linux-kernel - [PATCH] au0828: fix unbalanced lock/unlock in au0828_usb

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Date:   Sat, 12 Aug 2017 12:30:59 -0500
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
Cc:     Julia Lawall <julia.lawall@...6.fr>, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Subject: [PATCH] au0828: fix unbalanced lock/unlock in au0828_usb_probe

Call mutex_unlock and free dev on failure.

Reported-by: Julia Lawall <julia.lawall@...6.fr>
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
---
 drivers/media/usb/au0828/au0828-core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 739df61..cd363a2 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -628,6 +628,8 @@ static int au0828_usb_probe(struct usb_interface *interface,
 	if (retval) {
 		pr_err("%s() au0282_dev_register failed to register on V4L2\n",
 			__func__);
+		mutex_unlock(&dev->lock);
+		kfree(dev);
 		goto done;
 	}
 
-- 
2.5.0