tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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@arm.com>
+9
-1
+9
-1
drivers/irqchip/irq-gic-v3-its-platform-msi.c
+9
-1
drivers/irqchip/irq-gic-v3-its-platform-msi.c
···
48
48
return ret;
49
49
}
50
50
51
+
int __weak iort_pmsi_get_dev_id(struct device *dev, u32 *dev_id)
52
+
{
53
+
return -1;
54
+
}
55
+
51
56
static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev,
52
57
int nvec, msi_alloc_info_t *info)
53
58
{
···
62
57
63
58
msi_info = msi_get_domain_info(domain->parent);
64
59
65
-
ret = of_pmsi_get_dev_id(domain, dev, &dev_id);
60
+
if (dev->of_node)
61
+
ret = of_pmsi_get_dev_id(domain, dev, &dev_id);
62
+
else
63
+
ret = iort_pmsi_get_dev_id(dev, &dev_id);
66
64
if (ret)
67
65
return ret;
68
66