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-rw-r--r--kernel/stop_machine.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 0e688c6a1a6..8aff79d90dd 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -66,6 +66,7 @@ static void stop_cpu(struct work_struct *unused)
enum stopmachine_state curstate = STOPMACHINE_NONE;
struct stop_machine_data *smdata = &idle;
int cpu = smp_processor_id();
+ int err;
if (!active_cpus) {
if (cpu == first_cpu(cpu_online_map))
@@ -86,9 +87,11 @@ static void stop_cpu(struct work_struct *unused)
hard_irq_disable();
break;
case STOPMACHINE_RUN:
- /* |= allows error detection if functions on
- * multiple CPUs. */
- smdata->fnret |= smdata->fn(smdata->data);
+ /* On multiple CPUs only a single error code
+ * is needed to tell that something failed. */
+ err = smdata->fn(smdata->data);
+ if (err)
+ smdata->fnret = err;
break;
default:
break;