ASoC: topology: Only free TLV for volume mixers of a widget

This patch will check the type of embedded controls for a widget, and
only free the TLV of volume mixers. Bytes controls don't have TLV.

Just free the private value which is used as struct soc_mixer_control
for volume mixers or soc_bytes_ext for bytes controls. No need to cast
to these types before freeing it.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/include/sound/soc-topology.h b/include/sound/soc-topology.h
index b897b9d..f9cc7b9 100644 (file)
--- a/include/sound/soc-topology.h
+++ b/include/sound/soc-topology.h
@@ -53,7 +53,7 @@ struct snd_soc_dobj_control {
 
 /* dynamic widget object */
 struct snd_soc_dobj_widget {
-       unsigned int kcontrol_enum:1;   /* this widget is an enum kcontrol */
+       unsigned int kcontrol_type;     /* kcontrol type: mixer, enum, bytes */
 };
 
 /* generic dynamic object - all dynamic objects belong to this struct */

diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c
index 63e1a50..11feb19 100644 (file)
--- a/sound/soc/soc-topology.c
+++ b/sound/soc/soc-topology.c
@@ -489,7 +489,7 @@ static void remove_widget(struct snd_soc_component *comp,
         * Dynamic Widgets either have 1..N enum kcontrols or mixers.
         * The enum may either have an array of values or strings.
         */
-       if (dobj->widget.kcontrol_enum) {
+       if (dobj->widget.kcontrol_type == SND_SOC_TPLG_TYPE_ENUM) {
                /* enumerated widget mixer */
                for (i = 0; i < w->num_kcontrols; i++) {
                        struct snd_kcontrol *kcontrol = w->kcontrols[i];
@@ -506,16 +506,21 @@ static void remove_widget(struct snd_soc_component *comp,
                }
                kfree(w->kcontrol_news);
        } else {
-               /* non enumerated widget mixer */
+               /* volume mixer or bytes controls */
                for (i = 0; i < w->num_kcontrols; i++) {
                        struct snd_kcontrol *kcontrol = w->kcontrols[i];
-                       struct soc_mixer_control *sm =
-                       (struct soc_mixer_control *) kcontrol->private_value;
 
-                       kfree(w->kcontrols[i]->tlv.p);
+                       if (dobj->widget.kcontrol_type
+                           == SND_SOC_TPLG_TYPE_MIXER)
+                               kfree(kcontrol->tlv.p);
 
-                       snd_ctl_remove(card, w->kcontrols[i]);
-                       kfree(sm);
+                       snd_ctl_remove(card, kcontrol);
+
+                       /* Private value is used as struct soc_mixer_control
+                        * for volume mixers or soc_bytes_ext for bytes
+                        * controls.
+                        */
+                       kfree((void *)kcontrol->private_value);
                }
                kfree(w->kcontrol_news);
        }
@@ -1439,6 +1444,7 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
        struct snd_soc_dapm_widget template, *widget;
        struct snd_soc_tplg_ctl_hdr *control_hdr;
        struct snd_soc_card *card = tplg->comp->card;
+       unsigned int kcontrol_type;
        int ret = 0;
 
        if (strnlen(w->name, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) ==
@@ -1494,6 +1500,7 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
        case SND_SOC_TPLG_CTL_VOLSW_XR_SX:
        case SND_SOC_TPLG_CTL_RANGE:
        case SND_SOC_TPLG_DAPM_CTL_VOLSW:
+               kcontrol_type = SND_SOC_TPLG_TYPE_MIXER;  /* volume mixer */
                template.num_kcontrols = w->num_kcontrols;
                template.kcontrol_news =
                        soc_tplg_dapm_widget_dmixer_create(tplg,
@@ -1508,7 +1515,7 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
        case SND_SOC_TPLG_DAPM_CTL_ENUM_DOUBLE:
        case SND_SOC_TPLG_DAPM_CTL_ENUM_VIRT:
        case SND_SOC_TPLG_DAPM_CTL_ENUM_VALUE:
-               template.dobj.widget.kcontrol_enum = 1;
+               kcontrol_type = SND_SOC_TPLG_TYPE_ENUM; /* enumerated mixer */
                template.num_kcontrols = w->num_kcontrols;
                template.kcontrol_news =
                        soc_tplg_dapm_widget_denum_create(tplg,
@@ -1519,6 +1526,7 @@ static int soc_tplg_dapm_widget_create(struct soc_tplg *tplg,
                }
                break;
        case SND_SOC_TPLG_CTL_BYTES:
+               kcontrol_type = SND_SOC_TPLG_TYPE_BYTES; /* bytes control */
                template.num_kcontrols = w->num_kcontrols;
                template.kcontrol_news =
                        soc_tplg_dapm_widget_dbytes_create(tplg,
@@ -1555,6 +1563,7 @@ widget:
        }
 
        widget->dobj.type = SND_SOC_DOBJ_WIDGET;
+       widget->dobj.widget.kcontrol_type = kcontrol_type;
        widget->dobj.ops = tplg->ops;
        widget->dobj.index = tplg->index;
        kfree(template.sname);