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Date:   Tue, 14 Jun 2022 07:51:47 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Wang Wenhu <wenhu.wang@hotmail.com>
Cc:     gregkh@linuxfoundation.org, christophe.leroy@csgroup.eu,
        linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] uio:powerpc:mpc85xx: l2-cache-sram uio driver
 implementation
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UIO seems like the wrong kind of interface for this.  Why isn't this
a simple character device?