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-rw-r--r--kernel/stop_machine.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 0ec1f16da379..68b73c400408 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -128,9 +128,11 @@ int stop_one_cpu(unsigned int cpu, cpu_stop_fn_t fn, void *arg)
struct cpu_stop_work work = { .fn = fn, .arg = arg, .done = &done };
cpu_stop_init_done(&done, 1);
- cpu_stop_queue_work(cpu, &work);
+ if (!cpu_stop_queue_work(cpu, &work))
+ return -ENOENT;
wait_for_completion(&done.completion);
- return done.executed ? done.ret : -ENOENT;
+ WARN_ON(!done.executed);
+ return done.ret;
}
/* This controls the threads on each CPU. */