diff options
| -rw-r--r-- | kernel/trace/trace_events.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c index 1545cc8b49d0..f4eff49faef6 100644 --- a/kernel/trace/trace_events.c +++ b/kernel/trace/trace_events.c @@ -1549,18 +1549,18 @@ event_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, switch (val) { case 0: case 1: - ret = -ENODEV; mutex_lock(&event_mutex); file = event_file_file(filp); if (likely(file)) { ret = tracing_update_buffers(file->tr); - if (ret < 0) { - mutex_unlock(&event_mutex); - return ret; - } - ret = ftrace_event_enable_disable(file, val); + if (ret >= 0) + ret = ftrace_event_enable_disable(file, val); + } else { + ret = -ENODEV; } mutex_unlock(&event_mutex); + if (ret < 0) + return ret; break; default: @@ -1569,7 +1569,7 @@ event_enable_write(struct file *filp, const char __user *ubuf, size_t cnt, *ppos += cnt; - return ret ? ret : cnt; + return cnt; } static ssize_t |