linux-kernel - Re: [PATCH v2 24/35] nds32: defconfig

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Message-ID: <CAK8P3a01n6Buy24JWagJNL+Lauuk-RE=Ee2rxS0Cu33NP+oNEw@mail.gmail.com>
Date:   Mon, 27 Nov 2017 15:27:24 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Greentime Hu <green.hu@...il.com>
Cc:     Greentime <greentime@...estech.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Networking <netdev@...r.kernel.org>,
        Vincent Chen <deanbo422@...il.com>,
        DTML <devicetree@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        David Howells <dhowells@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-serial@...r.kernel.org, Vincent Chen <vincentc@...estech.com>
Subject: Re: [PATCH v2 24/35] nds32: defconfig

On Mon, Nov 27, 2017 at 1:28 PM, Greentime Hu <green.hu@...il.com> wrote:

> +CONFIG_EXPERT=y

You normally shouldn't need CONFIG_EXPERT in a defconfig file, by definition
this is needed for unusual configurations only.

> +CONFIG_NDS32_BUILTIN_DTB="ae3xx"

Having a built-in DTB also makes no sense for a defconfig, when the idea is that
it can run on as many machines as possible.

> +CONFIG_BLK_DEV_LOOP=y
> +CONFIG_BLK_DEV_RAM=y
> +CONFIG_BLK_DEV_RAM_SIZE=8192

Having ramdisk built-in is rather unusual, most users don't use ramdisks
any more since we don't need it for booting with the initramfs.

> +CONFIG_BRIDGE=y
> +CONFIG_TUN=y

These also look unusual. Would it make sense to have these as loadable
modules, or do you require having everything built-in for your workflow?

> +CONFIG_SOUND=y
> +CONFIG_SND=y
> +# CONFIG_SND_SUPPORT_OLD_API is not set
> +# CONFIG_SND_VERBOSE_PROCFS is not set

It seems the sound subsystem is enabled, but no drivers are selected,
so it won't actually do anything.

> +# CONFIG_USB_SUPPORT is not set
> +CONFIG_MMC=y

Same for MMC. If you are still trying to get the respective device drivers
merged, that doesn't need to stop you from enabling the configurations
here.

       Arnd