From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marc Zyngier <marc.zyngier@arm.com>
Date: Thu, 10 May 2012 10:03:41 +0000
Subject: Re: [PATCH] mach-shmobile: r8a7779 SMP TWD boot regression fix
Message-Id: <4FAB927D.6000600@arm.com>
List-Id: <linux-sh.vger.kernel.org>
References: <20120510055722.29862.28709.sendpatchset@w520>
In-Reply-To: <20120510055722.29862.28709.sendpatchset@w520>
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To: linux-sh@vger.kernel.org

Hi Magnus,

On 10/05/12 06:57, Magnus Damm wrote:
> From: Magnus Damm <damm@opensource.se>
> 
> Fix SMP TWD boot regression on r8a7779 based platforms caused by:
> 
> 4200b16 ARM: shmobile: convert to twd_local_timer_register() interface
> 
> After the merge of the above commit it has been impossible to boot
> r8a7779 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The
> kernel crashes at smp_init_cpus() timing which is before the console
> has been initialized, so to the user this looks like a kernel lock up
> without any particular error message.
> 
> This patch fixes the regression on r8a7779 by moving the TWD
> registration code from smp_init_cpus() to sys_timer->init() time. 
> 
> Signed-off-by: Magnus Damm <damm@opensource.se>

I'm a bit confused here. Does sh73a0 work OK? If so, why is the behavior
any different?

	M.
-- 
Jazz is not dead. It just smells funny...