ALSA: hda - Return the error from get_wcaps_type() for invalid NIDs

[pandora-kernel.git] / sound / pci / hda / hda_local.h

diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h
index 6579e0f..368f0c5 100644 (file)
--- a/sound/pci/hda/hda_local.h
+++ b/sound/pci/hda/hda_local.h
@@ -487,7 +487,12 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
 }
 
 /* get the widget type from widget capability bits */
-#define get_wcaps_type(wcaps) (((wcaps) & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT)
+static inline int get_wcaps_type(unsigned int wcaps)
+{
+       if (!wcaps)
+               return -1; /* invalid type */
+       return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
+}
 
 static inline unsigned int get_wcaps_channels(u32 wcaps)
 {
@@ -653,6 +658,9 @@ struct hdmi_eld {
        int     spk_alloc;
        int     sad_count;
        struct cea_sad sad[ELD_MAX_SAD];
+       /*
+        * all fields above eld_buffer will be cleared before updating ELD
+        */
        char    eld_buffer[ELD_MAX_SIZE];
 #ifdef CONFIG_PROC_FS
        struct snd_info_entry *proc_entry;