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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/soc/rockchip/fiq_debugger/rk_fiq_debugger.c
..
..
@@ -763,6 +763,11 @@
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 	if ((sip_fiq_debugger_is_enabled()) &&
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 	    (sip_fiq_debugger_get_target_cpu() == cpu)) {
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 		target_cpu = cpumask_any_but(cpu_online_mask, cpu);
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+		if (target_cpu >= nr_cpu_ids) {
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+			pr_err("%s: migrate fiq fail!\n", __func__);
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+			return -EBUSY;
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+		}
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+
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 		sip_fiq_debugger_switch_cpu(target_cpu);
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 	}
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