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Diffstat (limited to 'sound/hda/hdac_i915.c')
-rw-r--r--sound/hda/hdac_i915.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/sound/hda/hdac_i915.c b/sound/hda/hdac_i915.c
index f6854dbd7d8d..fb96aead8257 100644
--- a/sound/hda/hdac_i915.c
+++ b/sound/hda/hdac_i915.c
@@ -126,6 +126,8 @@ EXPORT_SYMBOL_GPL(snd_hdac_get_display_clk);
*/
static int pin2port(hda_nid_t pin_nid)
{
+ if (WARN_ON(pin_nid < 5 || pin_nid > 7))
+ return -1;
return pin_nid - 4;
}
@@ -144,10 +146,14 @@ static int pin2port(hda_nid_t pin_nid)
int snd_hdac_sync_audio_rate(struct hdac_bus *bus, hda_nid_t nid, int rate)
{
struct i915_audio_component *acomp = bus->audio_component;
+ int port;
if (!acomp || !acomp->ops || !acomp->ops->sync_audio_rate)
return -ENODEV;
- return acomp->ops->sync_audio_rate(acomp->dev, pin2port(nid), rate);
+ port = pin2port(nid);
+ if (port < 0)
+ return -EINVAL;
+ return acomp->ops->sync_audio_rate(acomp->dev, port, rate);
}
EXPORT_SYMBOL_GPL(snd_hdac_sync_audio_rate);
@@ -175,11 +181,15 @@ int snd_hdac_acomp_get_eld(struct hdac_bus *bus, hda_nid_t nid,
bool *audio_enabled, char *buffer, int max_bytes)
{
struct i915_audio_component *acomp = bus->audio_component;
+ int port;
if (!acomp || !acomp->ops || !acomp->ops->get_eld)
return -ENODEV;
- return acomp->ops->get_eld(acomp->dev, pin2port(nid), audio_enabled,
+ port = pin2port(nid);
+ if (port < 0)
+ return -EINVAL;
+ return acomp->ops->get_eld(acomp->dev, port, audio_enabled,
buffer, max_bytes);
}
EXPORT_SYMBOL_GPL(snd_hdac_acomp_get_eld);