On Mon, Jul 29, 2024 at 01:38:06PM GMT, Markus Elfring wrote: > … > > +++ b/drivers/dma/cv1800-dmamux.c > > @@ -0,0 +1,259 @@ > … > > +static void cv1800_dmamux_free(struct device *dev, void *route_data) > > +{ > … > > + unsigned long flags; > > + > > + spin_lock_irqsave(&dmamux->lock, flags); > … > > + spin_unlock_irqrestore(&dmamux->lock, flags); > … > > Under which circumstances would you become interested to apply a statement > like “guard(spinlock_irqsave)(&dmamux->lock);”? > https://elixir.bootlin.com/linux/v6.10.2/source/include/linux/spinlock.h#L574 > > Regards, > Markus This is very useful and I am pretty intersted, but I am not sure it is suitable. Could you share some technical detail (or some documents) about this method? Regards, Inochi