linux-kernel - Re: [PATCH 3/7] clocksource: mips-gic: Split clocksource and clockevent initialization

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Message-ID: <CAL1qeaG4mh1_gnJA8RqF5xKuco=RUsXfLBcKC2g4OxiXfqUgKA@mail.gmail.com>
Date:	Fri, 22 May 2015 09:53:49 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	Ezequiel Garcia <ezequiel.garcia@...tec.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux-MIPS <linux-mips@...ux-mips.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	James Hartley <james.hartley@...tec.com>,
	James Hogan <james.hogan@...tec.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Damien Horsley <Damien.Horsley@...tec.com>,
	Govindraj Raja <Govindraj.Raja@...tec.com>
Subject: Re: [PATCH 3/7] clocksource: mips-gic: Split clocksource and
 clockevent initialization

On Thu, May 21, 2015 at 3:25 PM, Ezequiel Garcia
<ezequiel.garcia@...tec.com> wrote:
>
>
> On 05/21/2015 07:24 PM, Andrew Bresticker wrote:
>> On Thu, May 21, 2015 at 2:37 PM, Ezequiel Garcia
>> <ezequiel.garcia@...tec.com> wrote:
>>> This is preparation work for the introduction of clockevent frequency
>>> update with a clock notifier. This is only possible when the device
>>> is passed a clk struct, so let's split the legacy and devicetree
>>> initialization.
>>>
>>> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@...tec.com>
>>> ---
>>>  drivers/clocksource/mips-gic-timer.c | 13 ++++++++-----
>>>  1 file changed, 8 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/drivers/clocksource/mips-gic-timer.c b/drivers/clocksource/mips-gic-timer.c
>>> index c4352f0..22a4daf 100644
>>> --- a/drivers/clocksource/mips-gic-timer.c
>>> +++ b/drivers/clocksource/mips-gic-timer.c
>>> @@ -142,11 +142,6 @@ static void __init __gic_clocksource_init(void)
>>>         ret = clocksource_register_hz(&gic_clocksource, gic_frequency);
>>>         if (ret < 0)
>>>                 pr_warn("GIC: Unable to register clocksource\n");
>>> -
>>> -       gic_clockevent_init();
>>> -
>>> -       /* And finally start the counter */
>>> -       gic_start_count();
>>>  }
>>
>> Instead of duplicating this bit in both the OF and non-OF paths, maybe
>> it would be better to do the notifier registration in
>> gic_clockevent_init(), either by passing around the struct clk or
>> making it a global?
>>
>
> Yeah, I had something like that first, but somehow it looked ugly to have:
>
>   gic_clockevent_init(IS_ERR(clk) ? NULL : clk);
>
> Don't have a strong opinion though.

Ah that is a bit ugly.  I'm fine either way though, so:

Reviewed-by: Andrew Bresticker <abrestic@...omium.org>
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