mk-rootfs.sh

hc

2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376

 kernel/drivers/irqchip/irqchip.c
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@@ -10,8 +10,10 @@
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 #include <linux/acpi.h>
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 #include <linux/init.h>
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+#include <linux/of_device.h>
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 #include <linux/of_irq.h>
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 #include <linux/irqchip.h>
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+#include <linux/platform_device.h>
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 /*
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  * This special of_device_id is the sentinel at the end of the
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@@ -20,7 +22,7 @@
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  * special section.
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  */
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 static const struct of_device_id
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-irqchip_of_match_end __used __section(__irqchip_of_table_end);
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+irqchip_of_match_end __used __section("__irqchip_of_table_end");
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 extern struct of_device_id __irqchip_of_table[];
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@@ -29,3 +31,30 @@
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 	of_irq_init(__irqchip_of_table);
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 	acpi_probe_device_table(irqchip);
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 }
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+
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+int platform_irqchip_probe(struct platform_device *pdev)
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+{
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+	struct device_node *np = pdev->dev.of_node;
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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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+
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+	if (!irq_init_cb)
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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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+
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+	/*
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+	 * If there's a parent interrupt controller and  none of the parent irq
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+	 * domains have been registered, that means the parent interrupt
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+	 * controller has not been initialized yet.  it's not time for this
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+	 * interrupt controller to initialize. So, defer probe of this
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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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+		return -EPROBE_DEFER;
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+
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+	return irq_init_cb(np, par_np);
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+}
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+EXPORT_SYMBOL_GPL(platform_irqchip_probe);