linux-kernel - [PATCH -next] usb: gadget: hid: fix error return code

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Message-ID: <20210617065625.1206872-1-yangyingliang@huawei.com>
Date:   Thu, 17 Jun 2021 14:56:25 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
CC:     <balbi@...nel.org>, <gregkh@...uxfoundation.org>
Subject: [PATCH -next] usb: gadget: hid: fix error return code

Fix to return a negative error code from the error handling
case instead of 0.

Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 drivers/usb/gadget/legacy/hid.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/legacy/hid.c b/drivers/usb/gadget/legacy/hid.c
index c4eda7fe7ab4..3912cc805f3a 100644
--- a/drivers/usb/gadget/legacy/hid.c
+++ b/drivers/usb/gadget/legacy/hid.c
@@ -99,8 +99,10 @@ static int do_config(struct usb_configuration *c)
 
 	list_for_each_entry(e, &hidg_func_list, node) {
 		e->f = usb_get_function(e->fi);
-		if (IS_ERR(e->f))
+		if (IS_ERR(e->f)) {
+			status = PTR_ERR(e->f);
 			goto put;
+		}
 		status = usb_add_function(c, e->f);
 		if (status < 0) {
 			usb_put_function(e->f);
@@ -171,8 +173,10 @@ static int hid_bind(struct usb_composite_dev *cdev)
 		struct usb_descriptor_header *usb_desc;
 
 		usb_desc = usb_otg_descriptor_alloc(gadget);
-		if (!usb_desc)
+		if (!usb_desc) {
+			status = -ENOMEM;
 			goto put;
+		}
 		usb_otg_descriptor_init(gadget, usb_desc);
 		otg_desc[0] = usb_desc;
 		otg_desc[1] = NULL;
-- 
2.25.1