From: robherring2@gmail.com (Rob Herring)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: highbank: retry wfi on reset request
Date: Mon, 29 Oct 2012 12:22:56 -0500 [thread overview]
Message-ID: <508EBB70.2000708@gmail.com> (raw)
In-Reply-To: <1351221637-21747-1-git-send-email-robherring2@gmail.com>
On 10/25/2012 10:20 PM, Rob Herring wrote:
> From: Rob Herring <rob.herring@calxeda.com>
>
> In some cases, an interrupt can occur and prevent cause failure to enter
> wfi. This causes reset to hang. Retrying the wfi should be enough to
> prevent reset from hanging.
>
> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
> ---
Arnd, Olof,
Can you please apply this for 3.7?
Rob
> arch/arm/mach-highbank/system.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/mach-highbank/system.c b/arch/arm/mach-highbank/system.c
> index 82c2723..86e37cd 100644
> --- a/arch/arm/mach-highbank/system.c
> +++ b/arch/arm/mach-highbank/system.c
> @@ -28,6 +28,7 @@ void highbank_restart(char mode, const char *cmd)
> hignbank_set_pwr_soft_reset();
>
> scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
> - cpu_do_idle();
> + while (1)
> + cpu_do_idle();
> }
>
>
next prev parent reply other threads:[~2012-10-29 17:22 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-26 3:20 [PATCH] ARM: highbank: retry wfi on reset request Rob Herring
2012-10-29 17:22 ` Rob Herring [this message]
2012-11-06 14:55 ` Olof Johansson
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