linux-kernel - Re: [PATCH] arm: nomadik: avoid assigning u32 to bool

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Date:	Sun, 3 Apr 2011 09:28:37 +0530
From:	Rabin Vincent <rabin@....in>
To:	Nicolas Kaiser <nikai@...ai.net>
Cc:	Alessandro Rubini <rubini@...pv.it>,
	Linus Walleij <linus.walleij@...ricsson.com>,
	STEricsson <STEricsson_nomadik_linux@...t.st.com>,
	Russell King <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm: nomadik: avoid assigning u32 to bool

On Sat, Apr 2, 2011 at 03:21, Nicolas Kaiser <nikai@...ai.net> wrote:
> Avoid assigning u32 to the bool 'enabled'.
>
> Signed-off-by: Nicolas Kaiser <nikai@...ai.net>
> ---
>  arch/arm/plat-nomadik/gpio.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c
> index f49748e..8b722f7 100644
> --- a/arch/arm/plat-nomadik/gpio.c
> +++ b/arch/arm/plat-nomadik/gpio.c
> @@ -636,7 +636,7 @@ static int nmk_gpio_irq_set_type(struct irq_data *d, unsigned int type)
>        if (type & IRQ_TYPE_LEVEL_LOW)
>                return -EINVAL;
>
> -       enabled = nmk_chip->enabled & bitmask;
> +       enabled = !!(nmk_chip->enabled & bitmask);

Why?  There are dozens of places in the kernel where this done, the code
generated should be the same, and it's pretty obvious what is being done
as it is.
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