linux-kernel - Re: [PATCH 11/22] mtd/nand: remove sh

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Date:   Fri, 13 Jan 2023 11:06:22 +0100
From:   "Arnd Bergmann" <arnd@...db.de>
To:     "Geert Uytterhoeven" <geert@...ux-m68k.org>,
        "Christoph Hellwig" <hch@....de>
Cc:     "Yoshinori Sato" <ysato@...rs.sourceforge.jp>,
        "Rich Felker" <dalias@...c.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "laurent.pinchart" <laurent.pinchart@...asonboard.com>,
        "Kieran Bingham" <kieran.bingham+renesas@...asonboard.com>,
        "Geert Uytterhoeven" <geert+renesas@...der.be>,
        linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
        devicetree@...r.kernel.org,
        Linux-Arch <linux-arch@...r.kernel.org>,
        dmaengine@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        linux-i2c@...r.kernel.org, linux-input@...r.kernel.org,
        linux-media@...r.kernel.org,
        "linux-mmc @ vger . kernel . org" <linux-mmc@...r.kernel.org>,
        linux-mtd@...ts.infradead.org, Netdev <netdev@...r.kernel.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        linux-rtc@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-usb@...r.kernel.org,
        linux-fbdev@...r.kernel.org, alsa-devel@...a-project.org,
        linux-sh@...r.kernel.org
Subject: Re: [PATCH 11/22] mtd/nand: remove sh_flctl

On Fri, Jan 13, 2023, at 09:30, Geert Uytterhoeven wrote:
> On Fri, Jan 13, 2023 at 7:24 AM Christoph Hellwig <hch@....de> wrote:
>> Now that arch/sh is removed this driver is dead code.
>
> FTR, this hardware block is also present on the ARM-based
> SH-Mobile AG5 and R-Mobile A1 SoCs.
> Again, no DT support.

I would generally consider drivers dead when they have no DT support
and no platform in the upstream kernel registering the corresponding
device.

If anyone still uses this driver on SH-Mobile or R-Mobile, they
have clearly given up on upstreaming their patches by now, and
they can carry the burden of maintaining the driver out of tree,
or re-submit a working version.

    Arnd