From 8cfed66d7fe4bb3aca7338d1f49f5b65721a311a Mon Sep 17 00:00:00 2001 From: XiaoDong Huang Date: Mon, 13 Nov 2023 16:18:33 +0800 Subject: [PATCH] soc: rockchip: fiq debugger: check "target_cpu" before switch cpu Signed-off-by: XiaoDong Huang Change-Id: I2ed0fb4c5aa60b735a7570e13dffd2ee8e646f3b --- drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c b/drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c index 1fb72a5601ea..6dafdde7b6b0 100644 --- a/drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c +++ b/drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c @@ -763,6 +763,11 @@ static int fiq_debugger_cpu_offine_migrate_fiq(unsigned int cpu) if ((sip_fiq_debugger_is_enabled()) && (sip_fiq_debugger_get_target_cpu() == cpu)) { target_cpu = cpumask_any_but(cpu_online_mask, cpu); + if (target_cpu >= nr_cpu_ids) { + pr_err("%s: migrate fiq fail!\n", __func__); + return -EBUSY; + } + sip_fiq_debugger_switch_cpu(target_cpu); }