linux-kernel - Re: [PATCH 1/5] driver core: make struct class.dev

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Date:   Fri, 25 Nov 2022 15:51:11 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     Jens Axboe <axboe@...nel.dk>, Luis Chamberlain <mcgrof@...nel.org>,
        Russ Weight <russell.h.weight@...el.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Johan Hovold <johan@...nel.org>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        Karsten Keil <isdn@...ux-pingi.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Keith Busch <kbusch@...nel.org>,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>,
        Dominik Brodowski <linux@...inikbrodowski.net>,
        Sebastian Reichel <sre@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Johannes Berg <johannes@...solutions.net>,
        Wolfram Sang <wsa+renesas@...g-engineering.com>,
        Raed Salem <raeds@...dia.com>,
        Chen Zhongjin <chenzhongjin@...wei.com>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Avihai Horon <avihaih@...dia.com>,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Colin Ian King <colin.i.king@...il.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Jakob Koschel <jakobkoschel@...il.com>,
        Antoine Tenart <atenart@...nel.org>,
        Frederic Weisbecker <frederic@...nel.org>,
        Wang Yufen <wangyufen@...wei.com>, linux-block@...r.kernel.org,
        linux-media@...r.kernel.org, linux-nvme@...ts.infradead.org,
        linux-pm@...r.kernel.org, linux-rdma@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH 1/5] driver core: make struct class.dev_uevent() take a
 const *

On 11/23/22 04:25, Greg Kroah-Hartman wrote:
> diff --git a/include/linux/mISDNif.h b/include/linux/mISDNif.h
> index 7dd1f01ec4f9..7aab4a769736 100644
> --- a/include/linux/mISDNif.h
> +++ b/include/linux/mISDNif.h
> @@ -586,7 +586,7 @@ extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *,
>   						void *);
>   extern void	mISDN_unregister_clock(struct mISDNclock *);
>   
> -static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
> +static inline struct mISDNdevice *dev_to_mISDN(const struct device *dev)
>   {
>   	if (dev)
>   		return dev_get_drvdata(dev);

Why does the dev_to_mISDN() function drop constness? I haven't found an 
explanation for this in the cover letter.

Thanks,

Bart.