* [PATCH] sound: pci: ice1712: wm8766.c: Cleaning up uninitialized variables
@ 2014-06-01 14:02 Rickard Strandqvist
2014-06-01 16:23 ` Takashi Iwai
0 siblings, 1 reply; 2+ messages in thread
From: Rickard Strandqvist @ 2014-06-01 14:02 UTC (permalink / raw)
To: Jaroslav Kysela, Takashi Iwai
Cc: Rickard Strandqvist, alsa-devel, linux-kernel
There is a risk that the variable will be used without being initialized.
This was largely found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
---
sound/pci/ice1712/wm8766.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/pci/ice1712/wm8766.c b/sound/pci/ice1712/wm8766.c
index 21b373b..788a31c 100644
--- a/sound/pci/ice1712/wm8766.c
+++ b/sound/pci/ice1712/wm8766.c
@@ -237,7 +237,7 @@ static int snd_wm8766_ctl_get(struct snd_kcontrol *kcontrol,
{
struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
int n = kcontrol->private_value;
- u16 val1, val2;
+ u16 val1 = 0, val2 = 0;
if (wm->ctl[n].get)
wm->ctl[n].get(wm, &val1, &val2);
--
1.7.10.4
^ permalink raw reply [flat|nested] 2+ messages in thread* Re: [PATCH] sound: pci: ice1712: wm8766.c: Cleaning up uninitialized variables
2014-06-01 14:02 [PATCH] sound: pci: ice1712: wm8766.c: Cleaning up uninitialized variables Rickard Strandqvist
@ 2014-06-01 16:23 ` Takashi Iwai
0 siblings, 0 replies; 2+ messages in thread
From: Takashi Iwai @ 2014-06-01 16:23 UTC (permalink / raw)
To: Rickard Strandqvist; +Cc: Jaroslav Kysela, alsa-devel, linux-kernel
At Sun, 1 Jun 2014 16:02:51 +0200,
Rickard Strandqvist wrote:
>
> There is a risk that the variable will be used without being initialized.
>
> This was largely found by using a static code analysis program called cppcheck.
It won't happen in reality. And, initializing to some random values
isn't always received good. You can use uninitialized_var() in such a
case, too.
Takashi
>
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
> ---
> sound/pci/ice1712/wm8766.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/sound/pci/ice1712/wm8766.c b/sound/pci/ice1712/wm8766.c
> index 21b373b..788a31c 100644
> --- a/sound/pci/ice1712/wm8766.c
> +++ b/sound/pci/ice1712/wm8766.c
> @@ -237,7 +237,7 @@ static int snd_wm8766_ctl_get(struct snd_kcontrol *kcontrol,
> {
> struct snd_wm8766 *wm = snd_kcontrol_chip(kcontrol);
> int n = kcontrol->private_value;
> - u16 val1, val2;
> + u16 val1 = 0, val2 = 0;
>
> if (wm->ctl[n].get)
> wm->ctl[n].get(wm, &val1, &val2);
> --
> 1.7.10.4
>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-06-01 14:02 [PATCH] sound: pci: ice1712: wm8766.c: Cleaning up uninitialized variables Rickard Strandqvist
2014-06-01 16:23 ` Takashi Iwai
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