linux-kernel - Re: [PATCH 2/2] watchdog: pm8916

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Date:   Sun, 8 Sep 2019 15:54:07 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>,
        wim@...ux-watchdog.org
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        bjorn.andersson@...aro.org
Subject: Re: [PATCH 2/2] watchdog: pm8916_wdt: fix missing include

On 9/6/19 1:30 PM, Jorge Ramirez-Ortiz wrote:
> As per Documentation/process/submit-checklist.rst, when using  a
> facility #include the file that defines/declares  that facility.
> 
> Don't depend on other header files pulling in ones that you use.
> 

Correct, but then also don't include header files you don't use.
In this case, the include of linux/bitops.h is no longer necessary
if linux/bits.h is included since the driver doesn't really use bit
operations, only bit masks.

Guenter

> Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@...aro.org>
> ---
>   drivers/watchdog/pm8916_wdt.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/watchdog/pm8916_wdt.c b/drivers/watchdog/pm8916_wdt.c
> index cb5304c26ac3..b8d9df0f96f7 100644
> --- a/drivers/watchdog/pm8916_wdt.c
> +++ b/drivers/watchdog/pm8916_wdt.c
> @@ -1,5 +1,6 @@
>   // SPDX-License-Identifier: GPL-2.0
>   #include <linux/bitops.h>
> +#include <linux/bits.h>
>   #include <linux/interrupt.h>
>   #include <linux/kernel.h>
>   #include <linux/module.h>
>