From 960a581e22d93a784db843110ad1e6249c1542a5 Mon Sep 17 00:00:00 2001 From: Libin Yang Date: Thu, 16 Jun 2016 11:13:25 +0800 Subject: ALSA: hda: fix some klockwork scan warnings This patch fixes some warnings from klockwork. These warnings are not the real issues. The patch adds the sanity check. Signed-off-by: Libin Yang Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 8 +++++++- sound/pci/hda/patch_hdmi.c | 5 +++++ 2 files changed, 12 insertions(+), 1 deletion(-) (limited to 'sound/pci') diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 83741887faa1..9913be8532ab 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3584,6 +3584,12 @@ static void setup_dig_out_stream(struct hda_codec *codec, hda_nid_t nid, bool reset; spdif = snd_hda_spdif_out_of_nid(codec, nid); + /* Add sanity check to pass klockwork check. + * This should never happen. + */ + if (WARN_ON(spdif == NULL)) + return; + curr_fmt = snd_hda_codec_read(codec, nid, 0, AC_VERB_GET_STREAM_FORMAT, 0); reset = codec->spdif_status_reset && @@ -3768,7 +3774,7 @@ int snd_hda_multi_out_analog_prepare(struct hda_codec *codec, spdif = snd_hda_spdif_out_of_nid(codec, mout->dig_out_nid); if (mout->dig_out_nid && mout->share_spdif && mout->dig_out_used != HDA_DIG_EXCLUSIVE) { - if (chs == 2 && + if (chs == 2 && spdif != NULL && snd_hda_is_supported_format(codec, mout->dig_out_nid, format) && !(spdif->status & IEC958_AES0_NONAUDIO)) { diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index d0d5ad8beac5..56e5204ac9c1 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -1680,6 +1680,11 @@ static bool check_non_pcm_per_cvt(struct hda_codec *codec, hda_nid_t cvt_nid) mutex_lock(&codec->spdif_mutex); spdif = snd_hda_spdif_out_of_nid(codec, cvt_nid); + /* Add sanity check to pass klockwork check. + * This should never happen. + */ + if (WARN_ON(spdif == NULL)) + return true; non_pcm = !!(spdif->status & IEC958_AES0_NONAUDIO); mutex_unlock(&codec->spdif_mutex); return non_pcm; -- cgit v1.2.3-58-ga151