linux-kernel - [PATCH] fsi: Aspeed: Fix a resource leak in fsi_master_aspeed

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Date:   Sat, 26 Nov 2022 10:44:02 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Jeremy Kerr <jk@...abs.org>, Joel Stanley <joel@....id.au>,
        Alistar Popple <alistair@...ple.id.au>,
        Eddie James <eajames@...ux.ibm.com>,
        Andrew Jeffery <andrew@...id.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-fsi@...ts.ozlabs.org, linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org
Subject: [PATCH] fsi: Aspeed: Fix a resource leak in fsi_master_aspeed_remove()

An explicit get_device() call in fsi_master_aspeed_probe() is not balanced
by a corresponding put_device() in the .remove() function.

Add it, otherwise some resource may never be released.

Fixes: 606397d67f41 ("fsi: Add ast2600 master driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
This patch is speculative and untested.
---
 drivers/fsi/fsi-master-aspeed.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/fsi/fsi-master-aspeed.c b/drivers/fsi/fsi-master-aspeed.c
index 7cec1772820d..b66d9853117b 100644
--- a/drivers/fsi/fsi-master-aspeed.c
+++ b/drivers/fsi/fsi-master-aspeed.c
@@ -651,6 +651,8 @@ static int fsi_master_aspeed_remove(struct platform_device *pdev)
 	fsi_master_unregister(&aspeed->master);
 	clk_disable_unprepare(aspeed->clk);
 
+	put_device(&aspeed->master.dev);
+
 	return 0;
 }
 
-- 
2.34.1