linux-kernel - Re: [PATCH 1/3] reset: imx7: Support module build

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Date:   Mon, 29 Jun 2020 13:41:28 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Anson Huang <anson.huang@....com>
Cc:     Russell King - ARM Linux <linux@...linux.org.uk>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Stefan Agner <stefan.agner@...adex.com>,
        "oleksandr.suvorov@...adex.com" <oleksandr.suvorov@...adex.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Leo Li <leoyang.li@....com>, Vinod Koul <vkoul@...nel.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Olof Johansson <olof@...om.net>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>
Subject: Re: [PATCH 1/3] reset: imx7: Support module build

On Mon, Jun 29, 2020 at 1:32 PM Anson Huang <anson.huang@....com> wrote:
> > Subject: Re: [PATCH 1/3] reset: imx7: Support module build
> >
> > On Mon, Jun 29, 2020 at 12:45 PM Anson Huang <anson.huang@....com>
> > wrote:
> > > > Subject: Re: [PATCH 1/3] reset: imx7: Support module build On Mon,
> > > > Jun 29, 2020 at 12:25 PM Anson Huang <Anson.Huang@....com> wrote:
> > >
> > > The reset driver normally won't be removed since it is necessary for
> > > drivers which need it, it is just for Android GKI support, in this
> > > case, do we need to change it to module_platform_driver()?
> >
> > Please at least try to do it, or explain in the changelog what went wrong if it
> > doesn't work.
> >
> > I don't think "because Android GKI" should ever be the sole justification for a
> > patch. Making drivers loadable module is a good idea regardless of GKI, and if
> > you do that, then make it behave like any other loadable module.
> >
>
> OK, will do it in V2, BTW, I think there is nothing need to be done for .remove() callback,
> can I just skip it or need to add a blank callback anyway?

I think if everything is done through devm_() calls you should be able to
have no .remove() callback at all, but I have not tried that.

     Arnd