add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/irqchip/irqchip.c
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@@ -38,8 +38,10 @@
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 	struct device_node *par_np = of_irq_find_parent(np);
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 	of_irq_init_cb_t irq_init_cb = of_device_get_match_data(&pdev->dev);
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-	if (!irq_init_cb)
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+	if (!irq_init_cb) {
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+		of_node_put(par_np);
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 		return -EINVAL;
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+	}
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 	if (par_np == np)
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 		par_np = NULL;
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@@ -52,8 +54,10 @@
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 	 * interrupt controller. The actual initialization callback of this
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 	 * interrupt controller can check for specific domains as necessary.
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 	 */
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-	if (par_np && !irq_find_matching_host(par_np, DOMAIN_BUS_ANY))
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+	if (par_np && !irq_find_matching_host(par_np, DOMAIN_BUS_ANY)) {
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+		of_node_put(par_np);
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 		return -EPROBE_DEFER;
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+	}
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 	return irq_init_cb(np, par_np);
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 }