Re: [PATCH 2/2] watchdog: convert to DEFINE_SHOW_ATTRIBUTE

[Guenter Roeck <linux@xxxxxxxxxxxx>]

On 12/1/18 6:51 AM, Yangtao Li wrote:
> Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.
>
> Signed-off-by: Yangtao Li <tiny.windzz@xxxxxxxxx>

Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>

> ---
>   drivers/watchdog/ie6xx_wdt.c | 16 +++-------------
>   1 file changed, 3 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/watchdog/ie6xx_wdt.c b/drivers/watchdog/ie6xx_wdt.c
> index 78c2541f5d52..8de9fb1ed371 100644
> --- a/drivers/watchdog/ie6xx_wdt.c
> +++ b/drivers/watchdog/ie6xx_wdt.c
> @@ -193,7 +193,7 @@ static struct watchdog_device ie6xx_wdt_dev = {
>   
>   #ifdef CONFIG_DEBUG_FS
>   
> -static int ie6xx_wdt_dbg_show(struct seq_file *s, void *unused)
> +static int ie6xx_wdt_show(struct seq_file *s, void *unused)
>   {
>   	seq_printf(s, "PV1   = 0x%08x\n",
>   		inl(ie6xx_wdt_data.sch_wdtba + PV1));
> @@ -212,23 +212,13 @@ static int ie6xx_wdt_dbg_show(struct seq_file *s, void *unused)
>   	return 0;
>   }
>   
> -static int ie6xx_wdt_dbg_open(struct inode *inode, struct file *file)
> -{
> -	return single_open(file, ie6xx_wdt_dbg_show, NULL);
> -}
> -
> -static const struct file_operations ie6xx_wdt_dbg_operations = {
> -	.open		= ie6xx_wdt_dbg_open,
> -	.read		= seq_read,
> -	.llseek		= seq_lseek,
> -	.release	= single_release,
> -};
> +DEFINE_SHOW_ATTRIBUTE(ie6xx_wdt);
>   
>   static void ie6xx_wdt_debugfs_init(void)
>   {
>   	/* /sys/kernel/debug/ie6xx_wdt */
>   	ie6xx_wdt_data.debugfs = debugfs_create_file("ie6xx_wdt",
> -		S_IFREG | S_IRUGO, NULL, NULL, &ie6xx_wdt_dbg_operations);
> +		S_IFREG | S_IRUGO, NULL, NULL, &ie6xx_wdt_fops);
>   }
>   
>   static void ie6xx_wdt_debugfs_exit(void)