linux-kernel - Re: [PATCH 03/17] irqchip: irq-armada-370-xp: use proper return value for ->set

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Message-ID: <5457B940.2030105@free-electrons.com>
Date:	Mon, 03 Nov 2014 18:20:00 +0100
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Jason Cooper <jason@...edaemon.net>,
	Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>
CC:	linux-arm-kernel@...ts.infradead.org,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>,
	Lior Amsalem <alior@...vell.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	devicetree@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/17] irqchip: irq-armada-370-xp: use proper return value
 for ->set_affinity()

Hi Thomas,

On 24/10/2014 13:59, Thomas Petazzoni wrote:
> The ->set_affinity() hook of 'struct irq_chip' is supposed to return
> one of IRQ_SET_MASK_OK or IRQ_SET_MASK_OK_NOCOPY. However, the code
> currently simply returns 0. This patch fixes that by using
> IRQ_SET_MASK_OK, which tells the IRQ core that it is responsible for
> updating irq_data.affinity.

It seems that this driver is not the only one to return 0 instead of
IRQ_SET_MASK_OK in the >set_affinity(). I found also irq-xtensa-mx.c,
irq-metag.c and irq-metag-ext.c.


> 
> Note that this patch does not cause any change to the compiled code,
> as IRQ_SET_MASK_OK has the value 0. This is therefore just a simple
> cleanup.
> 
> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Jason Cooper <jason@...edaemon.net>
> Cc: linux-kernel@...r.kernel.org
> ---
>  drivers/irqchip/irq-armada-370-xp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>


Thanks,

Gregory

-- 
Gregory Clement, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com
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