| /* |
| * ARC FPGA Platform IRQ hookups |
| * |
| * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/interrupt.h> |
| #include <asm/irq.h> |
| |
| void __init plat_init_IRQ(void) |
| { |
| /* |
| * SMP Hack because UART IRQ hardwired to cpu0 (boot-cpu) but if the |
| * request_irq() comes from any other CPU, the low level IRQ unamsking |
| * essential for getting Interrupts won't be enabled on cpu0, locking |
| * up the UART state machine. |
| */ |
| #ifdef CONFIG_SMP |
| arch_unmask_irq(UART0_IRQ); |
| #endif |
| } |