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Date:   Wed, 11 Jan 2023 10:46:55 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Dan Williams <dan.j.williams@intel.com>
Cc:     linux-kernel@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
        Alison Schofield <alison.schofield@intel.com>,
        Vishal Verma <vishal.l.verma@intel.com>,
        Ira Weiny <ira.weiny@intel.com>,
        Ben Widawsky <bwidawsk@kernel.org>,
        Jeremy Kerr <jk@ozlabs.org>, Joel Stanley <joel@jms.id.au>,
        Alistar Popple <alistair@popple.id.au>,
        Eddie James <eajames@linux.ibm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jonathan Cameron <Jonathan.Cameron@huawei.com>,
        Jilin Yuan <yuanjilin@cdjrlc.com>,
        Heikki Krogerus <heikki.krogerus@linux.intel.com>,
        Alan Stern <stern@rowland.harvard.edu>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        Won Chung <wonchung@google.com>, linux-block@vger.kernel.org,
        linux-cxl@vger.kernel.org, linux-fsi@lists.ozlabs.org,
        linux-usb@vger.kernel.org
Subject: Re: [PATCH 4/5] driver core: make struct device_type.devnode() take
 a const *
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References: <20221123122523.1332370-1-gregkh@linuxfoundation.org>
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 <637e733838b5f_12cdff29466@dwillia2-xfh.jf.intel.com.notmuch>
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On Wed, Nov 23, 2022 at 11:23:36AM -0800, Dan Williams wrote:
> Greg Kroah-Hartman wrote:
> > The devnode() callback in struct device_type should not be modifying the
> > device that is passed into it, so mark it as a const * and propagate the
> > function signature changes out into all relevant subsystems that use
> > this callback.
> > 
> > Cc: Jens Axboe <axboe@kernel.dk>
> > Cc: Alison Schofield <alison.schofield@intel.com>
> > Cc: Vishal Verma <vishal.l.verma@intel.com>
> > Cc: Ira Weiny <ira.weiny@intel.com>
> > Cc: Ben Widawsky <bwidawsk@kernel.org>
> > Cc: Dan Williams <dan.j.williams@intel.com>
> > Cc: Jeremy Kerr <jk@ozlabs.org>
> > Cc: Joel Stanley <joel@jms.id.au>
> > Cc: Alistar Popple <alistair@popple.id.au>
> > Cc: Eddie James <eajames@linux.ibm.com>
> > Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> > Cc: Jilin Yuan <yuanjilin@cdjrlc.com>
> > Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> > Cc: Alan Stern <stern@rowland.harvard.edu>
> > Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Jason Gunthorpe <jgg@ziepe.ca>
> > Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
> > Cc: Won Chung <wonchung@google.com>
> > Cc: linux-block@vger.kernel.org
> > Cc: linux-cxl@vger.kernel.org
> > Cc: linux-fsi@lists.ozlabs.org
> > Cc: linux-kernel@vger.kernel.org
> > Cc: linux-usb@vger.kernel.org
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> [..]
> > diff --git a/drivers/cxl/core/memdev.c b/drivers/cxl/core/memdev.c
> > index 20ce488a7754..6ae8d0bdc61b 100644
> > --- a/drivers/cxl/core/memdev.c
> > +++ b/drivers/cxl/core/memdev.c
> > @@ -27,7 +27,7 @@ static void cxl_memdev_release(struct device *dev)
> >  	kfree(cxlmd);
> >  }
> >  
> > -static char *cxl_memdev_devnode(struct device *dev, umode_t *mode, kuid_t *uid,
> > +static char *cxl_memdev_devnode(const struct device *dev, umode_t *mode, kuid_t *uid,
> >  				kgid_t *gid)
> >  {
> >  	return kasprintf(GFP_KERNEL, "cxl/%s", dev_name(dev));
> 
> For the CXL bit:
> 
> Acked-by: Dan Williams <dan.j.williams@intel.com>

Thanks for the review!