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path: root/drivers/irqchip/irq-gic-v3-its-platform-msi.c
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Diffstat (limited to 'drivers/irqchip/irq-gic-v3-its-platform-msi.c')
-rw-r--r--drivers/irqchip/irq-gic-v3-its-platform-msi.c21
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/irqchip/irq-gic-v3-its-platform-msi.c b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
index a86550562779..470b4aa7d62c 100644
--- a/drivers/irqchip/irq-gic-v3-its-platform-msi.c
+++ b/drivers/irqchip/irq-gic-v3-its-platform-msi.c
@@ -29,13 +29,25 @@ static int its_pmsi_prepare(struct irq_domain *domain, struct device *dev,
{
struct msi_domain_info *msi_info;
u32 dev_id;
- int ret;
+ int ret, index = 0;
msi_info = msi_get_domain_info(domain->parent);
/* Suck the DeviceID out of the msi-parent property */
- ret = of_property_read_u32_index(dev->of_node, "msi-parent",
- 1, &dev_id);
+ do {
+ struct of_phandle_args args;
+
+ ret = of_parse_phandle_with_args(dev->of_node,
+ "msi-parent", "#msi-cells",
+ index, &args);
+ if (args.np == irq_domain_get_of_node(domain)) {
+ if (WARN_ON(args.args_count != 1))
+ return -EINVAL;
+ dev_id = args.args[0];
+ break;
+ }
+ } while (!ret);
+
if (ret)
return ret;
@@ -78,7 +90,8 @@ static int __init its_pmsi_init(void)
continue;
}
- if (!platform_msi_create_irq_domain(np, &its_pmsi_domain_info,
+ if (!platform_msi_create_irq_domain(of_node_to_fwnode(np),
+ &its_pmsi_domain_info,
parent)) {
pr_err("%s: unable to create platform domain\n",
np->full_name);