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Date:   Thu, 15 Dec 2022 00:11:11 -0800
From:   Christoph Hellwig <hch@infradead.org>
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Cc:     linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
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        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Chaitanya Kulkarni <kch@nvidia.com>,
        Wolfram Sang <wsa+renesas@sang-engineering.com>
Subject: Re: [RFC PATCH 2/2] block: add uImage.FIT block partition driver
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> +	dev = class_find_device_by_devt(&block_class, devt);
> +	if (!dev)
> +		return -EPROBE_DEFER;

FYI, class_find_device_by_devt is not for driver use.  The only reson
it isn't marker static is because of various legacy driver model and
devtmpfs interactions.