From dca008f367586f73bd1c766836e4f7a38ce9814f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 22 Jan 2008 15:37:13 +0100 Subject: [PATCH] [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 Signed-off-by: Jaroslav Kysela --- sound/pci/hda/hda_local.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index ddc61a1d1153..448c4ce816c3 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -370,7 +370,7 @@ static inline u32 get_wcaps(struct hda_codec *codec, hda_nid_t nid) { if (nid < codec->start_nid || nid >= codec->start_nid + codec->num_nodes) - return snd_hda_param_read(codec, nid, AC_PAR_AUDIO_WIDGET_CAP); + return 0; return codec->wcaps[nid - codec->start_nid]; } -- 2.20.1