[ALSA] hda-codec - Don't query widget parameter for invalid NID
Don't query a widget parameter for an invalid NID in get_wcaps() but rather returns zero (i.e. no attribute). The read to an non-existing widget may result in a fatal codec communication error. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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@ -370,7 +370,7 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid)
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{
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if (nid < codec->start_nid ||
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nid >= codec->start_nid + codec->num_nodes)
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return snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP);
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return 0;
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return codec->wcaps[nid - codec->start_nid];
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}
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