From: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Date: Thu, 6 Nov 2014 10:11:56 +0000 (+0100)
Subject: usb: gadget: f_hid: check return value of class_create
X-Git-Tag: v3.19-rc1~80^2~32^2~84
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=06529407329841ed836b30e4a99905a522ffa323;p=linux.git

usb: gadget: f_hid: check return value of class_create

class_create() might fail, so check its return value and react
appropriately.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index 59ab62c92b66..f3b3e19281ea 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -742,6 +742,10 @@ int __init ghid_setup(struct usb_gadget *g, int count)
 	dev_t dev;
 
 	hidg_class = class_create(THIS_MODULE, "hidg");
+	if (IS_ERR(hidg_class)) {
+		hidg_class = NULL;
+		return PTR_ERR(hidg_class);
+	}
 
 	status = alloc_chrdev_region(&dev, 0, count, "hidg");
 	if (!status) {