linux-kernel - Re: [PATCH 05/11] irqchip: bcm7120-l2: Make sure all register accesses use base+offset

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Date:	Wed, 29 Oct 2014 09:53:56 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Kevin Cernekee <cernekee@...il.com>, tglx@...utronix.de,
	jason@...edaemon.net, ralf@...ux-mips.org
CC:	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	mbizon@...ebox.fr, jogo@...nwrt.org, linux-mips@...ux-mips.org
Subject: Re: [PATCH 05/11] irqchip: bcm7120-l2: Make sure all register accesses
 use base+offset

On 10/28/2014 08:58 PM, Kevin Cernekee wrote:
> A couple of accesses to IRQEN (base+0x00) just used "base" directly, so
> they would break if IRQEN ever became nonzero.  Make sure that all
> reads/writes specify the register offset constant.
> 
> Signed-off-by: Kevin Cernekee <cernekee@...il.com>

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

> ---
>  drivers/irqchip/irq-bcm7120-l2.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/irqchip/irq-bcm7120-l2.c b/drivers/irqchip/irq-bcm7120-l2.c
> index 49d8f3d..6472b71 100644
> --- a/drivers/irqchip/irq-bcm7120-l2.c
> +++ b/drivers/irqchip/irq-bcm7120-l2.c
> @@ -66,10 +66,10 @@ static void bcm7120_l2_intc_suspend(struct irq_data *d)
>  
>  	irq_gc_lock(gc);
>  	/* Save the current mask and the interrupt forward mask */
> -	b->saved_mask = __raw_readl(b->base) | b->irq_fwd_mask;
> +	b->saved_mask = __raw_readl(b->base + IRQEN) | b->irq_fwd_mask;
>  	if (b->can_wake) {
>  		reg = b->saved_mask | gc->wake_active;
> -		__raw_writel(reg, b->base);
> +		__raw_writel(reg, b->base + IRQEN);
>  	}
>  	irq_gc_unlock(gc);
>  }
> @@ -81,7 +81,7 @@ static void bcm7120_l2_intc_resume(struct irq_data *d)
>  
>  	/* Restore the saved mask */
>  	irq_gc_lock(gc);
> -	__raw_writel(b->saved_mask, b->base);
> +	__raw_writel(b->saved_mask, b->base + IRQEN);
>  	irq_gc_unlock(gc);
>  }
>  
> 

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