Hi Jakub,

On Tue, Oct 27, 2020 at 04:16:06PM -0700, Jakub Kicinski wrote:
> On Fri, 23 Oct 2020 13:28:34 -0700 Moritz Fischer wrote:
> > diff --git a/drivers/net/ethernet/dec/tulip/de2104x.c 
> > b/drivers/net/ethernet/dec/tulip/de2104x.c
> > index d9f6c19940ef..ea7442cc8e75 100644
> > --- a/drivers/net/ethernet/dec/tulip/de2104x.c
> > +++ b/drivers/net/ethernet/dec/tulip/de2104x.c
> > @@ -2175,11 +2175,19 @@ static int __maybe_unused de_resume(struct device 
> > *dev_d)
> >  
> >  static SIMPLE_DEV_PM_OPS(de_pm_ops, de_suspend, de_resume);
> >  
> > +static void de_shutdown(struct pci_dev *pdev)
> > +{
> > +   struct net_device *dev = pci_get_drvdata(pdev);
> > +
> > +   de_close(dev);
> 
> Apparently I get all the best ideas when I'm about to apply something..

Better now than after =)

> I don't think you can just call de_close() like that, because 
> (a) it may expect rtnl_lock() to be held, and (b) it may not be open.

how about:

rtnl_lock();
if (netif_running(dev))
        dev_close(dev);
rtnl_unlock();

> 
> Perhaps call unregister_netdev(dev) - that'll close the device.
> Or rtnl_lock(); dev_close(dev); rtnl_unlock();
> 
> > +}
> > +
> >  static struct pci_driver de_driver = {
> >     .name           = DRV_NAME,
> >     .id_table       = de_pci_tbl,
> >     .probe          = de_init_one,
> >     .remove         = de_remove_one,
> > +   .shutdown       = de_shutdown,
> >     .driver.pm      = &de_pm_ops,
> >  };
> >  
> 

Cheers,
Moritz

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