[PATCH v2 09/10] PCI: aspeed: Add ASPEED PCIe RC driver

[Markus Elfring]

…
> +++ b/drivers/pci/controller/pcie-aspeed.c
> @@ -0,0 +1,1137 @@
…
> +static int aspeed_irq_msi_domain_alloc(struct irq_domain *domain,
> +				       unsigned int virq, unsigned int nr_irqs,
> +				       void *args)
> +{
…
> +	mutex_lock(&pcie->lock);
> +
> +	bit = bitmap_find_free_region(pcie->msi_irq_in_use, MAX_MSI_HOST_IRQS,
> +				      get_count_order(nr_irqs));
> +
> +	mutex_unlock(&pcie->lock);
…

Under which circumstances would you become interested to apply a statement
like “guard(mutex)(&pcie->lock);”?
https://elixir.bootlin.com/linux/v6.16-rc6/source/include/linux/mutex.h#L225

Regards,
Markus