add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/irqchip/irq-nvic.c
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@@ -1,12 +1,9 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * drivers/irq/irq-nvic.c
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  *
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  * Copyright (C) 2008 ARM Limited, All Rights Reserved.
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  * Copyright (C) 2013 Pengutronix
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  *
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  * Support for the Nested Vectored Interrupt Controller found on the
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  * ARMv7-M CPUs (Cortex-M3/M4)
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@@ -48,17 +45,6 @@
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 	handle_IRQ(irq, regs);
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 }
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-static int nvic_irq_domain_translate(struct irq_domain *d,
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-				     struct irq_fwspec *fwspec,
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-				     unsigned long *hwirq, unsigned int *type)
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-{
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-	if (WARN_ON(fwspec->param_count < 1))
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-		return -EINVAL;
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-	*hwirq = fwspec->param[0];
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-	*type = IRQ_TYPE_NONE;
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-	return 0;
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-}
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-
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 static int nvic_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
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 				unsigned int nr_irqs, void *arg)
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 {
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@@ -67,7 +53,7 @@
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 	unsigned int type = IRQ_TYPE_NONE;
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 	struct irq_fwspec *fwspec = arg;
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-	ret = nvic_irq_domain_translate(domain, fwspec, &hwirq, &type);
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+	ret = irq_domain_translate_onecell(domain, fwspec, &hwirq, &type);
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 	if (ret)
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 		return ret;
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@@ -78,7 +64,7 @@
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 }
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 static const struct irq_domain_ops nvic_irq_domain_ops = {
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-	.translate = nvic_irq_domain_translate,
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+	.translate = irq_domain_translate_onecell,
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 	.alloc = nvic_irq_domain_alloc,
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 	.free = irq_domain_free_irqs_top,
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 };
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@@ -108,6 +94,7 @@
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 	if (!nvic_irq_domain) {
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 		pr_warn("Failed to allocate irq domain\n");
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+		iounmap(nvic_base);
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 		return -ENOMEM;
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 	}
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@@ -117,6 +104,7 @@
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 	if (ret) {
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 		pr_warn("Failed to allocate irq chips\n");
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 		irq_domain_remove(nvic_irq_domain);
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+		iounmap(nvic_base);
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 		return ret;
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 	}
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