From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: Nicholas Piggin <npiggin@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
Scott Wood <oss@buserror.net>,
Alessio Igor Bogani <alessio.bogani@elettra.eu>,
Paul Mackerras <paulus@samba.org>, Daniel Axtens <dja@axtens.net>
Subject: Re: [PATCH v2 1/3] powerpc: Factor out common code in setup-common.c
Date: Tue, 9 Aug 2016 09:30:54 -0700 [thread overview]
Message-ID: <CAHQ1cqH650Ef9mdoKiWvy4ubz=sx32bDjgQ9sYQRRve+q8rKMQ@mail.gmail.com> (raw)
In-Reply-To: <20160801134031.7dcb7c82@roar.ozlabs.ibm.com>
On Sun, Jul 31, 2016 at 8:40 PM, Nicholas Piggin <npiggin@gmail.com> wrote:
> On Thu, 28 Jul 2016 16:07:16 -0700
> Andrey Smirnov <andrew.smirnov@gmail.com> wrote:
>
>> Factor out a small bit of common code in machine_restart(),
>> machine_power_off() and machine_halt().
>>
>> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
>> ---
>>
>> No changes compared to v1.
>>
>> arch/powerpc/kernel/setup-common.c | 23 ++++++++++++++---------
>> 1 file changed, 14 insertions(+), 9 deletions(-)
>>
>> diff --git a/arch/powerpc/kernel/setup-common.c
>> b/arch/powerpc/kernel/setup-common.c index 714b4ba..5cd3283 100644
>> --- a/arch/powerpc/kernel/setup-common.c
>> +++ b/arch/powerpc/kernel/setup-common.c
>> @@ -130,15 +130,22 @@ void machine_shutdown(void)
>> ppc_md.machine_shutdown();
>> }
>>
>> +static void machine_hang(void)
>> +{
>> + pr_emerg("System Halted, OK to turn off power\n");
>> + local_irq_disable();
>> + while (1)
>> + ;
>> +}
>
> What's the intended semantics of this function? A default power
> off handler when the platform supplies none?
I was mostly trying to avoid code duplication in
machine_halt/machine_restart/machine_power_off and didn't intend that
function to be used outside. The semantics is just - to hang the CPU
when things didn't go as expected and code that was supposed to
restart/halt/power off the machine failed.
> Would ppc_power_off()
> be a good name?
Calling it "power_off" seems a bit misleading, the function doesn't
really try to do anything related to powering off, really.
Thanks,
Andrey
next prev parent reply other threads:[~2016-08-09 16:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-28 23:07 [PATCH v2 1/3] powerpc: Factor out common code in setup-common.c Andrey Smirnov
2016-07-28 23:07 ` [PATCH v2 2/3] powerpc: Call chained reset handlers during reset Andrey Smirnov
2016-08-01 3:47 ` Nicholas Piggin
2016-08-09 18:27 ` Andrey Smirnov
2016-07-28 23:07 ` [PATCH v2 3/3] powerpc: Convert fsl_rstcr_restart to a reset handler Andrey Smirnov
2016-08-01 4:03 ` Nicholas Piggin
2016-08-09 18:47 ` Andrey Smirnov
2016-08-10 0:58 ` Nicholas Piggin
2016-08-01 3:40 ` [PATCH v2 1/3] powerpc: Factor out common code in setup-common.c Nicholas Piggin
2016-08-09 16:30 ` Andrey Smirnov [this message]
2016-08-10 0:54 ` Nicholas Piggin
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