From: Marc Zyngier <marc.zyngier@arm.com>
To: linux-sh@vger.kernel.org
Subject: Re: [PATCH] mach-shmobile: r8a7779 SMP TWD boot regression fix
Date: Thu, 10 May 2012 10:03:41 +0000 [thread overview]
Message-ID: <4FAB927D.6000600@arm.com> (raw)
In-Reply-To: <20120510055722.29862.28709.sendpatchset@w520>
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...
next prev parent reply other threads:[~2012-05-10 10:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-10 5:57 [PATCH] mach-shmobile: r8a7779 SMP TWD boot regression fix Magnus Damm
2012-05-10 10:03 ` Marc Zyngier [this message]
2012-05-10 10:10 ` Magnus Damm
2012-05-10 10:13 ` Marc Zyngier
2012-05-10 10:37 ` Magnus Damm
2012-05-10 21:42 ` Rafael J. Wysocki
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