On Fri, Nov 22, 2024 at 09:51:39AM +0200, Tomi Valkeinen wrote: > From: Tomi Valkeinen <tomi.valkeinen+renesas@xxxxxxxxxxxxxxxx> > > When we have an ATR, and another ATR as a subdevice of the first ATR, > we get lockdep warnings for the i2c_atr.lock and > i2c_atr_chan.orig_addrs_lock. This is because lockdep uses a static key > for the locks, and doesn't see the locks of the separate ATR instances > as separate. ... > + lockdep_register_key(&atr->lock_key); > mutex_init(&atr->lock); > + lockdep_set_class(&atr->lock, &atr->lock_key); mutext_init_with_key() ... > + lockdep_register_key(&chan->orig_addrs_lock_key); > mutex_init(&chan->orig_addrs_lock); > + lockdep_set_class(&chan->orig_addrs_lock, &chan->orig_addrs_lock_key); Ditto. -- With Best Regards, Andy Shevchenko
