change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/irqchip/irq-bcm2835.c
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@@ -1,16 +1,7 @@
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+// SPDX-License-Identifier: GPL-2.0+
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 /*
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  * Copyright 2010 Broadcom
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  * Copyright 2012 Simon Arlott, Chris Boot, Stephen Warren
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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 as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  *
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  * Quirk 1: Shortcut interrupts don't set the bank 1/2 register pending bits
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  *
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@@ -70,6 +61,7 @@
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 					| SHORTCUT1_MASK | SHORTCUT2_MASK)
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 #define REG_FIQ_CONTROL		0x0c
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+#define FIQ_CONTROL_ENABLE	BIT(7)
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 #define NR_BANKS		3
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 #define IRQS_PER_BANK		32
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@@ -144,6 +136,7 @@
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 {
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 	void __iomem *base;
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 	int irq, b, i;
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+	u32 reg;
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 	base = of_iomap(node, 0);
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 	if (!base)
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@@ -166,6 +159,19 @@
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 				handle_level_irq);
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 			irq_set_probe(irq);
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 		}
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+
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+		reg = readl_relaxed(intc.enable[b]);
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+		if (reg) {
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+			writel_relaxed(reg, intc.disable[b]);
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+			pr_err(FW_BUG "Bootloader left irq enabled: "
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+			       "bank %d irq %*pbl\n", b, IRQS_PER_BANK, &reg);
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+		}
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+	}
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+
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+	reg = readl_relaxed(base + REG_FIQ_CONTROL);
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+	if (reg & FIQ_CONTROL_ENABLE) {
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+		writel_relaxed(0, base + REG_FIQ_CONTROL);
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+		pr_err(FW_BUG "Bootloader left fiq enabled\n");
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 	}
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 	if (is_2836) {