Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c2c8661f authored by Marc Zyngier's avatar Marc Zyngier
Browse files

irqchip/gic-v3-its: Add IORT hook for platform MSI support 



Getting hold of the DevID requires us to call iort_pmsi_get_dev_id().
Since iort_pmsi_get_dev_id() may or may not be implemented, we
provide a weak function that acts as a stub.

The weak function will be removed when the ACPI counterpart is
merged.

Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent f907c515

drivers/irqchip/irq-gic-v3-its-platform-msi.c

+9 −1
Original line number Diff line number Diff line
@@ -48,6 +48,11 @@ static int of_pmsi_get_dev_id(struct irq_domain *domain, struct device *dev, 
	return ret;

}



int __weak iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id)

{

	return -1;

}



static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev,

			    int nvec, msi_alloc_info_t *info)

{
@@ -57,7 +62,10 @@ static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev, 


	msi_info = msi_get_domain_info(domain->parent);



	if (dev->of_node)

		ret = of_pmsi_get_dev_id(domain, dev, &dev_id);

	else

		ret = iort_pmsi_get_dev_id(dev, &dev_id);

	if (ret)

		return ret;