irqchip/mbigen: move to use bus_get_dev_root()
Direct access to the struct bus_type dev_root pointer is going away soon so replace that with a call to bus_get_dev_root() instead, which is what it is there for. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20230313182918.1312597-21-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -245,11 +245,14 @@ static int mbigen_of_create_domain(struct platform_device *pdev,
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if (!of_property_read_bool(np, "interrupt-controller"))
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continue;
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parent = platform_bus_type.dev_root;
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child = of_platform_device_create(np, NULL, parent);
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if (!child) {
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of_node_put(np);
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return -ENOMEM;
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parent = bus_get_dev_root(&platform_bus_type);
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if (parent) {
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child = of_platform_device_create(np, NULL, parent);
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put_device(parent);
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if (!child) {
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of_node_put(np);
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return -ENOMEM;
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}
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}
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if (of_property_read_u32(child->dev.of_node, "num-pins",
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