linux-kernel - [PATCH 4.19 241/346] libnvdimm/label: Return -ENXIO for no slot in __blk_label

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Message-Id: <20201228124931.417433128@linuxfoundation.org>
Date:   Mon, 28 Dec 2020 13:49:20 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhang Qilong <zhangqilong3@...wei.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 241/346] libnvdimm/label: Return -ENXIO for no slot in __blk_label_update

From: Zhang Qilong <zhangqilong3@...wei.com>

[ Upstream commit 4c46764733c85b82c07e9559b39da4d00a7dd659 ]

Forget to set error code when nd_label_alloc_slot failed, and we
add it to avoid overwritten error code.

Fixes: 0ba1c634892b ("libnvdimm: write blk label set")
Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Link: https://lore.kernel.org/r/20201205115056.2076523-1-zhangqilong3@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvdimm/label.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nvdimm/label.c b/drivers/nvdimm/label.c
index 9f1b7e3153f99..df9ca82f459ba 100644
--- a/drivers/nvdimm/label.c
+++ b/drivers/nvdimm/label.c
@@ -880,8 +880,10 @@ static int __blk_label_update(struct nd_region *nd_region,
 		if (is_old_resource(res, old_res_list, old_num_resources))
 			continue; /* carry-over */
 		slot = nd_label_alloc_slot(ndd);
-		if (slot == UINT_MAX)
+		if (slot == UINT_MAX) {
+			rc = -ENXIO;
 			goto abort;
+		}
 		dev_dbg(ndd->dev, "allocated: %d\n", slot);
 
 		nd_label = to_label(ndd, slot);
-- 
2.27.0