From: Andrew Lunn <andrew@xxxxxxx> Date: Fri, 25 Sep 2015 00:26:54 +0200 > On Thu, Sep 24, 2015 at 03:15:54PM -0700, David Miller wrote: >> From: Andrew Lunn <andrew@xxxxxxx> >> Date: Thu, 24 Sep 2015 23:57:31 +0200 >> >> > 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@xxxxxxx> >> >> 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. Something needs to hold into the underlying device refcount of a DSA blob so that an unload can't even be attempted in that state. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
