linux-kernel - [PATCH] mmc: mmc_test: fix missing assignment of 'file' when register debugfs file

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Date:   Wed, 23 Nov 2022 17:55:06 +0800
From:   Ye Bin <yebin@...weicloud.com>
To:     ulf.hansson@...aro.org, wsa+renesas@...g-engineering.com,
        kvalo@...nel.org, adrian.hunter@...el.com,
        linux-mmc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, yebin10@...wei.com
Subject: [PATCH] mmc: mmc_test: fix missing assignment of 'file' when register debugfs file

From: Ye Bin <yebin10@...wei.com>

Now, 'file' is always NULL. obviously, 'file' is used to store return value of
'debugfs_create_file()'.

Fixes: a04c50aaa916 ("mmc: core: no need to check return value of debugfs_create functions")
Signed-off-by: Ye Bin <yebin10@...wei.com>
---
 drivers/mmc/core/mmc_test.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/core/mmc_test.c b/drivers/mmc/core/mmc_test.c
index 6cd6f8a94a71..156d34b2ed4d 100644
--- a/drivers/mmc/core/mmc_test.c
+++ b/drivers/mmc/core/mmc_test.c
@@ -3174,7 +3174,8 @@ static int __mmc_test_register_dbgfs_file(struct mmc_card *card,
 	struct mmc_test_dbgfs_file *df;
 
 	if (card->debugfs_root)
-		debugfs_create_file(name, mode, card->debugfs_root, card, fops);
+		file = debugfs_create_file(name, mode, card->debugfs_root,
+					   card, fops);
 
 	df = kmalloc(sizeof(*df), GFP_KERNEL);
 	if (!df) {
-- 
2.31.1