linux-kernel - Re: [PATCH] power: bq24190_charger: suppress build warning

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Message-ID: <20150121160533.GF13715@earth.universe>
Date:	Wed, 21 Jan 2015 17:05:33 +0100
From:	Sebastian Reichel <sre@...nel.org>
To:	"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Cc:	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] power: bq24190_charger: suppress build warning

Hi,

On Thu, Dec 04, 2014 at 02:56:04PM +0000, Lad, Prabhakar wrote:
> This patch fixes following build warning:
> 
> In file included from include/linux/printk.h:261:0,
>                  from include/linux/kernel.h:13,
>                  from include/linux/list.h:8,
>                  from include/linux/module.h:9,
>                  from drivers/power/bq24190_charger.c:11:
> drivers/power/bq24190_charger.c: In function ‘bq24190_irq_handler_thread’:
> include/linux/dynamic_debug.h:86:20: warning: ‘ss_reg’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>    __dynamic_dev_dbg(&descriptor, dev, fmt, \
>                     ^
> drivers/power/bq24190_charger.c:1211:5: note: ‘ss_reg’ was declared here
>   u8 ss_reg, f_reg;
>      ^
> In file included from include/linux/printk.h:261:0,
>                  from include/linux/kernel.h:13,
>                  from include/linux/list.h:8,
>                  from include/linux/module.h:9,
>                  from drivers/power/bq24190_charger.c:11:
> include/linux/dynamic_debug.h:86:20: warning: ‘f_reg’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>    __dynamic_dev_dbg(&descriptor, dev, fmt, \
>                     ^
> drivers/power/bq24190_charger.c:1211:13: note: ‘f_reg’ was declared here
>   u8 ss_reg, f_reg;
> 
> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
> ---
>  drivers/power/bq24190_charger.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/power/bq24190_charger.c b/drivers/power/bq24190_charger.c
> index ad3ff8f..72e552d 100644
> --- a/drivers/power/bq24190_charger.c
> +++ b/drivers/power/bq24190_charger.c
> @@ -1208,7 +1208,7 @@ static irqreturn_t bq24190_irq_handler_thread(int irq, void *data)
>  {
>  	struct bq24190_dev_info *bdi = data;
>  	bool alert_userspace = false;
> -	u8 ss_reg, f_reg;
> +	u8 ss_reg = 0, f_reg = 0;
>  	int ret;
>  
>  	pm_runtime_get_sync(bdi->dev);

Thanks, applied.

-- Sebastian

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