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 59ab62c..f3b3e19 100644 (file)
--- 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) {