On Thu, Sep 24, 2015 at 03:15:54PM -0700, David Miller wrote:

From: Andrew Lunn <andrew@lunn.ch>
Date: Thu, 24 Sep 2015 23:57:31 +0200

quoted

I built the FEC driver as a module, and it won't unload:

 kernel:unregister_netdevice: waiting for eth1 to become free. Usage count = 1
unregister_netdevice: waiting for eth1 to become free. Usage count = 1

i assume because DSA holds a reference. I've not tried a fully module
build, DSA has issues with that.

Tested-by: Andrew Lunn <andrew@lunn.ch>

So, is this a regression?

Sorry, worded that badly. Since DSA is still active, it should not be
possible to unload the FEC driver. DSA should have a reference to it,
and mdio-mux also should have a reference to the mdio bus of the FEC
driver.

As Russell requested, i will re-test without his patches, just to make
sure.

	Andrew