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fail_function: refactor code of checking return value of register_kprobe()

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Refactor the error handling of register_kprobe() to improve readability. 
No functional change.

Link: https://lkml.kernel.org/r/20220826073337.2085798-2-yangyingliang@huawei.com
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Yang Yingliang 2022-08-26 15:33:36 +08:00 committed by Andrew Morton
parent f81259c6db
commit cef9f5f866
1 changed files with 5 additions and 6 deletions
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11
kernel/fail_function.c
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@ -294,14 +294,13 @@ static ssize_t fei_write(struct file *file, const char __user *buffer,
}
ret = register_kprobe(&attr->kp);
if (!ret)
fei_debugfs_add_attr(attr);
if (ret < 0)
if (ret) {
fei_attr_remove(attr);
else {
list_add_tail(&attr->list, &fei_attr_list);
ret = count;
goto out;
}
fei_debugfs_add_attr(attr);
list_add_tail(&attr->list, &fei_attr_list);
ret = count;
out:
mutex_unlock(&fei_lock);
kfree(buf);