linux-kernel - [PATCH] usb: gadget: aspeed: add missing of_node

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Message-ID: <alpine.DEB.2.22.394.2101211907060.14700@hadrien>
Date:   Thu, 21 Jan 2021 19:12:54 +0100 (CET)
From:   Julia Lawall <julia.lawall@...ia.fr>
To:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Tao Ren <rentao.bupt@...il.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
cc:     linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        kbuild-all@...ts.01.org,
        Sumera Priyadarsini <sylphrenadin@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] usb: gadget: aspeed: add missing of_node_put

From: kernel test robot <lkp@...el.com>

Breaking out of for_each_child_of_node requires a put on the
child value.

Generated by: scripts/coccinelle/iterators/for_each_child.cocci

Fixes: 82c2d81361ec ("coccinelle: iterators: Add for_each_child.cocci script")
CC: Sumera Priyadarsini <sylphrenadin@...il.com>
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: kernel test robot <lkp@...el.com>
Signed-off-by: Julia Lawall <julia.lawall@...ia.fr>
---

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   45dfb8a5659ad286c28fa59008271dbc4e5e3f2d
commit: 82c2d81361ecd142a54e84a9da1e287113314a4f coccinelle: iterators: Add for_each_child.cocci script
:::::: branch date: 17 hours ago
:::::: commit date: 3 months ago

Please take the patch only if it's a positive warning. Thanks!

 hub.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/usb/gadget/udc/aspeed-vhub/hub.c
+++ b/drivers/usb/gadget/udc/aspeed-vhub/hub.c
@@ -999,8 +999,10 @@ static int ast_vhub_of_parse_str_desc(st
 		str_array[offset].s = NULL;

 		ret = ast_vhub_str_alloc_add(vhub, &lang_str);
-		if (ret)
+		if (ret) {
+			of_node_put(child);
 			break;
+		}
 	}

 	return ret;