linux-kernel - Re: 答复: [PATCH] clocksource/drivers/sprd: Remove the dependency between sprd timer and SPRD arch

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Message-ID: <cde99078-c13d-4454-cdcb-990239571ecc@linaro.org>
Date:   Tue, 8 Jun 2021 14:08:26 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     柏年福 (Nianfu Bai) 
        <nianfu.bai@...soc.com>, Nianfu Bai <bnf20061983@...il.com>,
        "tglx@...utronix.de" <tglx@...utronix.de>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        张瑞峰 (Ruifeng Zhang/10040) 
        <Ruifeng.Zhang1@...soc.com>
Subject: Re: 答复: [PATCH] clocksource/drivers/sprd: Remove the dependency between sprd timer and SPRD arch


Nianfu,

On 08/06/2021 04:55, 柏年福 (Nianfu Bai) wrote:
> On 11/05/2021 09:08, Nianfu Bai wrote:
>> From: Nianfu Bai <nianfu.bai@...soc.com>
>>
>> Tick broadcast installed by insmod cannot switch to oneshot mode correctly
>> caused by linux timer framework, need to build in kernel image.
> 
> What timer is compiled as a module?
>> We want to compile sprd timer  as a module.
> 
> Why the timer framework does not allow to switch to it ?
>> Pls refer to the patch description deblow:
> https://lore.kernel.org/lkml/161860007587.29796.7100262021118685563.tip-bot2@tip-bot2/

Thanks for the pointer I understand the bug.

However the description does not refer to this fix. It tells the timer
is a module and then tells it depends on the sprd arch.

What are the connection between all these points?

On the other side, the email format is not text, replies are not
correctly put inline, it is hard to follow the discussion.

Please, take the time to read the documentation about submitting patches
[1] and then provide a clear Changelog, no need to refer the timer is
loaded after because it is a module, the Kconfig says the opposite.

Thanks

  -- Daniel

[1] Documentation/process/*

>> SPRD_TIMER
>> has been selected by SPRD arch, we have to enable SPRD arch when we build
>> sprd timer in kernel image, this action conflicts with general kernel image,
> 
> Why this is conflicting with general kernel image?
> 
>> so we need to remove the dependency between sprd timer and SPRD arch.
> 
> Can you rephrase the changelog, I'm not getting the point.
> 
>> Signed-off-by: Nianfu Bai <nianfu.bai@...soc.com>
>> Signed-off-by: Ruifeng Zhang <ruifeng.zhang1@...soc.com>
>> ---
>>  drivers/clocksource/Kconfig | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
>> index 39aa21d..04b333c 100644
>> --- a/drivers/clocksource/Kconfig
>> +++ b/drivers/clocksource/Kconfig
>> @@ -447,10 +447,8 @@ config MTK_TIMER
>>         Support for Mediatek timer driver.
>>
>>  config SPRD_TIMER
>> -     bool "Spreadtrum timer driver" if EXPERT
>> +     bool "Spreadtrum timer driver" if COMPILE_TEST
>>       depends on HAS_IOMEM
>> -     depends on (ARCH_SPRD || COMPILE_TEST)
>> -     default ARCH_SPRD
>>       select TIMER_OF
>>       help
>>         Enables support for the Spreadtrum timer driver.
>>
> 
> 
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