linux-kernel - Re: [PATCH 2/2] clocksource/drivers/fttmr010: Be stricter on IRQs

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Message-ID: <fbe67d96-70dc-c8a4-106c-8bfced42c1ce@linaro.org>
Date:   Fri, 20 Aug 2021 16:16:48 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Cédric Le Goater <clg@...d.org>,
        Joel Stanley <joel@....id.au>
Subject: Re: [PATCH 2/2] clocksource/drivers/fttmr010: Be stricter on IRQs

On 20/08/2021 15:39, Linus Walleij wrote:
> On Fri, Aug 20, 2021 at 10:53 AM Daniel Lezcano
> <daniel.lezcano@...aro.org> wrote:
>>
>> On 25/07/2021 00:44, Linus Walleij wrote:
>>> Make sure we check that the right interrupt occurred before
>>> calling the event handler for timer 1. Report spurious IRQs
>>> as IRQ_NONE.
>>
>> Does it not mean there is something wrong with the initial setup ?
> 
> No it is not occurring. This is just to protect against ordinary
> spurious interrupts (return from sleep glitches in electronics,
> quantum effects...)

I was not aware such problems can happen.

Thanks for the clarification.


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