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);