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ac8fd122e0
request_irq() is preferred over setup_irq(). Invocations of setup_irq() occur after memory allocators are ready. Per tglx[1], setup_irq() existed in olden days when allocators were not ready by the time early interrupts were initialized. Hence replace setup_irq() by request_irq(). remove_irq() has been replaced by free_irq() as well. There were build error's during previous version, couple of which was reported by kbuild test robot <lkp@intel.com> of which one was reported by Thomas Bogendoerfer <tsbogend@alpha.franken.de> as well. There were a few more issues including build errors, those also have been fixed. [1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc.
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* Copyright (C) 2001 Ralf Baechle
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* Copyright (C) 2010 PMC-Sierra, Inc.
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*
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* VSMP support for MSP platforms . Derived from malta vsmp support.
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*/
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#include <linux/smp.h>
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#include <linux/interrupt.h>
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#include <asm/setup.h>
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#ifdef CONFIG_MIPS_MT_SMP
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#define MIPS_CPU_IPI_RESCHED_IRQ 0 /* SW int 0 for resched */
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#define MIPS_CPU_IPI_CALL_IRQ 1 /* SW int 1 for call */
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static void ipi_resched_dispatch(void)
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{
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do_IRQ(MIPS_CPU_IPI_RESCHED_IRQ);
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}
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static void ipi_call_dispatch(void)
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{
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do_IRQ(MIPS_CPU_IPI_CALL_IRQ);
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}
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static irqreturn_t ipi_resched_interrupt(int irq, void *dev_id)
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{
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return IRQ_HANDLED;
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}
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static irqreturn_t ipi_call_interrupt(int irq, void *dev_id)
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{
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generic_smp_call_function_interrupt();
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return IRQ_HANDLED;
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}
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void __init arch_init_ipiirq(int irq, const char *name, irq_handler_t handler)
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{
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if (request_irq(irq, handler, IRQF_PERCPU, name, NULL))
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pr_err("Failed to request irq %d (%s)\n", irq, name);
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irq_set_handler(irq, handle_percpu_irq);
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}
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void __init msp_vsmp_int_init(void)
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{
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set_vi_handler(MIPS_CPU_IPI_RESCHED_IRQ, ipi_resched_dispatch);
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set_vi_handler(MIPS_CPU_IPI_CALL_IRQ, ipi_call_dispatch);
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arch_init_ipiirq(MIPS_CPU_IPI_RESCHED_IRQ, "IPI_resched",
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ipi_resched_interrupt);
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arch_init_ipiirq(MIPS_CPU_IPI_CALL_IRQ, "IPI_call", ipi_call_interrupt);
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}
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#endif /* CONFIG_MIPS_MT_SMP */
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