From: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Date: Fri, 14 Jun 2019 22:41:06 +0000 (-0700)
Subject: md: md.c: Return -ENODEV when mddev is NULL in rdev_attr_show
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=168b305b0cfb7467a6691993f922ecbdcfc00c98;p=openwrt%2Fstaging%2Fblogic.git

md: md.c: Return -ENODEV when mddev is NULL in rdev_attr_show

Commit c42d3240990814eec1e4b2b93fa0487fc4873aed
("md: return -ENODEV if rdev has no mddev assigned") changed
rdev_attr_store to return -ENODEV when rdev->mddev is NULL, now do the
same to rdev_attr_show.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 04f4f131f9d6..86f4f2b5a724 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3356,7 +3356,7 @@ rdev_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
 	if (!entry->show)
 		return -EIO;
 	if (!rdev->mddev)
-		return -EBUSY;
+		return -ENODEV;
 	return entry->show(rdev, page);
 }