linux-kernel - Re: [PATCH] device-dax: don't set kobj parent during cdev init

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Date:   Fri, 10 Feb 2017 20:46:17 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Logan Gunthorpe <logang@...tatee.com>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Johannes Thumshirn <jthumshirn@...e.de>,
        "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Sajjan Vikas C <vikas.cha.sajjan@....com>,
        Arnd Bergmann <arnd@...db.de>, Jan Kara <jack@...e.cz>,
        linux-kernel@...r.kernel.org, linux-nvdimm@...ts.01.org
Subject: Re: [PATCH] device-dax: don't set kobj parent during cdev init

On Fri, Feb 10, 2017 at 12:19:30PM -0700, Logan Gunthorpe wrote:
> I copied this code and per feedback from Greg Kroah-Hartman [1] the
> cdev's kobject's parent should not be set to the related device.
> This should have minor consequences but isn't doing what anyone
> expects it to.
> 
> This patch then fixes device-dax so it doesn't make the same mistake.
> 
> [1] https://lkml.org/lkml/2017/2/10/370
> 
> Signed-off-by: Logan Gunthorpe <logang@...tatee.com>

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>