linux-kernel - Re: [PATCH v3 7/8] clocksource/drivers/tegra: Cycles can't be 0

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Date:   Fri, 21 Jun 2019 00:59:23 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 7/8] clocksource/drivers/tegra: Cycles can't be 0

19.06.2019 11:19, Thierry Reding пишет:
> On Tue, Jun 18, 2019 at 05:03:57PM +0300, Dmitry Osipenko wrote:
>> Tegra's timer uses n+1 scheme for the counter, i.e. timer will fire after
>> one tick if 0 is loaded. The minimum and maximum numbers of oneshot ticks
>> are defined by clockevents_config_and_register(min, max) invocation and
>> the min value is set to 1 tick. Hence "cycles" value can't ever be 0,
>> unless it's a bug in clocksource core.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>  drivers/clocksource/timer-tegra.c | 13 ++++++++++---
>>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> Acked-by: Thierry Reding <treding@...dia.com>
> 

Thanks!