linux-kernel - Re: [PATCH] powerpc/fsl: Use irq_data_get_irq_handler

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Wed, 1 Jun 2011 12:14:40 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
cc:	Linux/PPC Development <linuxppc-dev@...ts.ozlabs.org>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc/fsl: Use irq_data_get_irq_handler_data() in
 chain handler

On Wed, 1 Jun 2011, Geert Uytterhoeven wrote:

> If you already have a pointer to a struct irq_data , it's more efficient
> to use irq_data_get_irq_handler_data().
> irq_get_handler_data() has to look up the struct irq_desc pointer again,
> which was already passed to the chain handler.
> 
> Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
> ---
> Completely untested, not even compile-tested.
> If this is correct, there are probably more of these?
> 
>  arch/powerpc/sysdev/fsl_msi.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c
> index 92e7833..9b92c82 100644
> --- a/arch/powerpc/sysdev/fsl_msi.c
> +++ b/arch/powerpc/sysdev/fsl_msi.c
> @@ -193,7 +193,7 @@ static void fsl_msi_cascade(unsigned int irq, struct irq_desc *desc)
>  	u32 have_shift = 0;
>  	struct fsl_msi_cascade_data *cascade_data;
>  
> -	cascade_data = irq_get_handler_data(irq);
> +	cascade_data = irq_data_get_irq_handler_data(idata);

  cascade_data = irq_desc_get_handler_data(desc);

Might compile and work :)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/