netdev - Re: [PATCH net] net: phy: Fix lack of reference count on PHY driver

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Message-ID: <20170201102208.GM27312@n2100.armlinux.org.uk>
Date:   Wed, 1 Feb 2017 10:22:09 +0000
From:   Russell King - ARM Linux <linux@...linux.org.uk>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, davem@...emloft.net, andrew@...n.ch,
        Mao Wenan <maowenan@...wei.com>
Subject: Re: [PATCH net] net: phy: Fix lack of reference count on PHY driver

On Tue, Jan 31, 2017 at 06:46:43PM -0800, Florian Fainelli wrote:
> From: Mao Wenan <maowenan@...wei.com>
> 
> There is currently no reference count being held on the PHY driver,
> which makes it possible to remove the PHY driver module while the PHY
> state machine is running and polling the PHY. This could cause crashes
> similar to this one to show up:

Does this really solve the problem?  What if you use sysfs to unbind the
driver but without removing the module?

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