/* * 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 #include void __init plat_fpga_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 }