linux-kernel - Re: fs: layered device driver to write to evdev

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Message-ID: <Y2MFe1pRdH35fxU8@bombadil.infradead.org>
Date:   Wed, 2 Nov 2022 17:04:11 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Guillermo Rodriguez Garcia <guille.rodriguez@...il.com>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        Kees Cook <keescook@...omium.org>,
        Iurii Zaikin <yzaikin@...gle.com>
Subject: Re: fs: layered device driver to write to evdev

On Wed, Nov 02, 2022 at 02:14:24PM +0100, Guillermo Rodriguez Garcia wrote:
> I understand that device drivers should implement ->write_iter if they
> need to be written from kernel space, but evdev does not support this.
> What is the recommended way to have a layered device driver that can
> talk to evdev ?

Shouldn't just writing write_iter support make this work?

  Luis