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Mask and ack CPU interrupts upon initialization. Keep the state

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of software interrupts when unmasking.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Maciej W. Rozycki 2005-02-03 23:06:29 +00:00 committed by Ralf Baechle
parent 38b18f7258
commit 925ddb04c5
1 changed files with 6 additions and 1 deletions
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7
arch/mips/kernel/irq_cpu.c
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@ -3,6 +3,8 @@
* Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
*
* Copyright (C) 2001 Ralf Baechle
* Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
* Author: Maciej W. Rozycki <macro@mips.com>
*
* This file define the irq handler for MIPS CPU interrupts.
*
@ -37,7 +39,6 @@ static int mips_cpu_irq_base;
static inline void unmask_mips_irq(unsigned int irq)
{
clear_c0_cause(0x100 << (irq - mips_cpu_irq_base));
set_c0_status(0x100 << (irq - mips_cpu_irq_base));
}
@ -107,6 +108,10 @@ void __init mips_cpu_irq_init(int irq_base)
{
int i;
/* Mask interrupts. */
clear_c0_status(ST0_IM);
clear_c0_cause(CAUSEF_IP);
for (i = irq_base; i < irq_base + 8; i++) {
irq_desc[i].status = IRQ_DISABLED;
irq_desc[i].action = NULL;