linux-kernel - Re: [PATCH 2/2] uio:powerpc:mpc85xx: l2-cache-sram uio driver implementation

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Message-ID: <Yqigg7jMu9kwepyH@infradead.org>
Date:   Tue, 14 Jun 2022 07:51:47 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Wang Wenhu <wenhu.wang@...mail.com>
Cc:     gregkh@...uxfoundation.org, christophe.leroy@...roup.eu,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] uio:powerpc:mpc85xx: l2-cache-sram uio driver
 implementation

UIO seems like the wrong kind of interface for this.  Why isn't this
a simple character device?