linux-kernel - [PATCH AUTOSEL 4.14 08/37] auxdisplay: hd44780: Fix memory leak on ->remove()

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Date:   Fri, 29 Mar 2019 20:54:09 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.14 08/37] auxdisplay: hd44780: Fix memory leak on ->remove()

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

[ 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 036eec404289..2d927feb3db4 100644
--- a/drivers/auxdisplay/hd44780.c
+++ b/drivers/auxdisplay/hd44780.c
@@ -302,6 +302,8 @@ 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