From 2273272823db6f67d57761df8116ae32e7f05bed Mon Sep 17 00:00:00 2001 From: Samuel Holland Date: Fri, 29 Apr 2022 22:00:23 -0500 Subject: riscv: Fix irq_work when SMP is disabled irq_work is triggered via an IPI, but the IPI infrastructure is not included in uniprocessor kernels. As a result, irq_work never runs. Fall back to the tick-based irq_work implementation on uniprocessor configurations. Fixes: 298447928bb1 ("riscv: Support irq_work via self IPIs") Signed-off-by: Samuel Holland Reviewed-by: Heiko Stuebner Link: https://lore.kernel.org/r/20220430030025.58405-1-samuel@sholland.org Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt --- arch/riscv/include/asm/irq_work.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/riscv') diff --git a/arch/riscv/include/asm/irq_work.h b/arch/riscv/include/asm/irq_work.h index d6c277992f76..b53891964ae0 100644 --- a/arch/riscv/include/asm/irq_work.h +++ b/arch/riscv/include/asm/irq_work.h @@ -4,7 +4,7 @@ static inline bool arch_irq_work_has_interrupt(void) { - return true; + return IS_ENABLED(CONFIG_SMP); } extern void arch_irq_work_raise(void); #endif /* _ASM_RISCV_IRQ_WORK_H */ -- cgit v1.2.3