linux-kernel - [PATCH v2 3/3] md: Fix the return value of mddev_stack_new

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Message-Id: <20250719083119.1068811-4-linan666@huaweicloud.com>
Date: Sat, 19 Jul 2025 16:31:19 +0800
From: linan666@...weicloud.com
To: song@...nel.org,
	yukuai3@...wei.com,
	martin.petersen@...cle.com,
	hare@...e.de,
	axboe@...nel.dk
Cc: linux-raid@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	bvanassche@....org,
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	filipe.c.maia@...il.com,
	linan666@...weicloud.com,
	yangerkun@...wei.com,
	yi.zhang@...wei.com
Subject: [PATCH v2 3/3] md: Fix the return value of mddev_stack_new_rdev

From: Li Nan <linan122@...wei.com>

In mddev_stack_new_rdev(), if the integrity profile check fails, it
returns -ENXIO, which means "No such device or address". This is
inaccurate and can mislead users. Change it to return -EINVAL.

Fixes: c6e56cf6b2e7 ("block: move integrity information into queue_limits")
Signed-off-by: Li Nan <linan122@...wei.com>
---
 drivers/md/md.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ad8d44493c0f..f2dfe0a72c51 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5920,7 +5920,7 @@ int mddev_stack_new_rdev(struct mddev *mddev, struct md_rdev *rdev)
 		pr_err("%s: incompatible integrity profile for %pg\n",
 		       mdname(mddev), rdev->bdev);
 		queue_limits_cancel_update(mddev->gendisk->queue);
-		return -ENXIO;
+		return -EINVAL;
 	}
 
 	return queue_limits_commit_update(mddev->gendisk->queue, &lim);
-- 
2.39.2