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asoc: Add null check for kctl private_data in volume controls

Browse source 
In platform driver volume controls, add null check
for kctl private data before access.

CRs-Fixed: 2611397
Change-Id: I49bdac2bb780a7116e54c20bf5f0d01f13a53165
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
This commit is contained in:
Laxminath Kasam 2020-01-30 19:07:58 +05:30 • committed by Gerrit - the friendly Code Review server
commit 748a29b92c
3 changed files with 18 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

8
asoc/msm-pcm-loopback-v2.c
View file

@ -569,11 +569,15 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
{
int rc = 0;
struct snd_pcm_volume *vol = snd_kcontrol_chip(kcontrol);
struct snd_pcm_substream *substream =
vol->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
struct snd_pcm_substream *substream = NULL;
struct msm_pcm_loopback *prtd;
pr_debug("%s\n", __func__);
if (!vol) {
pr_err("%s: vol is NULL\n", __func__);
return -ENODEV;
}
substream = vol->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
if ((!substream) || (!substream->runtime)) {
pr_debug("%s substream or runtime not found\n", __func__);
rc = -ENODEV;

8
asoc/msm-pcm-q6-noirq.c
View file

@ -722,13 +722,17 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
{
struct snd_pcm_volume *vol = snd_kcontrol_chip(kcontrol);
struct msm_plat_data *pdata = NULL;
struct snd_pcm_substream *substream =
vol->pcm->streams[vol->stream].substream;
struct snd_pcm_substream *substream = NULL;
struct snd_soc_pcm_runtime *soc_prtd = NULL;
struct snd_soc_component *component = NULL;
struct msm_audio *prtd;
pr_debug("%s\n", __func__);
if (!vol) {
pr_err("%s: vol is NULL\n", __func__);
return -ENODEV;
}
substream = vol->pcm->streams[vol->stream].substream;
if (!substream) {
pr_err("%s substream not found\n", __func__);
return -ENODEV;

8
asoc/msm-pcm-q6-v2.c
View file

@ -1520,13 +1520,17 @@ static int msm_pcm_volume_ctl_get(struct snd_kcontrol *kcontrol,
{
struct snd_pcm_volume *vol = snd_kcontrol_chip(kcontrol);
struct msm_plat_data *pdata = NULL;
struct snd_pcm_substream *substream =
vol->pcm->streams[vol->stream].substream;
struct snd_pcm_substream *substream = NULL;
struct snd_soc_pcm_runtime *soc_prtd = NULL;
struct snd_soc_component *component = NULL;
struct msm_audio *prtd;
pr_debug("%s\n", __func__);
if (!vol) {
pr_err("%s: vol is NULL\n", __func__);
return -ENODEV;
}
substream = vol->pcm->streams[vol->stream].substream;
if (!substream) {
pr_err("%s substream not found\n", __func__);
return -ENODEV;