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asoc: add null check for pcm pointer of snd_pcm_volume

Browse source 
In platform driver volume controls, add null check for
pcm pointer of struct snd_pcm_volume.

Change-Id: I511a79422eaeced6240849cbb665a289afdc5984
Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>
This commit is contained in:
xsang 2020-06-19 19:46:57 +08:00
commit b588d829ad
2 changed files with 12 additions and 0 deletions
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6
asoc/msm-pcm-q6-noirq.c
View file

@ -732,6 +732,12 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
pr_err("%s: vol is NULL\n", __func__);
return -ENODEV;
}
if (!vol->pcm) {
pr_err("%s: vol->pcm is NULL\n", __func__);
return -ENODEV;
}
substream = vol->pcm->streams[vol->stream].substream;
if (!substream) {
pr_err("%s substream not found\n", __func__);

6
asoc/msm-pcm-q6-v2.c
View file

@ -1530,6 +1530,12 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
pr_err("%s: vol is NULL\n", __func__);
return -ENODEV;
}
if (!vol->pcm) {
pr_err("%s: vol->pcm is NULL\n", __func__);
return -ENODEV;
}
substream = vol->pcm->streams[vol->stream].substream;
if (!substream) {
pr_err("%s substream not found\n", __func__);