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irqchip/gic-v3-its: Parse new version of msi-parent property

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Now that 126b16e2ad ("Docs: dt: add generic MSI bindings")
has made it into the tree, the time has come to get rid of the
old hack, and to parse msi-parent in its full glory.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Marc Zyngier 2015-09-18 14:07:40 +01:00
parent c8d175883e
commit deac7fc1c8
1 changed files with 15 additions and 3 deletions
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18
drivers/irqchip/irq-gic-v3-its-platform-msi.c
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@ -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;