linux-kernel - Re: [PATCH] clocksource: kona: fix _

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Date:	Mon, 08 Dec 2014 14:37:35 -0800
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Olof Johansson <olof@...om.net>, daniel.lezcano@...aro.org,
	tglx@...utronix.de
CC:	bcm-kernel-feedback-list@...adcom.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] clocksource: kona: fix __iomem annotation

On 08/12/14 13:42, Olof Johansson wrote:
> It makes no sense to hide the __iomem annotation from the function
> that uses it, especially since it causes a sparse warning:
> 
> drivers/clocksource/bcm_kona_timer.c:118:38: warning: incorrect type in argument 1 (different address spaces)
> drivers/clocksource/bcm_kona_timer.c:118:38:    expected void *timer_base
> drivers/clocksource/bcm_kona_timer.c:118:38:    got void [noderef] <asn:2>*static [toplevel] tmr_regs
> 
> Signed-off-by: Olof Johansson <olof@...om.net>

Acked-by: Florian Fainelli <f.fainelli@...il.com>

> ---
>  drivers/clocksource/bcm_kona_timer.c |    9 ++++-----
>  1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c
> index 0595dc6..f1e33d0 100644
> --- a/drivers/clocksource/bcm_kona_timer.c
> +++ b/drivers/clocksource/bcm_kona_timer.c
> @@ -68,9 +68,8 @@ static void kona_timer_disable_and_clear(void __iomem *base)
>  }
>  
>  static void
> -kona_timer_get_counter(void *timer_base, uint32_t *msw, uint32_t *lsw)
> +kona_timer_get_counter(void __iomem *timer_base, uint32_t *msw, uint32_t *lsw)
>  {
> -	void __iomem *base = IOMEM(timer_base);
>  	int loop_limit = 4;
>  
>  	/*
> @@ -86,9 +85,9 @@ kona_timer_get_counter(void *timer_base, uint32_t *msw, uint32_t *lsw)
>  	 */
>  
>  	while (--loop_limit) {
> -		*msw = readl(base + KONA_GPTIMER_STCHI_OFFSET);
> -		*lsw = readl(base + KONA_GPTIMER_STCLO_OFFSET);
> -		if (*msw == readl(base + KONA_GPTIMER_STCHI_OFFSET))
> +		*msw = readl(timer_base + KONA_GPTIMER_STCHI_OFFSET);
> +		*lsw = readl(timer_base + KONA_GPTIMER_STCLO_OFFSET);
> +		if (*msw == readl(timer_base + KONA_GPTIMER_STCHI_OFFSET))
>  			break;
>  	}
>  	if (!loop_limit) {
> 

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