i < spec->num_kctl_used; i++)
-                        kfree(spec->kctl_alloc[i].name);
-                kfree(spec->kctl_alloc);
-        }
-
+        via_free_kctls(codec);
         kfree(codec->spec);
 }
 
@@ -1373,8 +1362,8 @@ static int vt1708_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = VT1708_DIGIN_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->init_verbs[spec->num_iverbs++] = vt1708_volume_init_verbs;
 
@@ -1846,8 +1835,8 @@ static int vt1709_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = VT1709_DIGIN_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux[0];
 
@@ -2390,8 +2379,8 @@ static int vt1708B_parse_auto_config(struct hda_codec *codec)
         if (spec->autocfg.dig_in_pin)
                 spec->dig_in_nid = VT1708B_DIGIN_NID;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux[0];
 
@@ -2855,8 +2844,8 @@ static int vt1708S_parse_auto_config(struct hda_codec *codec)
 
         spec->extra_dig_out_nid = 0x15;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux[0];
 
@@ -3174,8 +3163,8 @@ static int vt1702_parse_auto_config(struct hda_codec *codec)
 
         spec->extra_dig_out_nid = 0x1B;
 
-        if (spec->kctl_alloc)
-                spec->mixers[spec->num_mixers++] = spec->kctl_alloc;
+        if (spec->kctls.list)
+                spec->mixers[spec->num_mixers++] = spec->kctls.list;
 
         spec->input_mux = &spec->private_imux[0];