Re: [PATCH v8 3/3] dmaengine: add driver for Sophgo CV18XX/SG200X dmamux

[Markus Elfring]

…
> +++ 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