linux-kernel - Re: [PATCH 4/5] ARM: mvebu: Enable SCU Speculative linefills to L2 for Armada 375/38x

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Message-ID: <20140628170401.758c9d63@free-electrons.com>
Date:	Sat, 28 Jun 2014 17:04:01 +0200
From:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
Cc:	Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Shawn Guo <shawn.guo@...escale.com>,
	Sascha Hauer <kernel@...gutronix.de>,
	Lior Amsalem <alior@...vell.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	linux-kernel@...r.kernel.org, Nadav Haklai <nadavh@...vell.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 4/5] ARM: mvebu: Enable SCU Speculative linefills to L2
 for Armada 375/38x

Dear Gregory CLEMENT,

On Fri, 27 Jun 2014 00:43:27 +0200, Gregory CLEMENT wrote:

> diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c
> index 8bb742fdf5ca..a24ea105e709 100644
> --- a/arch/arm/mach-mvebu/board-v7.c
> +++ b/arch/arm/mach-mvebu/board-v7.c
> @@ -45,6 +45,7 @@ static void __init mvebu_scu_enable(void)
>  		of_find_compatible_node(NULL, NULL, "arm,cortex-a9-scu");
>  	if (np) {
>  		scu_base = of_iomap(np, 0);
> +		scu_spec_linefills_enable(scu_base, true);

I find it rather weird to have a function call <foo>_enable() take a
boolean parameter to indicate whether <foo> should be enabled or
disabled. You should choose between:

	scu_spec_linefills_ctrl(scu_base, true/false)

(or some better suffix than _ctrl), or:

	scu_spec_linefills_enable(scu_base)
	scu_spec_linefills_disable(scu_base)

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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