linux-kernel - Re: [PATCH 15/25] drivers/net/wireless/ipw2x00: Use static const char arrays

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Message-ID: <20100914184142.GE2484@tuxdriver.com>
Date:	Tue, 14 Sep 2010 14:41:43 -0400
From:	"John W. Linville" <linville@...driver.com>
To:	Joe Perches <joe@...ches.com>
Cc:	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: [PATCH 15/25] drivers/net/wireless/ipw2x00: Use static const
 char arrays

On Mon, Sep 13, 2010 at 12:47:53PM -0700, Joe Perches wrote:
> Signed-off-by: Joe Perches <joe@...ches.com>
> ---
>  drivers/net/wireless/ipw2x00/ipw2100.c       |    2 +-
>  drivers/net/wireless/ipw2x00/ipw2200.c       |    2 +-
>  drivers/net/wireless/ipw2x00/libipw_module.c |    2 +-
>  3 files changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/wireless/ipw2x00/ipw2100.c b/drivers/net/wireless/ipw2x00/ipw2100.c
> index 61915f3..f64103c 100644
> --- a/drivers/net/wireless/ipw2x00/ipw2100.c
> +++ b/drivers/net/wireless/ipw2x00/ipw2100.c
> @@ -4261,7 +4261,7 @@ static ssize_t store_scan_age(struct device *d, struct device_attribute *attr,
>  {
>  	struct ipw2100_priv *priv = dev_get_drvdata(d);
>  	struct net_device *dev = priv->net_dev;
> -	char buffer[] = "00000000";
> +	char buffer[sizeof("00000000")];
>  	unsigned long len =
>  	    (sizeof(buffer) - 1) > count ? count : sizeof(buffer) - 1;
>  	unsigned long val;

Had to look twice, since you replaced an initialization with a
declaration.  But in all these cases the initial value was already
being overwritten before use anyway.

Acked-by: John W. Linville <linville@...driver.com>

> diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c
> index 0f25083..75e83c9 100644
> --- a/drivers/net/wireless/ipw2x00/ipw2200.c
> +++ b/drivers/net/wireless/ipw2x00/ipw2200.c
> @@ -1486,7 +1486,7 @@ static ssize_t store_scan_age(struct device *d, struct device_attribute *attr,
>  {
>  	struct ipw_priv *priv = dev_get_drvdata(d);
>  	struct net_device *dev = priv->net_dev;
> -	char buffer[] = "00000000";
> +	char buffer[sizeof("00000000")];
>  	unsigned long len =
>  	    (sizeof(buffer) - 1) > count ? count : sizeof(buffer) - 1;
>  	unsigned long val;
> diff --git a/drivers/net/wireless/ipw2x00/libipw_module.c b/drivers/net/wireless/ipw2x00/libipw_module.c
> index 32dee2c..d0c8a67 100644
> --- a/drivers/net/wireless/ipw2x00/libipw_module.c
> +++ b/drivers/net/wireless/ipw2x00/libipw_module.c
> @@ -261,7 +261,7 @@ static int debug_level_proc_open(struct inode *inode, struct file *file)
>  static ssize_t debug_level_proc_write(struct file *file,
>  		const char __user *buffer, size_t count, loff_t *pos)
>  {
> -	char buf[] = "0x00000000\n";
> +	char buf[sizeof("0x00000000\n")];
>  	size_t len = min(sizeof(buf) - 1, count);
>  	unsigned long val;
>  
> -- 
> 1.7.3.rc1
> 
> 

-- 
John W. Linville		Someday the world will need a hero, and you
linville@...driver.com			might be all we have.  Be ready.
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