[PATCH -next] pwm: meson: Fix missing spin_lock_init()

[PATCH -next] pwm: meson: Fix missing spin_lock_init()

[Wei Yongjun]

From: Wei Yongjun <weiyongjun1@huawei.com>

The driver allocates the spinlock but not initialize it.
Use spin_lock_init() on it to initialize it correctly.

This is detected by Coccinelle semantic patch.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/pwm/pwm-meson.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index bfbbe7f..778d088 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -465,6 +465,7 @@ static int meson_pwm_probe(struct platform_device *pdev)
 	if (IS_ERR(meson->base))
 		return PTR_ERR(meson->base);
 
+	spin_lock_init(&meson->lock);
 	meson->chip.dev = &pdev->dev;
 	meson->chip.ops = &meson_pwm_ops;
 	meson->chip.base = -1;

[PATCH -next] pwm: meson: Fix missing spin_lock_init()

[Neil Armstrong]

Le 10/09/2016 08:38, Wei Yongjun a ?crit :
> From: Wei Yongjun <weiyongjun1@huawei.com>
> 
> The driver allocates the spinlock but not initialize it.
> Use spin_lock_init() on it to initialize it correctly.
> 
> This is detected by Coccinelle semantic patch.
> 
> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
> ---
>  drivers/pwm/pwm-meson.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
> index bfbbe7f..778d088 100644
> --- a/drivers/pwm/pwm-meson.c
> +++ b/drivers/pwm/pwm-meson.c
> @@ -465,6 +465,7 @@ static int meson_pwm_probe(struct platform_device *pdev)
>  	if (IS_ERR(meson->base))
>  		return PTR_ERR(meson->base);
>  
> +	spin_lock_init(&meson->lock);
>  	meson->chip.dev = &pdev->dev;
>  	meson->chip.ops = &meson_pwm_ops;
>  	meson->chip.base = -1;
> 

Thanks for the fix, but it was already posted earlier by Axel Lin <axel.lin@ingics.com>

Thierry will decide which one to merge.

Acked-by: Neil Armstrong <narmstrong@baylibre.com>

Thanks,
Neil

[PATCH -next] pwm: meson: Fix missing spin_lock_init()

[Thierry Reding]

On Sat, Sep 10, 2016 at 03:54:11PM +0200, Neil Armstrong wrote:
> Le 10/09/2016 08:38, Wei Yongjun a ?crit :
> > From: Wei Yongjun <weiyongjun1@huawei.com>
> > 
> > The driver allocates the spinlock but not initialize it.
> > Use spin_lock_init() on it to initialize it correctly.
> > 
> > This is detected by Coccinelle semantic patch.
> > 
> > Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
> > ---
> >  drivers/pwm/pwm-meson.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
> > index bfbbe7f..778d088 100644
> > --- a/drivers/pwm/pwm-meson.c
> > +++ b/drivers/pwm/pwm-meson.c
> > @@ -465,6 +465,7 @@ static int meson_pwm_probe(struct platform_device *pdev)
> >  	if (IS_ERR(meson->base))
> >  		return PTR_ERR(meson->base);
> >  
> > +	spin_lock_init(&meson->lock);
> >  	meson->chip.dev = &pdev->dev;
> >  	meson->chip.ops = &meson_pwm_ops;
> >  	meson->chip.base = -1;
> > 
> 
> Thanks for the fix, but it was already posted earlier by Axel Lin <axel.lin@ingics.com>
> 
> Thierry will decide which one to merge.
> 
> Acked-by: Neil Armstrong <narmstrong@baylibre.com>

I've applied Axel's patch.

Thanks,
Thierry
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