Merge tag 'sound-3.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Here contains only the fixes for the new FireWire bebob driver.  All
  fairly trivial and local fixes, so safe to apply"

* tag 'sound-3.16-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: bebob: Correction for return value of special_clk_ctl_put() in error
  ALSA: bebob: Correction for return value of .put callback
  ALSA: bebob: Use different labels for digital input/output
  ALSA: bebob: Fix a missing to unlock mutex in error handling case

1 files changed, 37 insertions, 16 deletions

diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c
index 6af50eb80ea7..70faa3a32526 100644
--- a/sound/firewire/bebob/bebob_maudio.c
+++ b/sound/firewire/bebob/bebob_maudio.c
@@ -379,11 +379,11 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl,
         struct special_params *params = bebob->maudio_special_quirk;
         int err, id;
 
-        mutex_lock(&bebob->mutex);
-
         id = uval->value.enumerated.item[0];
         if (id >= ARRAY_SIZE(special_clk_labels))
-                return 0;
+                return -EINVAL;
+
+        mutex_lock(&bebob->mutex);
 
         err = avc_maudio_set_special_clk(bebob, id,
                                          params->dig_in_fmt,
@@ -391,7 +391,10 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl,
                                          params->clk_lock);
         mutex_unlock(&bebob->mutex);
 
-        return err >= 0;
+        if (err >= 0)
+                err = 1;
+
+        return err;
 }
 static struct snd_kcontrol_new special_clk_ctl = {
         .name   = "Clock Source",
@@ -434,8 +437,8 @@ static struct snd_kcontrol_new special_sync_ctl = {
         .get    = special_sync_ctl_get,
 };
 
-/* Digital interface control for special firmware */
-static char *const special_dig_iface_labels[] = {
+/* Digital input interface control for special firmware */
+static char *const special_dig_in_iface_labels[] = {
         "S/PDIF Optical", "S/PDIF Coaxial", "ADAT Optical"
 };
 static int special_dig_in_iface_ctl_info(struct snd_kcontrol *kctl,
@@ -443,13 +446,13 @@ static int special_dig_in_iface_ctl_info(struct snd_kcontrol *kctl,
 {
         einf->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
         einf->count = 1;
-        einf->value.enumerated.items = ARRAY_SIZE(special_dig_iface_labels);
+        einf->value.enumerated.items = ARRAY_SIZE(special_dig_in_iface_labels);
 
         if (einf->value.enumerated.item >= einf->value.enumerated.items)
                 einf->value.enumerated.item = einf->value.enumerated.items - 1;
 
         strcpy(einf->value.enumerated.name,
-               special_dig_iface_labels[einf->value.enumerated.item]);
+               special_dig_in_iface_labels[einf->value.enumerated.item]);
 
         return 0;
 }
@@ -491,26 +494,36 @@ static int special_dig_in_iface_ctl_set(struct snd_kcontrol *kctl,
         unsigned int id, dig_in_fmt, dig_in_iface;
         int err;
 
-        mutex_lock(&bebob->mutex);
-
         id = uval->value.enumerated.item[0];
+        if (id >= ARRAY_SIZE(special_dig_in_iface_labels))
+                return -EINVAL;
 
         /* decode user value */
         dig_in_fmt = (id >> 1) & 0x01;
         dig_in_iface = id & 0x01;
 
+        mutex_lock(&bebob->mutex);
+
         err = avc_maudio_set_special_clk(bebob,
                                          params->clk_src,
                                          dig_in_fmt,
                                          params->dig_out_fmt,
                                          params->clk_lock);
-        if ((err < 0) || (params->dig_in_fmt > 0)) /* ADAT */
+        if (err < 0)
+                goto end;
+
+        /* For ADAT, optical interface is only available. */
+        if (params->dig_in_fmt > 0) {
+                err = 1;
                 goto end;
+        }
 
+        /* For S/PDIF, optical/coaxial interfaces are selectable. */
         err = avc_audio_set_selector(bebob->unit, 0x00, 0x04, dig_in_iface);
         if (err < 0)
                 dev_err(&bebob->unit->device,
                         "fail to set digital input interface: %d\n", err);
+        err = 1;
 end:
         special_stream_formation_set(bebob);
         mutex_unlock(&bebob->mutex);
@@ -525,18 +538,22 @@ static struct snd_kcontrol_new special_dig_in_iface_ctl = {
         .put    = special_dig_in_iface_ctl_set
 };
 
+/* Digital output interface control for special firmware */
+static char *const special_dig_out_iface_labels[] = {
+        "S/PDIF Optical and Coaxial", "ADAT Optical"
+};
 static int special_dig_out_iface_ctl_info(struct snd_kcontrol *kctl,
                                           struct snd_ctl_elem_info *einf)
 {
         einf->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
         einf->count = 1;
-        einf->value.enumerated.items = ARRAY_SIZE(special_dig_iface_labels) - 1;
+        einf->value.enumerated.items = ARRAY_SIZE(special_dig_out_iface_labels);
 
         if (einf->value.enumerated.item >= einf->value.enumerated.items)
                 einf->value.enumerated.item = einf->value.enumerated.items - 1;
 
         strcpy(einf->value.enumerated.name,
-               special_dig_iface_labels[einf->value.enumerated.item + 1]);
+               special_dig_out_iface_labels[einf->value.enumerated.item]);
 
         return 0;
 }
@@ -558,16 +575,20 @@ static int special_dig_out_iface_ctl_set(struct snd_kcontrol *kctl,
         unsigned int id;
         int err;
 
-        mutex_lock(&bebob->mutex);
-
         id = uval->value.enumerated.item[0];
+        if (id >= ARRAY_SIZE(special_dig_out_iface_labels))
+                return -EINVAL;
+
+        mutex_lock(&bebob->mutex);
 
         err = avc_maudio_set_special_clk(bebob,
                                          params->clk_src,
                                          params->dig_in_fmt,
                                          id, params->clk_lock);
-        if (err >= 0)
+        if (err >= 0) {
                 special_stream_formation_set(bebob);
+                err = 1;
+        }
 
         mutex_unlock(&bebob->mutex);
         return err;