linux-kernel - Re: [PATCH 2/3] memory: mtk-smi: Add module_exit and module

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Date:   Mon, 25 Jan 2021 09:40:51 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Yong Wu <yong.wu@...iatek.com>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Will Deacon <will@...nel.org>, Tomasz Figa <tfiga@...gle.com>,
        linux-mediatek@...ts.infradead.org, srv_heupstream@...iatek.com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, youlin.pei@...iatek.com,
        Nicolas Boichat <drinkcat@...omium.org>, anan.sun@...iatek.com,
        yi.kuo@...iatek.com
Subject: Re: [PATCH 2/3] memory: mtk-smi: Add module_exit and module_license

On Mon, Jan 25, 2021 at 02:49:41PM +0800, Yong Wu wrote:
> On Fri, 2021-01-22 at 22:34 +0100, Krzysztof Kozlowski wrote:
> > On Thu, Jan 21, 2021 at 02:24:28PM +0800, Yong Wu wrote:
> > > The config MTK_SMI always depends on MTK_IOMMU which is built-in
> > > currently. Thus we don't have module_exit before. This patch adds
> > > module_exit and module_license. It is a preparing patch for supporting
> > > MTK_SMI could been built as a module.
> > > 
> > > Signed-off-by: Yong Wu <yong.wu@...iatek.com>
> > > ---
> > >  drivers/memory/mtk-smi.c | 10 ++++++++++
> > >  1 file changed, 10 insertions(+)
> > > 
> > > diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
> > > index e2aebd2bfa8e..aa2a25abf04f 100644
> > > --- a/drivers/memory/mtk-smi.c
> > > +++ b/drivers/memory/mtk-smi.c
> > > @@ -597,3 +597,13 @@ static int __init mtk_smi_init(void)
> > >  	return platform_register_drivers(smidrivers, ARRAY_SIZE(smidrivers));
> > >  }
> > >  module_init(mtk_smi_init);
> > > +
> > > +static void __exit mtk_smi_exit(void)
> > > +{
> > > +	platform_unregister_drivers(smidrivers, ARRAY_SIZE(smidrivers));
> > > +}
> > > +module_exit(mtk_smi_exit);
> > > +
> > > +MODULE_DESCRIPTION("MediaTek SMI driver");
> > > +MODULE_ALIAS("platform:MediaTek-SMI");
> > 
> > Drivers do not use capital letters, so I have doubts whether this alias
> > is correct.
> 
> I didn't care the upper/lower-case. I will change to lower case in next
> time.

Then why do you need the alias? The name does not match driver name, so
what's the purpose of this alias/

> 
> MODULE_ALIAS("platform:MediaTek-smi")
> 
> > 
> > Adding all these should be squashed with changing Kconfig into tristate.
> > It does not have sense on its own.
> 
> Thanks  very much for review.
> 
> Only confirm: Squash whole this patch or only squash the MODULE_x into
> the next patch?

This entire patch 2/3 should be with 3/3.

Best regards,
Krzysztof