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greybus: audio: fix uninitialized variable errors found by cppcheck

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Currently, if info is null, the dev_err message is dereferencing an
uninitialized module pointer.  Instead, it should use codec->dev pointer
in dev_err call and better align with other err msg in this function.

Also, ret variable might be used uninitialized in a specific case.
Avoid using it this way.

Found using static analysis with cppcheck:
Checking drivers/staging/greybus/audio_topology.c...
[drivers/staging/greybus/audio_topology.c:175]: (error) Uninitialized
variable: module
[drivers/staging/greybus/audio_topology.c:495]: (error) Uninitialized
variable: ret

Reported-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vaibhav Agarwal 2016-09-24 23:06:26 +05:30 committed by Greg Kroah-Hartman
parent dc258c15ea
commit 7224a2a50a
1 changed files with 3 additions and 2 deletions
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5
drivers/staging/greybus/audio_topology.c
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@ -172,7 +172,7 @@ static int gbcodec_mixer_ctl_info(struct snd_kcontrol *kcontrol,
info = (struct gb_audio_ctl_elem_info *)data->info;
if (!info) {
dev_err(module->dev, "NULL info for %s\n", uinfo->id.name);
dev_err(codec->dev, "NULL info for %s\n", uinfo->id.name);
return -EINVAL;
}
@ -489,10 +489,11 @@ static int gbcodec_mixer_dapm_ctl_put(struct snd_kcontrol *kcontrol,
dev_err_ratelimited(codec->dev,
"%d:Error in %s for %s\n", ret,
__func__, kcontrol->id.name);
return ret;
}
}
return ret;
return 0;
}
#define SOC_DAPM_MIXER_GB(xname, kcount, data) \