Re: 3.19: Sony playstation controller causes kernel oops

[Jiri Kosina]

On Mon, 23 Feb 2015, David Herrmann wrote:

> Hi Jiri
> 
> On Sun, Feb 22, 2015 at 10:50 PM, Jiri Kosina <jkosina@xxxxxxx> wrote:
> > [ some CCs added and full dmesg kept for reference ]
> >
> > On Sun, 22 Feb 2015, Pavel Machek wrote:
> >
> >> Hi!
> >>
> >> I plugged in part of PS move to the PC, to let it charge. Got: full
> >> dmesg in attachment. I believe I charged it in PC before, but it may
> >> be year ago or more.
> >>
> >> Ideas?
> >
> > Ok, this is embarassing. I guess the patch below fixes it, right? (the
> > spinlock got introduced in d2d782fccee, so I guess you didn't have it a
> > year ago)
> >
> > diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c
> > index 31e9d25..3756a62 100644
> > --- a/drivers/hid/hid-sony.c
> > +++ b/drivers/hid/hid-sony.c
> > @@ -2140,6 +2140,7 @@ static int __init sony_init(void)
> >  {
> >         dbg_hid("Sony:%s\n", __func__);
> >
> > +       spin_lock_init(&sony_dev_list_lock);
> >         return hid_register_driver(&sony_driver);
> >  }
> 
> Nice catch. I'd prefer the patch below, though. For both:
> Reviewed-by: David Herrmann <dh.herrmann@xxxxxxxxx>

Thanks. I already used the DEFINE_SPINLOCK() variant and pushed it 
our earlier today.

There was also missing sc->lock initialization in per-device probe, Frank 
sent patch for that as well.

Both now applied and pushed out.

-- 
Jiri Kosina
SUSE Labs
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