linux-kernel - Re: [RFC v1 02/25] avr32, irq: Use irq_desc_get_xxx() to avoid redundant lookup of irq

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Date:	Wed, 20 May 2015 12:15:15 +0200
From:	Hans-Christian Egtvedt <egtvedt@...fundet.no>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Randy Dunlap <rdunlap@...radead.org>,
	Yinghai Lu <yinghai@...nel.org>,
	Borislav Petkov <bp@...en8.de>,
	Haavard Skinnemoen <hskinnemoen@...il.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Tony Luck <tony.luck@...el.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [RFC v1 02/25] avr32, irq: Use irq_desc_get_xxx() to avoid
 redundant lookup of irq_desc

Around Wed 20 May 2015 17:59:50 +0800 or thereabout, Jiang Liu wrote:
> Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we
> already have a pointer to corresponding irq_desc.
> 
> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>

Acked-by: Hans-Christian Egtvedt <egtvedt@...fundet.no>

> ---
>  arch/avr32/mach-at32ap/pio.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
> index 903c7d81d0d5..2583e6cc44e9 100644
> --- a/arch/avr32/mach-at32ap/pio.c
> +++ b/arch/avr32/mach-at32ap/pio.c
> @@ -286,7 +286,7 @@ static void gpio_irq_handler(unsigned irq, struct irq_desc *desc)
>  	struct pio_device	*pio = irq_desc_get_chip_data(desc);
>  	unsigned		gpio_irq;
>  
> -	gpio_irq = (unsigned) irq_get_handler_data(irq);
> +	gpio_irq = (unsigned) irq_desc_get_handler_data(desc);
>  	for (;;) {
>  		u32		isr;
>  
-- 
mvh
Hans-Christian Egtvedt
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