On 07.01.2020 14:05, Matteo Ghidoni wrote: > Hi all, > > With the introduction of the following patch, we are facing an issue with the > activation of the Freescale network device (ucc_geth driver) on our kmeter1 > board based on a MPC8360:
+Li as ucc_geth maintainer Can you describe the symptoms of the issue? > > commit 124eee3f6955f7aa19b9e6ff5c9b6d37cb3d1e2c > Author: Heiner Kallweit <hkallwe...@gmail.com> > Date: Tue Sep 18 21:55:36 2018 +0200 > > net: linkwatch: add check for netdevice being present to linkwatch_do_dev > > Based on my observations, just before trying to activate the device through > linkwatch_event, the controller wants to adjust the MAC configuration and in > order to achieve this it detaches the device. This avoids the activation of > the net device. > It sounds a little bit odd to rely on an asynchronous linkwatch event here. Can you give a call trace? The driver is quite old and maybe some parts need to be improved. The referenced change is more than a year old and I'm not aware of any other problem with it. So it seems the change isn't wrong. > This is already happening with older versions (I checked with the v4.14.162) > and also there the situation is the same, but without the additional check in > the if condition the device is activated. > > I am currently working with the v5.4.8 kernel version, but the behavior > remains the same also with the latest v5.5-rc4. > > Any idea how to solve this? Any help is appreciated. > > Regards, > Matteo > Heiner
