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-rw-r--r--sound/pci/hda/patch_hdmi.c25
1 files changed, 18 insertions, 7 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 32adaa6c5627..6bcdd667f514 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -343,14 +343,16 @@ static int hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
- struct hdmi_spec *spec;
+ struct hdmi_spec *spec = codec->spec;
+ struct hdmi_eld *eld;
int pin_idx;
- spec = codec->spec;
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
pin_idx = kcontrol->private_value;
- uinfo->count = spec->pins[pin_idx].sink_eld.eld_size;
+ eld = &spec->pins[pin_idx].sink_eld;
+
+ uinfo->count = eld->eld_valid ? eld->eld_size : 0;
return 0;
}
@@ -359,14 +361,23 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
- struct hdmi_spec *spec;
+ struct hdmi_spec *spec = codec->spec;
+ struct hdmi_eld *eld;
int pin_idx;
- spec = codec->spec;
pin_idx = kcontrol->private_value;
+ eld = &spec->pins[pin_idx].sink_eld;
+
+ if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data)) {
+ snd_BUG();
+ return -EINVAL;
+ }
- memcpy(ucontrol->value.bytes.data,
- spec->pins[pin_idx].sink_eld.eld_buffer, ELD_MAX_SIZE);
+ memset(ucontrol->value.bytes.data, 0,
+ ARRAY_SIZE(ucontrol->value.bytes.data));
+ if (eld->eld_valid)
+ memcpy(ucontrol->value.bytes.data, eld->eld_buffer,
+ eld->eld_size);
return 0;
}