linux-kernel - [PATCH 4.19 011/110] auxdisplay: hd44780: Fix memory leak on ->remove()

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Date:   Thu, 18 Apr 2019 19:56:00 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 011/110] auxdisplay: hd44780: Fix memory leak on ->remove()

[ Upstream commit 41c8d0adf3c4df1867d98cee4a2c4531352a33ad ]

We have to free on ->remove() the allocated resources on ->probe().

Fixes: d47d88361fee ("auxdisplay: Add HD44780 Character LCD support")
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/auxdisplay/hd44780.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/auxdisplay/hd44780.c b/drivers/auxdisplay/hd44780.c
index f1a42f0f1ded..df3da49ff9e8 100644
--- a/drivers/auxdisplay/hd44780.c
+++ b/drivers/auxdisplay/hd44780.c
@@ -299,6 +299,8 @@ static int hd44780_remove(struct platform_device *pdev)
 	struct charlcd *lcd = platform_get_drvdata(pdev);
 
 	charlcd_unregister(lcd);
+
+	kfree(lcd);
 	return 0;
 }
 
-- 
2.19.1