linux-kernel - Re: [PATCH v3 3/5] reset: stm32: use the reset-simple driver

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Date:   Wed, 16 Aug 2017 13:55:32 -0700
From:   Alexandru Gagniuc <alex.g@...ptrum.com>
To:     Andreas Färber <afaerber@...e.de>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        linux-kernel@...r.kernel.org,
        Andre Przywara <andre.przywara@....com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>,
        Baoyou Xie <baoyou.xie@...aro.org>,
        Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>,
        Steffen Trumtrar <s.trumtrar@...gutronix.de>,
        Dinh Nguyen <dinguyen@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, kernel@...gutronix.de
Subject: Re: [PATCH v3 3/5] reset: stm32: use the reset-simple driver



On 08/16/2017 01:52 PM, Andreas Färber wrote:
> Am 16.08.2017 um 22:50 schrieb Alexandru Gagniuc:
>> On 08/16/2017 02:46 AM, Philipp Zabel wrote:
>>> The reset-simple driver can be used without changes.
>>>
>>> Signed-off-by: Philipp Zabel <p.zabel@...gutronix.de>
>>
>> Reviewed-by: Alexandru Gagniuc <alex.g@...ptrum.com>
>>
>>> ---
>>>  drivers/reset/Kconfig        |  11 ++---
>>>  drivers/reset/Makefile       |   1 -
>>>  drivers/reset/reset-simple.c |   1 +
>>>  drivers/reset/reset-stm32.c  | 108
>>> -------------------------------------------
>>>  4 files changed, 4 insertions(+), 117 deletions(-)
>>>  delete mode 100644 drivers/reset/reset-stm32.c
>>>
>>> diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
>>> index 78a8f6057985b..29f4487c290fc 100644
>>> --- a/drivers/reset/Kconfig
>>> +++ b/drivers/reset/Kconfig
>>> @@ -70,19 +70,14 @@ config RESET_PISTACHIO
>>>
>>>  config RESET_SIMPLE
>>>      bool "Simple Reset Controller Driver" if COMPILE_TEST
>>> -    default ARCH_SOCFPGA || ARCH_SUNXI
>>> +    default ARCH_SOCFPGA || ARCH_STM32 || ARCH_SUNXI
>>
>> If this series gets respun, could you please look into removing the
>> ARCH_ dependency here?
>
> Why?

Because the driver has to keep track of all its users, which is a 
layering violation.

> It's not a dependency, just the default. Doing it here decouples it
> from having to do Kconfig changes in the arm-soc tree as well.

Doing it here allows this list to grow without bounds.

> Regards,
> Andreas
>