linux-kernel - Re: [patch 04/12] MIPS/pci-rt3883: Consolidate chained IRQ handler install/remove

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Date:	Mon, 13 Jul 2015 16:50:49 -0400 (EDT)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Thomas Gleixner <tglx@...utronix.de>
cc:	LKML <linux-kernel@...r.kernel.org>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	linux-mips@...ux-mips.org,
	Russell King <rmk+kernel@....linux.org.uk>,
	Julia Lawall <Julia.Lawall@...6.fr>
Subject: Re: [patch 04/12] MIPS/pci-rt3883: Consolidate chained IRQ handler
 install/remove



On Mon, 13 Jul 2015, Thomas Gleixner wrote:

> Chained irq handlers usually set up handler data as well. We now have
> a function to set both under irq_desc->lock. Replace the two calls
> with one.

Are the original calls remaining?  If so, should there be a semantic patch
in the kernel to check for this, in case people ut the two calls in teh
future.

julia

>
> Search and conversion was done with coccinelle.
>
> Reported-by: Russell King <rmk+kernel@....linux.org.uk>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Cc: Julia Lawall <Julia.Lawall@...6.fr>
> Cc: Ralf Baechle <ralf@...ux-mips.org>
> Cc: linux-mips@...ux-mips.org
> ---
>  arch/mips/pci/pci-rt3883.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> Index: tip/arch/mips/pci/pci-rt3883.c
> ===================================================================
> --- tip.orig/arch/mips/pci/pci-rt3883.c
> +++ tip/arch/mips/pci/pci-rt3883.c
> @@ -225,8 +225,7 @@ static int rt3883_pci_irq_init(struct de
>  		return -ENODEV;
>  	}
>
> -	irq_set_handler_data(irq, rpc);
> -	irq_set_chained_handler(irq, rt3883_pci_irq_handler);
> +	irq_set_chained_handler_and_data(irq, rt3883_pci_irq_handler, rpc);
>
>  	return 0;
>  }
>
>
>
--
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