linux-kernel - [PATCH] misc: ti-st: Fix memory leak in the error path of probe()

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Date:   Fri, 27 Jul 2018 18:45:36 +0300
From:   Anton Vasilyev <vasilyev@...ras.ru>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     Anton Vasilyev <vasilyev@...ras.ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arvind Yadav <arvind.yadav.cs@...il.com>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] misc: ti-st: Fix memory leak in the error path of probe()

Free resources instead of direct return of the error code if kim_probe
fails.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@...ras.ru>
---
 drivers/misc/ti-st/st_kim.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
index 5ec3f5a43718..14a5e9da32bd 100644
--- a/drivers/misc/ti-st/st_kim.c
+++ b/drivers/misc/ti-st/st_kim.c
@@ -756,14 +756,14 @@ static int kim_probe(struct platform_device *pdev)
 	err = gpio_request(kim_gdata->nshutdown, "kim");
 	if (unlikely(err)) {
 		pr_err(" gpio %d request failed ", kim_gdata->nshutdown);
-		return err;
+		goto err_sysfs_group;
 	}
 
 	/* Configure nShutdown GPIO as output=0 */
 	err = gpio_direction_output(kim_gdata->nshutdown, 0);
 	if (unlikely(err)) {
 		pr_err(" unable to configure gpio %d", kim_gdata->nshutdown);
-		return err;
+		goto err_sysfs_group;
 	}
 	/* get reference of pdev for request_firmware
 	 */
-- 
2.18.0