Re: regression (bisected): "modprobe parport_pc" hangs in current mainline

From: Sudip Mukherjee
Date: Mon Mar 25 2019 - 06:01:34 EST


On Mon, Mar 25, 2019 at 7:30 AM Michal Kubecek <mkubecek@xxxxxxx> wrote:
>
> On Sun, Mar 24, 2019 at 07:38:38PM +0000, Sudip Mukherjee wrote:
> > And I was able to reproduce the problem using a vm and Suse Tumblewood with
> > next-20190322. Can you please try the attached patch and test on your vm and
> > machine and check if it fixes the problem.
> >
> > --
> > Regards
> > Sudip
>
> > diff --git a/drivers/parport/share.c b/drivers/parport/share.c
> > index 0171b8dbcdcd..f87948fbfc34 100644
> > --- a/drivers/parport/share.c
> > +++ b/drivers/parport/share.c
> > @@ -274,7 +274,7 @@ static int port_check(struct device *dev, void *dev_drv)
> > int __parport_register_driver(struct parport_driver *drv, struct module *owner,
> > const char *mod_name)
> > {
> > - if (list_empty(&portlist))
> > + if (list_empty(&portlist) && strcmp(drv->name, "daisy_drv"))
> > get_lowlevel_driver();
> >
> > if (drv->devmodel) {
>
> Yes, with this patch (on top of v5.1-rc2), both physical machine and VM
> let the module(s) load cleanly even with the alias line restored.
>
> Tested-by: Michal Kubecek <mkubecek@xxxxxxx>

Thanks Michal. I will add it to my queue with your Tested-by.

btw, I think I liked using Suse. :)


--
Regards
Sudip