From mboxrd@z Thu Jan  1 00:00:00 1970
From: Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Subject: Re: [PATCH V5 5/5] arm: mvebu: Added SMP support for Armada XP
Date: Wed, 21 Nov 2012 11:38:50 +0000
Message-ID: <20121121113850.GZ3290@n2100.arm.linux.org.uk>
References: <1353446150-10088-1-git-send-email-gregory.clement@free-electrons.com>
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To: Gregory CLEMENT <gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Cc: Lior Amsalem <alior-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>, Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>, Ike Pan <ike.pan-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>, Nadav Haklai <nadavh-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>, Ian Molton <ian.molton-4yDnlxn2s6sWdaTGBSpHTA@public.gmane.org>, David Marlin <dmarlin-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, Yehuda Yitschak <yehuday-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>, Jani Monoses <jani.monoses-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, Mike Turquette <mturquette-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>, Tawfik Bayouk <tawfik-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>, Dan Frazier <dann.frazier-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>, Eran Ben-Avi <benavi-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>, Leif Lindholm <leif.lindholm-5wv7dgnIgG8@public.gmane.org>, Sebastian Hesselbarth <sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>, Jon Masters <jcm-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>, Ben Dooks <ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Thomas Petazzoni <thomas.petazzoni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>, Chris Van Hoof <vanhoof-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org>
List-Id: devicetree@vger.kernel.org

On Tue, Nov 20, 2012 at 10:15:49PM +0100, Gregory CLEMENT wrote:
> +ENTRY(armada_xp_secondary_startup)
> +
> +	/* Read CPU id */
> + 	mrc     p15, 0, r1, c0, c0, 5
> +	and     r1, r1, #0xF
> +
> +	/* Add CPU to coherency fabric */
> +	ldr     r0, = ARMADA_XP_CFB_BASE
> +	mov	lr, pc
> +
> +	b	ll_set_cpu_coherent
> +	b	secondary_startup

This looks odd.  Why are you doing a mov lr,pc followed by a plain branch?
What's wrong with 'bl' here ?