Commit-ID: c2c8661fd717e2f29cd099ed213b565830b5cbcc
Gitweb: http://git.kernel.org/tip/c2c8661fd717e2f29cd099ed213b565830b5cbcc
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Wed, 29 Mar 2017 15:13:07 +0100
Committer: Marc Zyngier <marc.zyngier@xxxxxxx>
CommitDate: Fri, 7 Apr 2017 10:52:21 +0100
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: Marc Zyngier <marc.zyngier@xxxxxxx>
---
drivers/irqchip/irq-gic-v3-its-platform-msi.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
index e4ba9f4..9e9dda3 100644
--- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
@@ -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);
- ret = of_pmsi_get_dev_id(domain, dev, &dev_id);
+ 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;
--
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